WO2011085656A1 - Ether-based fuel - Google Patents

Abstract

A clean ether-based fuel comprises dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol. The ether-based fuel can replace gasoline in automobiles or other vehicles or power equipments having gasoline engines. A mixed fuel comprising the ether-based fuel and gasoline is also provided.

Description

 Ether-based fuel technology

 The present invention relates to a novel clean fuel, and more particularly to a clean ether based fuel. The ether-based fuel comprises dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol. More specifically, the ether-based fuel may consist of only dioxane, methanol and 2,6-di-tert-butyl-p-nonylphenol. The invention further relates to an ether-based fuel comprising diterpene ether, methanol and 2,6-di-tert-butyl-p-cresol, and at least one additive selected from the group consisting of water, castor oil and succinimide. The invention further relates to a mixed fuel comprising an ether-based fuel of the invention and gasoline. Background technique

 As a well-known, oil, as a non-renewable resource, plays an indispensable role in the social life and national defense construction of a country. With the continuous improvement of the living standards of our people, cars have gradually entered the families of ordinary people. For example, Beijing has now entered the era of 4 million cars. Therefore, as the number of cars is increasing, the need for gasoline is also increasing. China's crude oil production is far from meeting the needs of the domestic economy. Today, China has become a net importer of crude oil from crude oil exporting countries, and most of China's crude oil is dependent on imports. The intensification of this situation will seriously restrict the further development of China's economy and even affect China's national defense security. Therefore, it is necessary to find a vehicle fuel that does not require the use of petroleum raw materials, and thus does not require the import of petroleum from abroad.

 In addition, with the popularization of automobiles, a large amount of exhaust gas is discharged into the atmosphere, which makes the car bring convenience to people, and also brings various diseases, especially respiratory diseases. In recent years, automobile exhaust emissions have become the focus of attention. In order to reduce various problems caused by automobile exhaust emissions, countries around the world have imposed strict requirements on automobile exhaust, including relevant requirements in the United States, Europe has Euro IV standards, Japan has implemented the most stringent standards, and China is implementing it. Effective for Euro III or Euro IV standards. Moreover, the requirements for exhaust emissions in various countries will become more stringent. For example, the United States has agreed that states have separately set stricter emission standards than US national standards. On the eve of the Olympic Games, Beijing implemented the National IV standard in advance and will implement the National V standard as soon as possible. Therefore, there is a need for a clean fuel that can replace the currently used motor gasoline, which is more clean and environmentally friendly while meeting the functions of the motor gasoline.

Benzene is a recognized carcinogen. It is directly affected by the evaporation and combustion of gasoline and the release of exhaust gas into the atmosphere. Therefore, the EU, UK, Australia and Russia gasoline standards all limit this indicator, generally specified as not more than 5% (v/v) „ Beijing local standard Precisely, the content of benzene is required to be not more than 1.0% by volume. However, as environmental requirements, governments and relevant agencies may also impose more stringent restrictions.

An aromatic hydrocarbon is a gasoline blending agent with a high octane number and a high calorific value. However, it burns to cause the formation of carcinogenic benzene, and it tends to increase the carbon deposits in the combustion chamber and increase the CO ₂ emissions. It is generally believed that the greater the content of benzene and other aromatic hydrocarbons in gasoline, the greater the benzene content of the combustion products. Therefore, reducing the aromatics content in gasoline is bound to benefit the environment by reducing benzene emissions from the tail gas.

 China is a large coal producing country with abundant coal reserves. Converting rich coal resources into fuel oil has always been a research direction. The conversion of coal into sterols is also an important direction for coal utilization. Shaanxi New Fuel Gas Company and other units have developed ether-based gasoline additives, which contain 5 - 37 % dimethyl ether, 10 - 60 % low-carbon alcohol compounds, and 10 - 50% C5-10 hydrocarbons. Compound (e.g., benzene), 0.1 - 5% alkylphenol to polyoxyethylene ether and 0.05 - 0.5% alkylphenol. The additive is mixed with gasoline to produce an ether-based compound gasoline. Chinese invention patent application CN98112948.X also discloses an ether-based gasoline additive consisting of the following components: 15.5% dimethyl ether, 42% methanol, 39% benzene, 3.3% alkylphenol ethoxylate and 0.2% 2,6-di-tert-butyl-p-cresol. Affected by this, the annual production of dimethyl ether in China can now reach several million tons. However, the above two ether-based gasoline additives have high production costs and contain a large amount of benzene, so that the gasoline added with these two acid-based gasoline additives will not meet the requirements of the current gasoline standard for the benzene content. Moreover, it is believed that the addition of benzene to gasoline will inevitably lead to a sharp rise in the benzene content of the gasoline combustion products, thereby causing damage to the environment and the human body. Nowadays, many DME producers are in a limited production or stop production due to product sales problems, waiting for a difficult situation.

 Therefore, if you can use dimethylhydrazine to produce clean fuel without using carcinogenic benzene, you should not only worry about the source of raw materials, but also solve the current problems of these manufacturers.

 Although the standard of methanol gasoline has been promulgated, due to the material properties of methanol, there are still some problems in sterol gasoline: First, the volatility of sterols relative to gasoline components is poor, resulting in difficulty in cold start of engines using sterol gasoline, burning Adequate; second, the miscibility of decyl alcohol and gasoline is poor, the shelf life is short, and it is easy to metamorphose and stratify; the third is that the substitution ratio is low (that is, about 1.6-1.7 parts of sterol need to be used instead of 1 part of gasoline); Fourth, if the engine structure is not changed Methanol gasoline is not fully burned in existing engines, and its power is insufficient. Summary of the invention

 In a first aspect of the invention, the invention relates to an ether-based fuel comprising dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol.

In a preferred embodiment of the first aspect, the ether-based fuel has a dimethyl ether content of 4 to 12 parts by weight and a methanol content of 88 to 96 parts by weight based on 100 parts by weight of dioxane and methanol. ,6- The content of di-tert-butyl-p-cresol is 0.005 to 0.5 parts by weight. Further preferably, the content of dimethyl ether is 5 to 9 parts by weight, the content of methanol is 91 to 95 parts by weight based on 100 parts by weight of dioxane and methanol, and 2,6-di-tert-butyl group in the ether-based fuel The content of p-cresol is from 0.01 to 0.1 part by weight.

 In one embodiment of the first aspect, the acid-based fuel consists of dimethyl ether, methanol, and 2,6-di-tert-butyl-p-cresol.

 In one embodiment of the first aspect, the acid-based fuel of the present invention is an automotive fuel.

 In one embodiment of the first aspect, the ether-based fuel of the present invention is a gasoline engine fuel.

 A second aspect of the invention also relates to an ether-based fuel comprising dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol; the acid-based fuel further comprising at least one selected from the group consisting of water and castor oil And additives in succinimide.

 In a preferred embodiment of the second aspect of the present invention, the dimethyl ether is contained in an amount of 4 to 12 parts by weight based on 100 parts by weight of dimethyl ether and methanol, and the content of methanol is 88 to 96 parts by weight, 2 The content of 6-di-tert-butyl-p-cresol is 0.005-0.5 parts by weight. Further preferably, the acid-based fuel is contained in an amount of 5 to 9 parts by weight based on 100 parts by weight of dimethyl ether and methanol, and the content of methanol is 91 to 95 parts by weight, 2,6-di-tert-butyl group. The content of p-cresol is from 0.01 to 0.1 part by weight.

 In an embodiment of the second aspect of the present invention, the additive is water, castor oil, succinimide, a combination of water and castor oil, a combination of water and succinimide, castor oil and dibutyl A combination of imides, or a combination of water, castor oil, and succinimide. When the ether-based fuel contains water, the water content is 5.3-16.3 parts by weight, preferably 6.4 to 14 parts by weight, more preferably 6.4 to 11.1 parts by weight; when the base fuel contains castor oil, castor oil The content is 0.5-2 parts by weight, preferably 0.7 to 1.5 parts by weight; when the acid-based fuel contains succinimide, the content of succinimide is 0.005-0.02 parts by weight, preferably 0.008-0.012 by weight. The parts by weight are all based on 100 parts by weight of dimethyl ether and methanol.

 In an embodiment of the second aspect of the present invention, the ether-based fuel comprises: 5 to 9 parts by weight of dioxanyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-union Butyl p-cresol, 0.005-0.02 parts by weight of succinimide and 0.7-1.5 parts by weight of castor oil; the parts by weight are based on 100 parts by weight of dioxane and methanol. The ether-based fuel in this embodiment may further contain water, wherein the content of water is from 5.3-16.3 parts by weight, preferably from 6.4 to 14 parts by weight, more preferably from 6.4 to 11.1 parts by weight, based on 100 parts by weight of dimethyl ether. And sterols.

 In another embodiment of the second aspect of the present invention, the acid-based fuel is composed of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and at least one selected from the group consisting of water, castor oil, and succinyl The composition of the additives in the imine.

In still another embodiment of the second aspect of the present invention, the acid-based fuel is composed of the following components: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl-p-cresol, 0.005-0.02 parts by weight of succinimide and 0.7 to 1.5 parts by weight of castor oil; the parts by weight are based on 100 parts by weight of dimethyl ether and methanol.

 In still another embodiment of the second aspect of the present invention, the ether-based fuel is composed of the following components: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2, 6-di-tert-butyl-p-cresol, 0.005-0.02 parts by weight of succinimide, 0.7-1.5 parts by weight of castor oil and 5-14 parts by weight of water; the parts by weight are based on 100 parts by weight of dimethyl Ether and methanol.

 In a third aspect of the invention, the invention relates to a mixed fuel comprising the ether-based fuel of the first or second aspect of the invention and gasoline, in which case the ether-based fuel of the invention does not contain water.

 In a preferred embodiment of the third aspect of the invention, the ether-based fuel is present in an amount of from 1 to 99% by weight based on the total weight of the mixed fuel. Further, the ether-based fuel is contained in an amount of 10 - 90% by weight based on the total weight of the mixed fuel.

 In a preferred embodiment of the third aspect of the present invention, the gasoline is No. 90, No. 93, No. 97, No. 100 or No. 103 gasoline (of which No. 100 and No. 103 gasoline have not been commercially produced in China).

 In a preferred embodiment of the third aspect of the invention, the gasoline is sterol gasoline or ethanol gasoline.

 In an embodiment of the third aspect, the mixed fuel of the present invention is composed of the ether-based fuel of the first aspect or the second aspect of the invention and gasoline, and in this case, the ether-based fuel of the present invention does not contain water. Accordingly, the present invention includes the following embodiments:

 Embodiment 1. An acid-based fuel comprising dimethyl ether, methanol and 2,6-di-tert-butyl-p-nonylphenol.

 2. The ether-based fuel of embodiment 1, wherein the diterpene ether is contained in an amount of from 4 to 12 parts by weight, based on 100 parts by weight of the dimethyl ether and methanol, and the methanol content is from 88 to 96 parts by weight, 2,6-di-tert The butyl pair is expected to be present in an amount of from 0.005 to 0.5 parts by weight.

 3. The ether-based fuel of Embodiment 1, wherein the diterpene ether is contained in an amount of 5 - 9 parts by weight, the methanol content is 91 - 95 parts by weight, based on 100 parts by weight of the dimethyl ether and methanol, and the 2,6-di unter The content of butyl p-cresol is from 0.01 to 0.1 part by weight.

 4. The ether-based fuel of any of embodiments 1 - 3, wherein the ether-based fuel consists of dimethyl ether, decyl alcohol, and 2,6-di-tert-butyl-p-nonylphenol.

 5. The ether-based fuel of any of embodiments 1 - 4, wherein the acid-based fuel is an automotive fuel.

 6. The acid-based fuel of any of embodiments 1 - 5, wherein the boat-based fuel is a gasoline engine fuel.

An acid-based fuel comprising dimethyl ether, decyl alcohol and 2,6-di-tert-butyl-p-cresol; The fuel also contains at least one additive selected from the group consisting of water, castor oil, and succinimide.

 8. The ether-based fuel of embodiment 7, wherein the diterpene ether is contained in an amount of from 4 to 12 parts by weight based on 100 parts by weight of the dimethyl ether and methanol, and the methanol content is from 88 to 96 parts by weight, 2,6-di-tert The content of butyl p-cresol is 0.005 to 0.5 parts by weight.

 9. The acid-based fuel of embodiment 8, wherein the content of dimethyl ether is 5 - 9 parts by weight, and the content of decyl alcohol is 91 - 95 parts by weight, based on 100 parts by weight of dimethyl ether and methanol, 2,6-di The content of tert-butyl-p-phenol is 0.01 to 0.1 part by weight.

 The ether-based fuel of any one of embodiments 7-9, wherein the additive is water, castor oil, succinimide, a combination of water and castor oil, a combination of water and succinimide, 蓖A combination of sesame oil and succinimide, or a combination of water, castor oil and succinimide.

 11. The ether-based fuel of any of embodiments 7-10, wherein when the ether-based fuel contains water, the water content is from 5.3 to 16.3 parts by weight, preferably from 6.4 to 14 parts by weight, more preferably from 6.4 to 11.1 parts by weight; when the ether-based fuel contains castor oil, the content of castor oil is 0.5-2 parts by weight, preferably 0.7 to 1.5 parts by weight; when the acid-based fuel contains succinimide, The content of the imide is from 0.005 to 0.02 parts by weight, preferably from 0.008 to 0.012 parts by weight; the parts by weight are each based on 100 parts by weight of dimethyl ether and methanol.

 12. The ether-based fuel of any one of embodiments 7-11, wherein the acid-based fuel is from dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and at least one selected from the group consisting of water, castor oil, and Additive composition in succinimide.

 A mixed fuel comprising the acid-based fuel of any of embodiments 1 to 12 and gasoline, wherein the ether-based fuel does not contain water.

 14. The mixed fuel of embodiment 13, wherein the ether-based fuel is present in an amount of from 1 to 99% by weight of the mixed fuel.

 15. The mixed fuel of embodiment 13 or 14, wherein the acid-based fuel is present in an amount of from 10 to 90% by weight of the mixed fuel.

 16. The blended fuel of any one of clauses 13 to 15, wherein the gasoline is gasoline No. 90, No. 93, No. 97, No. 100 or No. 103.

 17. The blended fuel of any of embodiments 13-16, wherein the gasoline is methanol gasoline or ethanol gasoline.

18. The blended fuel of any of embodiments 13-17, which consists of the acid-based fuel of any of embodiments 1-12 and gasoline. detailed description The inventors of the present invention have undergone extensive testing and screening, and it has unexpectedly been found that a novel fuel comprising dioxane, methanol and 2,6-di-tert-butyl-p-cresol can be used to solve or partially overcome the above problems in the art. .

 First aspect of the invention

 A first aspect of the invention relates to a novel acid-based fuel which is a dimethyl ether based fuel. Specifically, the novel fuel comprises dimethyl ether, methanol, and 2,6-di-tert-butyl-p-cresol.

 The novel acid-based fuel of the present invention does not use petroleum resources, and can completely replace petroleum-derived gasoline as a fuel for the automobile industry. Heretofore, it has been unexpectedly expected from the prior art that a composition comprising dimethyl ether, decyl alcohol and 2,6-di-tert-butyl-p-cresol as a main component can be used as a fuel, particularly as a fuel for vehicles. Instead of gasoline. It is impossible to predict from the prior art that an ether-based fuel composed of diterpene ether, decyl alcohol and 2,6-di-tert-butyl-methyl face can completely replace the fuel used for automobile fuel or other vehicles or power equipment. .

 Gasoline is usually a mixture of C4-C10 alkanes and contains substances such as benzene and toluene.

 In this article, "gasoline" includes regular gasoline, methanol gasoline and ethanol gasoline.

 The acid-based fuel of the present invention does not contain a main component of gasoline, i.e., the acid-based fuel of the present invention does not contain a hydrocarbon of C4 or higher, such as a C4-C10 alkane, benzene or the like. As used herein, "does not contain hydrocarbons above C4" means that no hydrocarbons above C4 are intentionally added.

 The components are described in detail below.

 Dimethyl ether is a colorless, odorless and non-toxic compound. Dimethyl ether is a gas at normal temperature and pressure. Its molecular weight is 46, oxygen content is 35, air-fuel ratio is 9, air-fuel mixture is higher than diesel (3067/2911), cetane number is 60 (5-12 units higher than diesel), exhaust emissions Medium CO and HC are 55% and 86% lower than gasoline, respectively. Therefore, dimethyl ether burns more completely than gasoline, and combustion products are more environmentally friendly than gasoline. The diterpene ether has good combustion and mechanical properties and strong explosive power, and these properties are superior to methyl tert-butyl ether.

 The molecular weight of sterol is 32, the oxygen content is 50%, the air-fuel ratio is 6.4 (gasoline is 14.8), the octane number is 112 (15 - 22 units higher than gasoline), and the air-fuel mixture is slightly lower than gasoline. ( 2656/2786 ), pollutant emissions are better than gasoline. Methanol has a wide range of sources and can be directly prepared from coal at a lower cost.

The molecular weight of 2,6-di-tert-butyl-p-phenol (CAS No. 128-37-0, molecular formula C ₁₅ H ₂₄ 〇) is 220, and its structural formula is as follows: 2,6-di-tert-butyl-p-phenol is white crystal, which turns yellow when it is light, and gradually becomes darker. It is soluble in benzene, toluene, methanol, methyl ethyl ketone, ethanol, isopropanol, petroleum ether, linseed oil, and insoluble in water.

 Both the diterpene ether and the decyl alcohol used in the present invention can be derived from coal-based polygeneration, that is, recycled materials used in the recycling of fertilizer plants, which are widely available and low in cost. 2,6-di-tert-butyl-p-cresol is commercially available.

 The inventors of the present invention have, after extensive research work, unexpectedly discovered that the ether-based fuel of the present invention containing a specific ratio of dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol does not contain gasoline. The main component, particularly a hydrocarbon of C4 or higher, such as benzene, can be used as an automobile fuel, and has a remarkably low colloid content and a significantly long shelf life and induction period. Further, since the ether-based fuel of the present invention can be directly used as an automobile fuel without containing a hydrocarbon such as benzene or the like, such as benzene, it is possible to satisfactorily meet environmental protection requirements.

 The base fuel of the present invention mainly comprises dimethyl ether, decyl alcohol and 2,6-di-tert-butyl-p-cresol. In general, in the acid-based fuel of the present invention, the content of dimethyl ether may be 4 to 12 parts by weight (preferably 5 to 9 parts by weight), and the content of decyl alcohol may be 88 to 96 parts by weight (preferably 91). The content of 2,6-di-tert-butyl-p-cresol is from 0.005 to 0.5 part by weight (preferably from 0.01 to 0.1 part by weight), wherein the total weight of dimethyl ether and methanol is 100 parts by weight.

 When the content of dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol is within the above range, the ether-based fuel of the present invention has a good effect.

 The ether-based fuel of the present invention, in addition to having a significantly low colloidal content as described above and a significantly long shelf life and induction period, also has the advantages of high clean combustion of dimethyl ether (and thus high clean emissions) and methanol. The advantages of high octane number, therefore, the acid-based fuel can have the advantages of high octane number, sufficient combustion, low emission pollution, easy availability of raw materials and low cost. The acid-based fuel of the present invention can meet the requirements of the automobile industry for gasoline, thereby replacing the conventional gasoline as a fuel for automobiles.

 More particularly, the ether-based fuels of the present invention are also self-cleaning. Without wishing to be bound by a particular theory, the inventors of the present invention believe that due to the good solubility of methanol, it is possible to effectively prevent carbon deposits from forming in spark plugs, combustion chambers, valves, exhaust mufflers, etc., to prevent oil passage blockage and to avoid Self-cleaning occurs due to failure caused by carbon deposits and clogging. Surprisingly, the ether-based fuel of the present invention can accomplish this self-cleaning function without the addition of any additives.

 Therefore, the ether-based fuel of the present invention can achieve clean combustion, clean emissions, and protection of the vehicle.

The effect of adjusting the octane number can be achieved by adjusting the content of dimethyl ether and methanol in the acid-based fuel. In general, as the methanol content decreases, the octane number of the ether-based fuel of the present invention will also follow. Lower. However, since the octane number of methanol itself is very high, the acid-based fuel of the present invention has a relatively high octane number without using an octane number modifier.

 In one embodiment of the invention, the ether-based fuel comprises: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol and 0.01 - 0.1 parts by weight of 2,6-di-tert-butyl group Cresol, based on 100 parts by weight of dimethyl ether and methanol. The inventors of the present invention have experimentally confirmed that the ether-based fuel can be used as an automobile fuel without containing a main component of gasoline, particularly a hydrocarbon of C4 or higher, such as benzene, and has a preferable effect: Low content, long induction period, etc.

 The ether-based fuel of the present invention may consist solely of dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol. In one embodiment, the acid-based fuel consists of the following components: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of decyl alcohol and 0.01 - 0.1 parts by weight of 2,6-di-tert-butyl fluorene Phenol, based on a total of 100 parts by weight of dimethyl ether and methanol. In the case where the main component of gasoline, particularly a hydrocarbon of C4 or higher, such as benzene, is not contained, the ether-based fuel can be used as an automobile fuel, and has a preferable effect: a low gel content, a long induction period, and the like.

 The acid-based fuel may also be added with other components or additives depending on the needs of the particular application to further improve certain properties of the resulting fuel.

 Since the novel acid-based fuel of the present invention is different from conventional fuels such as gasoline and diesel, conventional gasoline additives are not necessarily usable for the acid-based fuel of the present invention. Before the conventional additives are used in the acid-based fuel of the present invention, the compatibility test must first be carried out. The compatibility test herein means that the additive to be used can be dissolved in the base fuel of the present invention and can be stably present without changing the properties of the ether-based fuel of the present invention. Only those additives which are compatible with the ether-based fuel of the present invention are likely to be used in the ether-based fuel of the present invention. In addition, it is also noted that the addition of additives does not significantly adversely affect the unique properties of the ether-based fuels of the present invention, such as cleanliness and the like.

 Conventional gasoline additives that may be used in the acid-based fuels of the present invention include, for example, catalysts, oxidizers, antioxidants, combustion improvers, detergents, and various antiknock agents, metal passivators, corrosion inhibitors, anti-icing agents > Corrosive agents, smoke suppressants, etc. These additives may be added to the ether-based fuel of the present invention after passing the compatibility test, provided that the unique properties of the ether-based fuel of the present invention are not significantly adversely affected. It is also possible to add a combination of additives to the ether-based fuel of the present invention, provided that the unique properties of the ether-based fuel of the present invention are not significantly adversely affected.

 The inventors have found through extensive experiments that some commercially available products are acid-based fuels that can be used in the present invention, such as ethanol gasoline detergents produced by the Petrochemical Research Institute, and fuel-saving detergents produced by Henan Xinxiang Si Te Fuel-saving Agent Factory. And other additives such as antiknock agents, catalysts, oxidizers, antioxidants, combustion improvers, metal passivators, corrosion inhibitors, anti-icing agents, anti-corrosion agents, smoke suppressants, etc., which are compatible with this ether-based fuel. .

The method for preparing the acid-based fuel of the present invention is not particularly limited, and the ether-based fuel of the present invention can be obtained by a conventional technique in the chemical industry. The preparation of the ether-based fuel of the invention comprises the addition of 2,6-di-tert-butyl-p-cresol, in the case of the inclusion of optional further additives, the addition of optional further additives, And a mixture of dimethyl ether and methanol. In general, 2,6-di-tert-butyl-p-cresol, optionally other additives, can be added to the methanol and then mixed with the dioxane. However, it is also possible to first carry out the mixing of dimethyl ether and methanol, followed by the addition of 2,6-di-tert-butyl-p-cresol and optionally other additives. For the subsequent addition of 2,6-di-tert-butyl-p-cresol and optionally other additives, if agitation is required, it should be stirred slowly. For the mixing of dioxane and decyl alcohol, a gas absorption tower can usually be used to obtain this mixing. The use of a gas absorption tower for liquid absorption of a liquid to obtain a mixture of liquid and gas is a conventional technique in the chemical industry. The ether-based fuel of the present invention is obtained by a physical absorption method, and only involves the absorption of dimethyl ether by decyl alcohol. In general, countercurrent absorption is typically selected to accomplish the preparation of the ether-based fuels of the present invention. The invention does not have any limitation on the selection of the absorption tower, and a packed tower or a tray tower can be selected. The present invention also has no limitation on the absorption conditions. In the face of the specific purpose of methanol absorption of dioxane gas, the chemical engineering technician selects the absorption tower and the absorption conditions according to the basic chemical principle and the relative content required. . In general, the absorption of dioxins by methanol can be accomplished by conventional room temperature absorption.

 This absorption process can be briefly described as follows: The diterpene ether gas is passed from the bottom of the absorption tower through a metering device (such as a gas distributor); at the same time, methanol is added (or 2,6-di-tert-butyl pair is premixed) The cresol and optionally other additives of methanol are added overhead, and the gas-liquid two phases flow countercurrently within the absorption column and are in direct and sufficient contact such that the dimethyl ether gas is absorbed by the methanol. Depending on the choice of absorber and its efficiency, one-way absorption or cyclic absorption can be used. For cyclic absorption, the dimethyl ether-containing methanol from the bottom of the column (and containing 2,6-di-tert-butyl-p-nonylphenol and optionally other additives) can be re-conveyed back to the top of the column and introduced to the column. Inside, the gas from the top of the column is re-conveyed back to the bottom of the column and introduced into the column, thereby repeating the absorption process of the dioxane gas. This repeated absorption can be performed as many times as needed. However, it will also be apparent to those skilled in the art that the diterpene ether can be substantially dissolved in the sterol by one-way absorption of the absorption column to achieve the desired dicarboxylic acid content without repeated absorption.

 The stability of the ether-based fuel of the present invention is much higher than that of ordinary gasoline. This can be demonstrated from the induction period and the substantial colloidal content after the acid-based fuel of the present invention is stored for a long period of time.

 The inventors of the present invention have found that the acid-based fuel of the first aspect of the invention has the advantages of high octane number, high oxygen content, low vapor pressure, low sulfur, low benzene, low aromatics and no lead. The ether-based fuel of the present invention can be used in existing vehicles without changing the engine structure. Second aspect of the invention

 A second aspect of the invention relates to an ether-based fuel comprising: dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol; the ether-based fuel further comprising at least one selected from the group consisting of water, castor oil and 3⁄4 ^ force agent in succinimide.

 The additives are described in detail below.

Castor oil is degreased, washed, dehydrated, decolorized, filtered by castor seeds (45% to 60% oil) The obtained non-drying oil has a relative density of 0.945-0.760 (20 °C), an iodine value of 84-90, an acetyl value of 176-186, and mainly contains ricinoleic acid glyceride, triolein, and tristearate. Ester, stearic acid ricinoleic acid glyceride and a small amount of isoricinoleic acid, stearic acid, 9,10-dihydroxystearic acid, trace cytochrome C and the like. The castor oil used in the present invention may be a commercial product.

 Water in the present invention preferably means distilled water or deionized water to avoid the introduction of impurities due to the addition of water.

The succinimide (CAS: 123-56-8) has a molecular formula of C ₄ H ₅ N0 ₂ and a molecular weight of 99.09, also known as succinimide, 2,5-pyrrolinedione, imine, etc. The structure is as follows:

The product is usually a colorless needle crystal or a sheet having a light brown luster. The melting point is 123-127 ° C, the boiling point is 285-290 ° C (easy decomposition), the flash point is 201 ° C, and the relative density is 1.412 (16 ° C). Soluble in water, alcohol or sodium hydroxide solution, insoluble in ether and chloroform. Sweet. The succinimide used in the present invention may be a commercial product produced by any process such as chlorination, thermal addition.

 Similarly, the inventors of the present invention unexpectedly found that the dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol and the at least one selected from the group consisting of water, castor oil and succinyl The acid-based fuel of the additive in the amine can be used as an automobile fuel without containing a main component of gasoline, particularly a hydrocarbon of C4 or higher, such as benzene, and has a remarkably low colloid content and a remarkable long quality. Time and induction period. Further, since the ether-based fuel can be directly used as an automobile fuel without containing a hydrocarbon such as benzene or the like, it is possible to satisfactorily meet environmental protection requirements.

 The ether-based fuel mainly contains dimethyl ether, methanol, 2,6-di-tert-butyl-p-nonylphenol, and an additive selected from at least one of water, castor oil, and succinimide. In general, in the ether-based fuel of the second aspect of the invention, the content of dimethyl ether may be 4 to 12 parts by weight (preferably 5 to 9 parts by weight), and the content of methanol may be 88 to 96 parts by weight (preferably The content of 2,6-di-tert-butyl-p-nonylphenol is from 0.005 to 0.5 parts by weight (preferably from 0.01 to 0.1 parts by weight), wherein the total weight of dioxane and methanol is 100 parts by weight. .

 In the ether-based fuel, water can be used as a combustion improver. Distilled water or deionized water is preferably used in view of avoiding the introduction of impurities due to the addition of water. Without wishing to be bound by a particular theory, the combustion of water can be explained as follows: First, water is decomposed under high temperature and pressure conditions (for example, under the conditions of a gasoline engine), generating hydrogen and oxygen, and participating in the reaction. Secondly, under the conditions of the engine combustion chamber, the water will rapidly vaporize and expand, thereby participating in the expansion work and promoting the contact of the fuel with the air.

Further, in the ether-based fuel of the present invention, water, particularly distilled water or deionized water, may also function as an octane modifier. As mentioned earlier, ether-based fuels containing dimethyl ether and methanol have higher octane numbers. Therefore, when the acid-based fuel containing dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol contains distilled water or deionized water, the acid group of the present invention can also be adjusted by adjusting the water content. The octane number of the fuel, more specifically the octane number. The inventors of the present invention have found that in the ether-based fuel of the present invention, in the case where the content of dimethyl ether and decyl alcohol is kept constant and is 100 parts by weight, the octyl of the acid-based fuel is added per 1 part by weight of water. The alkyl number will decrease by about 1.0. In an embodiment of the second aspect of the present invention, when the ether-based fuel contains water, the water content is from 5.3 to 16.3 parts by weight, preferably from 6.4 to 14 parts by weight, more preferably from 6.4 to 11.1 parts by weight, based on 100 parts by weight. Dimethyl ether and methanol.

 The inventors of the present invention have found that if castor oil is contained in an acid-based fuel containing dimethyl ether, methanol and 2,6-di-tert-butyl-p-nonylphenol, the function and effect of the ether-based fuel are further enhanced. In ether-based fuels, castor oil acts as a lubricant, viscosity modifier, active agent, and preservative. Moreover, when the ether-based fuel contains castor oil, corrosion and wear of engine parts can be reduced. In an embodiment of the second aspect of the present invention, when the ether-based fuel contains castor oil, the castor oil is contained in an amount of 0.5 to 2 parts by weight, preferably 0.7 to 1.5 parts by weight, more preferably 0.8 to 1.2 parts by weight, still more preferably 0.9. ～1.1 parts by weight, more preferably 0.97 to 1.05 parts by weight, based on 100 parts by weight of dioxane and methanol, the above effects are well exerted at this time, and corrosion and wear of engine parts are reduced.

 Although the ether-based fuel of the present invention containing sterol has a self-cleaning action as described above, since the fuel itself has impurities, the rust is incorporated into the production, transportation, and storage, and the unstable components in the fuel are liable to react. Therefore, deposits are easily generated, resulting in unstable idle speed, poor acceleration, increased fuel consumption, and increased emissions of harmful gases such as hydrocarbons, carbon monoxide, and nitrides. In order to further enhance the cleaning action of the ether-based fuel of the present invention, further increase the cleaning of the oil passage system and reduce the generation of engine carbon, the ether-based fuel of the present invention may further contain a detergent.

 Detergent is one of the fastest-growing additives used in the lubricating oil since the 1960s. It can inhibit the oil from being generated when the operating temperature of the crankcase is low, thus avoiding oil blockage, corrosion and wear of the parts. The most widely used and most widely used detergent is a succinimide-type detergent, which includes succinimide, polyolefin succinimide, borated polyolefin succinimide, and N- Halogenated succinimide and the like. At present, polyolefin succinimide which is excellent in thermal stability is often used in the industry to replace succinimide because the high temperature stability of succinimide is insufficient. Further, succinimide is mainly added as a detergent to a lubricating oil, such as an engine oil of an internal combustion engine, and no report of its addition to an ether-based fuel has been reported.

The inventors have found that the ether-based fuel of the second aspect of the invention preferably contains a detergent succinimide as an additive. The succinimide contains a polar region and a non-polar region, and its polar region surrounds the tiny particles of the formed deposit to form micelles, which are dispersed into the fuel for cleaning purposes; Adsorbed on the surface of metal or ions to form a molecular protective film that prevents the particles from accumulating or adhering to the metal surface to maintain cleanliness. Therefore, succinimide can remove sludge and carbon deposits from the carburetor and crankcase system, reduce atmospheric pollution, reduce CO emissions, reduce HC (hydrocarbon) emissions, and reduce oil pumps. And the wear of the injector prevents the cremation plug from coking and increases the power of the engine, thereby saving energy and improving fuel economy. To date, in the field of gasoline additives, it has been apt to consider that succinimide cannot be effectively cleaned in a small amount due to insufficient thermal stability. However, the inventors of the present invention have unexpectedly found that a lower level of succinimide can be used in the warm-base fuel of the present invention to effectively improve the detergency of the acid-based fuel of the present invention. While not intending to be bound by a particular theory, the inventors of the present invention believe that the reason why a small amount of succinimide can function in the present invention can be explained as follows: First, unlike the exothermic reaction of conventional gasoline, The combustion of the ether-based fuel of the invention is an endothermic reaction. Therefore, when the ether-based fuel of the present invention is burned, the temperature in the engine is lower than the temperature at which the gasoline is burned, which lowers the decomposition of the succinimide. Second, since conventional fuels such as diesel and gasoline do not have a cleansing effect, when succinimide is used in diesel and gasoline, a larger amount of succinimide is required to offset the pyrolysis of succinimide. The resulting cleansing effect is reduced. However, in the ether-based fuel of the present invention, since the acid-based fuel of the present invention itself has a self-cleaning action when it does not contain succinimide as described above, the effective amount of succinimide is required. Smaller. Therefore, even if the effective content of the succinimide is lowered due to the high temperature condition of the engine, the purification effect of the succinimide in the acid-based fuel of the present invention is not affected.

 In the present invention, when the ether-based fuel contains succinimide, the content of the succinimide is

0.005 to 0.02 parts by weight, preferably 0.008 to 0.012 parts by weight based on 100 parts by weight of dimethyl ether and decyl alcohol.

 In the present invention, the additive may be present in the ether-based fuel of the second aspect of the invention in a combination of additives. For example, in the base fuel of the second aspect of the present invention, the additive may be one of water, castor oil, and succinimide, that is, the additive is water, castor oil, or succinimide; or The additive may be a combination of two of water, castor oil and succinimide, that is, the additive may be a combination of water and castor oil, a combination of water and succinimide, castor oil and diced A combination of imides; alternatively, the additive may also be a combination of all three, that is, the additive may be a combination of water, castor oil, and succinimide. In the present invention, regardless of whether water, castor oil and succinimide are used alone as an additive or as a additive in a combined manner, the respective contents thereof are preferably within the above range.

 When the content of each of dimethyl ether, decyl alcohol, 2,6-di-tert-butyl-p-nonylphenol, and each additive selected from at least one of water, succinimide, and castor oil is within the above range, the present invention Ether-based fuels have good results.

 In an embodiment of the second aspect of the present invention, the ether-based fuel comprises dimethyl ether, methanol,

2,6-di-tert-butyl-p-cresol and castor oil. In another embodiment, the ether-based fuel comprises: 5 to 9 parts by weight of dioxanyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-tert-butyl-p-nonylphenol, 0.7-1.5 parts by weight of castor oil based on 100 parts by weight of total dioxane and decyl alcohol.

In one embodiment of the second aspect of the invention, the ether-based fuel comprises dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and succinimide. In another embodiment, the ether-based fuel comprises: 5 to 9 parts by weight of dimethyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-union Butyl p-cresol, 0.008-0.012 parts by weight of succinimide, based on 100 parts by weight of total dioxane and methanol.

 In one embodiment of the second aspect of the invention, the acid-based fuel comprises dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and water. In another embodiment, the ether-based fuel comprises: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl, 6.4-11.1 parts by weight of water based on 100 parts by weight of total dioxane and methanol.

 In one embodiment of the second aspect of the invention, the ether-based fuel comprises dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, castor oil, and water. In another embodiment, the ether-based fuel comprises: 5 to 9 parts by weight of dimethyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-tert-butyl-p-methylhydrazine, 0.7-1.5 parts by weight of castor oil, 6.4-11.1 parts by weight of water, based on 100 parts by weight of the total amount of dimethyl ether and methanol.

 In one embodiment of the second aspect of the invention, the ether-based fuel comprises didecyl ether, methanol, 2,6-di-tert-butyl-p-cresol, succinimide, and water. In another embodiment, the acid-based fuel comprises: 5 to 9 parts by weight of dioxanyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-tert-butyl-p-cresol, 6.4-11.1 parts by weight of water, 0.008-0.012 parts by weight of succinimide, based on 100 parts by weight of total dioxane and methanol.

 In an embodiment of the second aspect of the present invention, the ether-based fuel comprises dimethyl ether, methanol,

2,6-di-tert-butyl-p-cresol, castor oil and succinimide. The inventors have also surprisingly found that in the acid-based fuel containing dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, castor oil and succinimide, 2,6-di-tertiary The combination of butyl p-cresol, castor oil and succinimide provides a synergistic effect on the quality of the ether-based fuel, complete combustion of the fuel, safe engine operation and sufficient power.

 In an embodiment of the second aspect of the present invention, the ether-based fuel comprises: 5 to 9 parts by weight of dioxanyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-union Butyl p-nonylphenol, 0.7-1.5 parts by weight of castor oil and 0.008-0.012 parts by weight of succinimide, based on a total of 100 parts by weight of dimethyl ether and methanol. The inventors of the present invention have found that when the content of dimethyl ether, methanol, 2,6-di-tert-butyl-p-nonylphenol, castor oil and succinimide is within the above range, the main component of gasoline is not contained, In particular, in the case of hydrocarbons such as benzene above C4, the acid-based fuel can be used as an automobile fuel, and the performance is better: for example, a long induction period, a low gel content, an excellent self-cleaning effect, and an exhaust gas emission amount. Greatly reduced, good stability, and fuel combustion is more complete, engine operation is safe and power is sufficient.

In one embodiment of the second aspect of the invention, the ether-based fuel comprises dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, castor oil, succinimide, and water. In another embodiment, the ether-based fuel comprises: 5 to 9 parts by weight of dimethyl ether, 91 to 95 parts by weight of methanol, 0.01 to 0.1 part by weight of 2,6-di-tert-butyl-p-cresol, 0.7-1.5 parts by weight of castor oil, 0.008-0.012 parts by weight of succinimide and 6.4-11.1 parts by weight of water based on 100 parts by weight total of dimethyl ether and decyl alcohol. The inventors of the present invention have found that when the content of dimethyl ether, methanol, 2,6-di-tert-butyl-p-nonylphenol, castor oil, succinimide, and water is within the above range, the main group is not contained in gasoline. In the case of hydrocarbons such as benzene, such as benzene, etc., the ether-based fuel can be used as an automobile fuel, and has better performance: for example, long induction period, low gel content, excellent self-cleaning effect, exhaust gas The emission is greatly reduced, the stability is good, the fuel consumption is low, the fuel is burned more fully, the engine is safe to operate and the power is sufficient.

 In one embodiment, the acid-based fuel of the second aspect of the invention may be composed of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and at least one selected from the group consisting of water, castor oil, and succinyl The composition of the additives in the amine. ® in this embodiment! In the base fuel, the content of each component may be within the above range, that is, the content of the diterpene ether is 4 to 12 parts by weight (preferably 5 to 9 parts by weight), and the methanol content is 88 to 96 parts by weight (preferably 91). - 95 parts by weight), and the total content of dimethyl ether and decyl alcohol is 100 parts by weight; the content of 2,6-di-tert-butyl-p-nonylphenol is 0.01 - 0.1 parts by weight based on 100 parts by weight of total dimethyl ether And decyl alcohol; when the ether-based fuel contains water, the water content is 5.3-16.3 parts by weight, preferably 6.4-14 parts by weight, more preferably 6.4-11.1 parts by weight; when the ether-based fuel contains castor oil The content of the castor oil is 0.5-2 parts by weight, preferably 0.7-1.5 parts by weight; when the ether-based fuel contains succinimide, the content of the succinimide is 0.005-0.02 parts by weight, preferably 0.008-0.012 parts by weight; the parts by weight are all based on 100 parts by weight of dimethyl ether and methanol.

 In one embodiment of the second aspect of the invention, the ether-based fuel consists of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and castor oil. In another embodiment, the composition of the acid-based fuel is: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl-p- Phenol, 0.7 to 1.5 parts by weight of castor oil, based on 100 parts by weight of the total amount of dimethyl ether and methanol.

 In an embodiment of the second aspect of the present invention, the acid-based fuel is composed of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and succinimide. In another embodiment, the composition of the acid-based fuel is: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl fluorene Phenol, 0.008-0.012 parts by weight of succinimide, based on 100 parts by weight of the total amount of dimethyl ether and methanol.

 In one embodiment of the second aspect of the invention, the ether-based fuel consists of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, and water. In another embodiment, the composition of the acid-based fuel is: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl-p- Phenol, 6.4-11.1 parts by weight of water based on 100 parts by weight of the total amount of dimethyl ether and methanol.

In one embodiment of the second aspect of the invention, the ether-based fuel consists of dimethyl ether, decyl alcohol, 2,6-di-tert-butyl-p-cresol, castor oil, and water. In another embodiment, the composition of the ether-based fuel is: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl fluorene Phenol, 0.7-1.5 parts by weight of castor oil, 6.4-11.1 parts by weight of water based on 100 parts by weight of the total amount of dicapric acid and methanol. In an embodiment of the second aspect of the present invention, the ether-based fuel is derived from dimethyl ether, methanol,

2,6-di-tert-butyl-p-cresol, water and succinimide. In another embodiment, the composition of the base fuel is: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl-p-group Phenol, 6.4-11.1 parts by weight of water, 0.008-0.012 parts by weight of succinimide, based on 100 parts by weight of the total amount of dimethyl ether and methanol.

 In one embodiment of the second aspect of the invention, the ether-based fuel consists of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, castor oil, and succinimide. In another embodiment, the ether-based fuel consists of the following components: 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 parts by weight of 2,6-di-tert-butyl P-cresol, 0.7-1.5 parts by weight of castor oil and 0.008-0.012 parts by weight of succinimide, based on a total of 100 parts by weight of dimethyl ether and methanol. The inventors of the present invention have found that when the content of dimethyl ether, methanol, 2,6-di-tert-butyl-p-cresol, castor oil and succinimide is within the above range, the performance of the ether-based fuel is better. : For example, long induction period, low gel content, excellent self-cleaning effect, greatly reduced exhaust gas emission, good stability, and more complete fuel combustion, safe engine operation and sufficient power, low fuel consumption.

 In an embodiment of the second aspect of the present invention, the ether-based fuel is composed of dimethyl ether, decyl alcohol,

2,6-di-tert-butyl-p-cresol, castor oil, succinimide and water. In another embodiment, the acid-based fuel is composed of 5 - 9 parts by weight of dimethyl ether, 91 - 95 parts by weight of methanol, 0.01 - 0.1 part by weight of 2,6-di-tert-butyl P-cresol, 0.7-1.5 parts by weight of castor oil, 0.008-0.012 parts by weight of succinimide and 6.4-11.1 parts by weight of water based on a total of 100 parts by weight of dimethyl ether and decyl alcohol. The inventors of the present invention have found that when the content of dimethyl ether, decyl alcohol, 2,6-di-tert-butyl-p-cresol, castor oil, succinimide and water is within the above range, the ether-based fuel Better performance: For example, long induction period, low gel content, excellent self-cleaning effect, greatly reduced exhaust gas emissions, good stability, more complete fuel combustion, safe engine operation and sufficient power, low fuel consumption.

 Likewise, the acid-based fuel may further incorporate other components or other additives depending on the needs of the particular application to further improve certain properties of the resulting fuel.

 Since the novel acid-based fuel of the present invention is different from conventional fuels such as gasoline and diesel, conventional gasoline additives are not necessarily usable for the acid-based fuel of the present invention. Before the conventional additives are used in the acid-based fuel of the present invention, the compatibility test must first be carried out. The compatibility test herein means that the additive to be used can be dissolved in the ether-based fuel of the present invention and can be stably present without changing the properties of the ether-based fuel of the present invention. Only those additives which are compatible with the ether-based fuel of the present invention are likely to be used in the ether-based fuel of the present invention. In addition, it is noted that the addition of additives does not affect the unique properties of the ether-based fuels of the present invention.

Conventional gasoline additives that may be used in the acid-based fuels of the present invention include, for example, catalysts, oxidizers, antioxidants, combustion improvers, detergents, and various antiknock agents, metal passivators, corrosion inhibitors, anti-icing agents, and anti-fouling agents. Corrosive agents, smoke suppressants, etc. These additives can be tested after passing the compatibility test. It is added to the ether-based fuel of the present invention, provided that the unique properties of the ether-based fuel of the present invention are not affected. It is also possible to add a combination of additives to the ether-based fuel of the present invention, provided that the unique properties of the acid-based fuel of the present invention are not affected.

 The inventors have found through extensive experiments that some commercially available products are acid-based fuels that can be used in the present invention, such as ethanol gasoline detergents produced by the Petrochemical Research Institute, and fuel-saving detergents produced by Henan Xinxiang Si Te Fuel-saving Agent Factory. And other additives such as antiknock agents, catalysts, oxidizers, antioxidants, combustion improvers, metal passivators, corrosion inhibitors, anti-icing agents, anti-corrosion agents, smoke suppressants, etc., which are compatible with this ether-based fuel. .

 The method for preparing the ether-based fuel of the present invention is not particularly limited, and the ether-based fuel of the present invention can be obtained by a conventional technique in the chemical industry. The preparation of the ether-based fuel of the present invention comprises the addition of 2,6-di-tert-butyl-p-cresol, at least one additive selected from the group consisting of castor oil and succinimide, in the case of including optional other additives, The addition of optional other additives, as well as the mixing of dioxane and decyl alcohol. In general, 2,6-di-tert-butyl-p-cresol and the at least one additive selected from the group consisting of water, castor oil and succinimide, optionally other additives, may be added to the methanol, and then Mix with dioxins and add water if you wish to include water. However, it is also possible to first carry out the mixing of dimethyl ether and decyl alcohol, and then add 2,6-di-tert-butyl-p-cresol, at least one additive selected from the group consisting of water, castor oil and succinimide, and Optional other additives. For the subsequent addition of 2,6-di-tert-butyl-p-cresol and water and the at least one additive selected from the group consisting of castor oil and succinimide, optional other additives, if stirring is required, Stir slowly. For the mixing of dimethyl ether and methanol, a gas absorption tower can usually be used to obtain this mixing. The use of a gas absorption tower for liquid absorption of a liquid to obtain a mixture of liquid and gas is a conventional technique in the chemical industry. The ether-based fuel of the present invention is obtained by a physical absorption method and involves only the absorption of dimethyl ether by methanol. In general, countercurrent absorption is generally selected to accomplish the preparation of the ether-based fuels of the present invention. The present invention does not have any limitation on the selection of the absorption tower, and a packed tower or a tray tower can be selected. The present invention also has no limitation on the absorption conditions. When the chemical engineering technician faces the specific purpose of absorbing methanol to dimethyl ether gas, the absorption tower and the absorption conditions are selected according to the basic chemical principle and the relative content required. . In general, absorption of dioxins by methanol can be accomplished by absorption at room temperature.

This absorption process can be briefly described as follows: The dimethyl ether gas is passed through the metering device (such as a gas distributor) from the bottom of the absorption tower; at the same time, the methanol is (or pre-mixed with 2,6-di-tert-butyl pair). The gas and the at least one additive selected from the group consisting of water, castor oil and succinimide and optionally other additives are added from the top of the column, and the gas-liquid two phases are reversely flowed in the absorption column and directly And in full contact, the diterpene ether gas is absorbed by methanol. Depending on the choice of absorption tower and its efficiency, one-way absorption or cyclic absorption can be used. For cyclic absorption, a dimethyl ether-containing sterol derived from the bottom of the column (and containing at least one additive selected from the group consisting of water, castor oil, and succinimide, 2,6-di-tertiary) The butyl p-cresol and optionally other additives are re-delivered back to the top of the column and introduced into the column, and the gas from the top of the column is re-conveyed back to the bottom of the column and introduced into the column. This repeats the absorption process of dimethyl ether gas. This repeated absorption can be performed as many times as needed. However, it will also be apparent to those skilled in the art that dimethyl ether can be substantially dissolved in methanol by one-way absorption of the absorption column to achieve the desired diterpenic acid content without repeated absorption.

 The stability of the ether-based fuel of the present invention is much higher than that of ordinary gasoline. This can be demonstrated from the induction period and the substantial colloidal content after the acid-based fuel of the present invention is stored for a long period of time.

 The inventors of the present invention have found that the acid-based fuel of the second aspect of the invention has the advantages of high octane number, high oxygen content, low vapor pressure, low sulfur, low benzene, low aromatics and no lead. The ether-based fuel of the present invention can be used in existing vehicles without changing the engine structure. Third aspect of the invention

 In a third aspect of the invention, the invention relates to a mixed fuel comprising the acid-based fuel of the first and second aspects of the invention and other fuels, such as gasoline.

 The inventors have found that the acid-based fuels of the first and second aspects of the invention can be used alone as fuel for engines, particularly gasoline engines. Therefore, the ether-based fuel of the present invention can completely replace gasoline for automobile fuel. However, the ether-based fuels of the first and second aspects of the invention may also be used in combination with conventionally used gasoline, or even methanol gasoline or ethanol gasoline. When the ether-based fuel of the first aspect and the second aspect of the invention is compounded with gasoline, the mixing ratio of the ether-based fuel to gasoline can be arbitrarily adjusted as needed.

 In general, in the mixed fuel of the third aspect of the invention, the content of the base fuel according to the first aspect and the second aspect of the invention may be from 1 to 99% by weight based on the total weight of the mixed fuel. Preferably, the ether-based fuel of the present invention may be present in an amount of from 10 to 90% by weight based on the total weight of the mixed fuel.

 Other fuels which may be used in the third aspect of the invention may be gasoline, such as regular gasoline, and methanol gasoline or ethanol gasoline, particularly motor gasoline. These gasolines may be numbered 90, 93, 97, 100 or 103 gasoline.

In the present application, ordinary gasoline means gasoline which is not added with dimethyl ether, methanol or ethanol. Methanol gasoline and ethanol gasoline refer to gasoline with sterol or ethanol, respectively. Since methanol has been added to the sterol gasoline, the sterol carried in the sterol gasoline changes the dimethyl ether to methanol ratio of the acid-based fuel of the present invention when the ether-based fuel of the present invention is used in combination with methanol gasoline. Therefore, when the ether-based fuel of the present invention is used in combination with methanol gasoline, depending on the specific conditions and uses, it is necessary to consider the sterol content in the methanol gasoline to finally determine the mixing ratio of the ether-based fuel of the present invention to the methanol gasoline. Alternatively, when the acid-based fuel of the present invention is used in combination with methanol gasoline, depending on the specific conditions and uses, the methanol content in the methanol gasoline needs to be considered in order to ensure that the introduction of sterol in the sterol gasoline does not result in the ether of the present invention. The content ratio of dimethyl ether and decyl alcohol in the base fuel deviates from the scope of the present invention. In general, in order to make the diterpene ether content of the ether-based fuel of the present invention in a preferred range of, for example, 5 to 9 parts by weight based on 100 parts by weight of the total amount of decyl alcohol and dioxane, when sterol gasoline is used, The mixing ratio of sterol fuel should not exceed 50%. For example, methanol gasoline contains 15% by weight of methanol. When used in combination, the ratio of diether ether used in the present invention should be considered, and the role of dimethyl ether in the ether-based fuel can ensure the fuel performance in the mixed fuel after mixing. The mixing ratio of methanol gasoline should not exceed 50% of the ether-based fuel of the present invention.

 In general, the acid-based fuels of the first and second aspects of the invention may be blended in an arbitrary ratio with ordinary gasoline. In particular, the acid-based fuel is compounded with ordinary gasoline in a weight ratio of 10:90 to 90:10. More preferably, the ether-based fuel is compounded with ordinary gasoline in a weight ratio of 30:70 to 70:30.

 When the mixing ratio of the ether-based fuel is as high as 90%, that is, 90 parts by weight of the acid-based fuel of the present invention is mixed with 10 parts by weight of ordinary gasoline (for example, No. 93 gasoline), the obtained mixed fuel is stable in quality and has a long shelf life. 2 years without stratification.

 When the ether-based fuel of the present invention is mixed with normal gasoline in a ratio of 30% or in a ratio of 20% to sterol gasoline or ethanol gasoline, the power and fuel saving effect can be achieved. Under the same operating conditions of the engine, the fuel savings can be as high as 10% or more. By using the ether-based fuel of the present invention in combination with gasoline, the substitution ratio can be increased to 0.7 to 1 (the substitution ratio of ethanol gasoline is 1.6-1.7). Here, the substitution ratio means an amount of parts by weight of ethanol gasoline or the ether-based fuel of the present invention which is required to replace one part of ordinary gasoline. Further, by using the ether-based fuel of the present invention, the exhaust gas emission can be greatly reduced, thereby providing an excellent environmental effect.

 As described above, since the ether-based fuel of the present invention has a high octane number, usually more than 100, the acid-based fuel of the present invention can be used to increase the number of ordinary gasoline. For example, the ether-based fuel of the present invention can be used to make the No. 90 or No. 93 gasoline reach the standard of No. 93 or No. 97 gasoline, respectively.

 Further, the stability of ordinary gasoline can be improved by using the ether-based fuel of the present invention. In general, the stability of commercially available regular gasoline is not good enough. By blending the base fuel of the present invention with commercially available ordinary gasoline, the induction period of ordinary gasoline can be increased and the gum content can be lowered.

 In general, in the mixed fuel of the third aspect of the invention, if the ether-based fuel of the present invention contains water, the presence of water may cause the gasoline to be emulsified or even stratified. This will likely limit the range of use of the fuel blend of the present invention, e.g., not for an EFI engine, but for a carburetor engine. Therefore, it is preferred that the ether-based fuel of the first aspect and the second aspect of the invention does not contain water when used in combination with gasoline.

There is no particular limitation on the method of obtaining the mixed fuel. The mixed fuel can be obtained by mixing the ether-based fuel of the present invention with gasoline. For example, the ether-based fuel of the present invention may be added to gasoline, or gasoline may be added to the ether-based fuel of the present invention, or the ether-based fuel of the present invention and gasoline may be simultaneously added to a separate container and uniformly mixed. To get a blend of fuel. This mixing can be obtained with slow agitation. The invention will now be further described by reference to specific examples. However, the invention is not limited by these specific examples.

 Example

 In the following examples, the raw material source is used as follows:

 Sterol, more than 99%, purchased from Beijing Chemical Plant

 Dimethyl ether, content 99.5 %, purchased from Hebei Hunchun Dimethyl Ether Development Co., Ltd.

 2,6-di-tert-butyl-p-cresol, purchased from Sinopharm Chemical Reagent Co., Ltd.

 Castor oil, purity greater than 99%, purchased from Sinopharm Chemical Reagent Co., Ltd.

 Succinimide, content 98.8-100.5%, purchased from Sinopharm Chemical Reagent Co., Ltd. Water is distilled water. Ether-based fuel example 1

 In a conventional absorption tower, dimethyl ether was absorbed in methanol according to a countercurrent absorption method to obtain a decyl alcohol solution having a dimethyl ether concentration of 5% by weight, thereby obtaining an acid-based fuel 1.

 Ether-based fuel example 2

 In the same manner as in the ether-based fuel example 1, in the above-mentioned absorption tower, dimethyl ether was absorbed in methanol according to a countercurrent absorption method to obtain a methanol solution having a diterpene ether concentration of 9 wt%, thereby obtaining an acid-based fuel 2.

 Ether-based fuel example 3

 In a transparent container, 0.5 g of 2,6-di-tert-butyl-p-cresol was dissolved in 10 kg of the ether-based fuel 1 prepared as described above, and stirred slightly to obtain an ether-based fuel of Example 3.

 Ether-based fuel example 4

 In a transparent container, lg of 2,6-di-tert-butyl-p-nonylphenol was dissolved in 10 kg of the ether-based fuel 2 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 4.

 Acid based fuel example 5

 In a transparent container, 10 g of 2,6-di-tert-butyl-p-nonylphenol was dissolved in 10 kg of the ether-based fuel 2 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 5.

 Ether-based fuel example 6

 In a transparent container, 50 g of 2,6-di-tert-butyl-p-nonylphenol was dissolved in 10 kg of the ether-based fuel 1 prepared as described above, and stirred slightly to obtain an ether-based fuel of Example 6.

 Ether-based fuel embodiment Ί

 In a transparent container, 100 g of castor oil was dissolved in the ether-based fuel 4 prepared as described above, and gently mixed to obtain an ether-based fuel of Example 7.

 Acid based fuel example 8

In a transparent container, 1000 g of water was dissolved in the ether-based fuel 5 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 8. Ether-based fuel example 9

 In a transparent container, lg of succinimide was dissolved in the acid-based fuel 4 prepared as described above, and gently stirred to obtain a base fuel example 9.

 Acid based fuel embodiment 10

 In a transparent container, 100 g of castor oil and 100 g of water were dissolved in the ether-based fuel 4 prepared as above, and gently stirred to obtain an acid-based fuel of Example 10.

 Ether-based fuel example 11

 In a transparent container, 100 g of castor oil and lg of succinimide were dissolved in the ether-based fuel 4 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 11.

 Acid based fuel example 12

 In a transparent container, 100 g of water and lg of succinimide were dissolved in the ether-based fuel 4 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 12.

 Ether-based fuel example 13

 In a transparent container, 100 g of water, 100 g of castor oil and 1 g of succinimide were dissolved in the acid-based fuel 4 prepared as described above, and gently stirred to obtain an ether-based fuel of Example 13. Mixed fuel example 1

 In a transparent container, 200 g of the above ether-based fuel 1 and 1800 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed in a weight ratio of 10:90 to obtain a mixed fuel 1.

 Mixed fuel example 2

 In a transparent container, 600 g of the above ether-based fuel 2 and 1400 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 30:70 to obtain a mixed fuel 2.

 Mixed Fuel Example 3

In a transparent container, 1000 g of the above-mentioned acid-based fuel 1 and 1000 _{g of} No. 90 motor gasoline (manufactured by Sinopec Beijing Co., Ltd.) were mixed in a weight ratio of 50:50 to obtain a mixed fuel 3.

 Mixed Fuel Example 4

 In a transparent container, 1400 g of the above ether-based fuel 1 and 600 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 70:30 to obtain a mixed fuel 4.

 Mixed Fuel Example 5

 In a transparent container, 1800 g of the above ether-based fuel 1 and 200 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 90:10 to obtain a mixed fuel 5.

 Mixed Fuel Example 6

 In a transparent container, 1000 g of the above ether-based fuel 1 and 1000 g of No. 90 ethanol gasoline (commercially available ethanol gasoline, 10% ethanol content) were mixed in a weight ratio of 50:50 to obtain a mixed fuel 6.

Mixed Fuel ExampleΊ In a transparent container, 1000 g of the above acid-based fuel 2 and 1000 g of No. 90 methanol gasoline (commercially available methanol gasoline, sterol content of 15%) were mixed in a weight ratio of 50:50 to obtain a mixed fuel 7.

 Mixed Fuel Example 8

 In a transparent container, 200 g of the above ether-based fuel 3 and 1800 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed in a weight ratio of 10:90 to obtain a mixed fuel Example 8.

 Mixed Fuel Example 9

 In a transparent container, 600 g of the above-mentioned acid-based fuel 4 and 1400 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 30:70 to obtain a mixed fuel Example 9.

 Mixed Fuel Example 10

 In a transparent container, 1000 g of the above ether-based fuel 5 and 1000 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed in a weight ratio of 50:50 to obtain a mixed fuel Example 10.

 Mixed Fuel Example 11

 In a transparent container, 1400 g of the above ether-based fuel 6 and 600 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 70:30 to obtain a mixed fuel Example 11.

 Mixed Fuel Example 12

 In a transparent container, 1800 g of the above ether-based fuel 7 and 200 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed in a weight ratio of 90:10 to obtain a mixed fuel example 12.

 Mixed Fuel Example 13

 In a transparent container, 1200 g of the above ether-based fuel 9 and 800 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed in a weight ratio of 60:40 to obtain a mixed fuel Example 13.

 Mixed Fuel Example 14

 In a transparent container, 800 g of the above ether-based fuel 11 and 1200 g of No. 90 motor gasoline (manufactured by Sinolithic Beijing Co., Ltd.) were mixed at a weight ratio of 40:60 to obtain a mixed fuel example 14.

 Mixed Fuel Example 15

 In a transparent container, 100% of the above ether-based fuel 11 and 1000 g of No. 90 ethanol gasoline (commercially available ethanol gasoline, having an ethanol content of 10%) were mixed in a weight ratio of 50:50 to obtain a mixed fuel Example 15.

 Mixed Fuel Example 16

 In a transparent container, 100% of the above ether-based fuel 11 and 1000 g of No. 90 methanol gasoline (commercial sterol gasoline, methanol content of 15%) were mixed in a weight ratio of 50:50 to obtain a mixed fuel Example 16. Storage test

1. The prepared mixed fuels 1 - 16 were each sealed and stored at ambient temperature overnight, and then visually observed, no delamination was observed. 2. Take 100% of the prepared mixed fuels 1 - 16 and store them in a sealed state. After storage for 3 months at ambient temperature, visual observation is carried out, and no delamination is observed. Octane measurement

 The octane number of the acid-based fuel 1-13 and the mixed fuel 1-16 obtained above was measured in accordance with the GB/T 5487 gasoline octane number measurement method (study method), and the measurement results are shown in Table 1. Stability test

表 1 (续） The prepared acid-based fuel 1 - 13 and the mixed fuel 1 - 16 are placed under ambient conditions for 3 months, and then the acid-based fuel 1-13 and the mixed fuel 1-16 are measured according to GB/T8019, and The induction period was measured in accordance with GB/T8018, and the measurement results are shown in Table 1. Table 1

Table 1 (continued)

醚基燃料 11 醚基燃料 2 , 10000g > 100 1 1900 2,6-二叔丁基对甲酚， lg

Ether-based fuel 11 ether-based fuel 2 , 10000g > 100 1 1900 2,6-di-tert-butyl-p-cresol, lg

 Succinimide, lg

 Castor oil, 100g

 Ether-based fuel 12 ether-based fuel 2 , lOOOOg > 100 1 1700

 2,6-di-tert-butyl pair, lg

 Succinimide, lg

 Water, 1000g

 Ether-based fuel 1 , lOOOOg > 100 1 1700 2,6-di-tert-butyl-p-cresol, lg

 Succinimide, lg;

 Castor oil, 100g

 Water, lOOOOg Table 1 (continued)

混合燃料 16 醚基燃料 11 , 1000g; > 100 2 1800

Mixed fuel 16 ether based fuel 11, 1000g; > 100 2 1800

No. 90 methanol gasoline, 1000g vehicle 2km operation test

 The fuel tank gasoline of Huajiang Automobile (Dongan 462 engine) was drained, and the above ether-based fuel 1 - 13 and mixed gasoline fuel 1 - 16 were each taken in 2 kg and placed in a fuel tank. After the ignition is started, after 10 minutes of test burning, a 2 km experimental operation (the highway is a highway with an average speed of about 80 km/h) is carried out. The above operation results were compared with those when the vehicle was operated using No. 93 motor gasoline (manufactured by Sinopec Beijing Co., Ltd.) according to the following comparison items 1 - 4. The comparison item 1-3 is judged by the subjective feeling of the driver who has 10 years of driving experience. In item 4, the remaining fuel is discharged from the tank and the weight is weighed to calculate the fuel consumption. Comparison project:

 Engine combustion

 2. Vehicle operating conditions

 3. Whether the exhaust pipe emits visible impurities (for example, black smoke, etc.) (At this time, the exhaust pipe needs to be lengthened so that the driver can see the exhaust gas discharged from the exhaust pipe).

 4. How does the fuel consumption compare with gasoline?

 The above comparison results are shown in Table 2. In the column "Engine Burning Situation" in Table 2, "o" indicates that the engine combustion condition is comparable to or better than that of No. 93 motor gasoline; "" indicates that the engine combustion condition is inferior to that of No. 93 motor gasoline.

 In the "Vehicle Operation Status" column of Table 2, "◎, indicates that the vehicle operating condition is equal to or better than the No. 93 vehicle gasoline; " " indicates that the vehicle is inferior to the No. 93 motor gasoline.

 In the column "Whether the exhaust pipe discharges visible impurities" in Table 2, "©" means no visible impurities are discharged; "" indicates that visible impurities are emitted.

 In the column "How the fuel consumption compares with gasoline" in Table 2, "©" indicates that the fuel consumption is equal to or better than that of No. 93 motor gasoline; "" indicates that the fuel consumption is inferior to that of No. 93 motor gasoline. Vehicle long distance running test

The above test of the preparation of the ether-based fuel 1 - 13 and the mixed fuel 1 - 16 was repeated, except that the amount of each component was increased to 10 times of the original amount, so as to be used for the same Songhuajiang automobile for the 600 km long distance test. And for the Audi A6 (Audi A6 2.4 displacement car engine is a V-type 6-cylinder / 6-valve electronically controlled multi-point fuel injection engine.) 800 km long distance running test. And in accordance with the above method, evaluate the operation of the vehicle. Long-distance running tests use high-speed road sections with an average speed of 100 km/h. The evaluation results are shown in Table 2. The inventors have found that when the above-described operational tests are carried out using the ether-based fuel and the mixed fuel of the present invention, consistently good results are obtained for short distances, long distances, and different types of automobiles, and therefore, the results in Table 2 below represent the above. All the results of the running test.

 Table 2

As can be seen from the results of Tables 1 and 2, the base acid-based fuel, the ether-based fuel of the present invention, and the mixed fuel containing the ether-based fuel of the present invention can be used in various gasoline engines for vehicles, fuel consumption and commercial use. Gasoline is basically the same. When the ether-based fuel of the present invention is blended with gasoline in a ratio of 30% or ethanol in a ratio of 20%, the power is more sufficient, and the fuel consumption is reduced by more than 10%. The results of Tables 1 and 2 also confirmed that the ether-based fuel of the present invention can be used alone or in combination with various gasolines. The results in Table 1 also confirmed that the ether-based fuels of the present invention have higher octane numbers, all exceeding 98. Moreover, the ether-based fuel of the present invention can be used to increase the octane number of ordinary gasoline or methanol or ethanol gasoline, and to improve the stability of ordinary gasoline or decyl alcohol or ethanol gasoline. Fuel detection

 The above-mentioned ether-based fuels 1 - 13 and mixed fuels 1 - 16 were subjected to weighting, copper corrosion and lead content detection. The distillation process is tested in accordance with GB/T6536, the copper corrosion test is carried out in accordance with GB/T5096, and the lead content is tested in GB/T8020. The test results are shown in Table 3 below.

从表 3的结果可以看出， 本发明的醚基燃料以及含有本发明的醚基燃料 的混合燃料各项指标均获得良好的结果。 尾气排放检测

As can be seen from the results of Table 3, the ether-based fuel of the present invention and the mixed fuel containing the ether-based fuel of the present invention all obtained good results. Exhaust emission detection

 According to GB18285-2005, Chery SQR7080 car engine model SQR372FD and Songhuajiang mini ordinary bus are used. The old car carburetor is scrapped. It runs in October 1999 and runs for 400 years. It is Dongan 462. Exhaust emission measurement of the above-described base fuel 1-13 and mixed fuel 1-16. The results shown in the table are the average of three measurements.

 The measurement results are shown in Table 4 below.

表 4(续)

Table 4 (continued)

Table 4 (continued)

从表 4可以看出， 使用上述醚基燃料和混合燃料， 尾气排放污染物明显 低于我国的国家标准。

It can be seen from Table 4 that with the above ether-based fuels and mixed fuels, the tail gas emission pollutants are significantly lower than the national standards of China.

 The ether-based fuel of the present invention has the advantages of high octane number, increased power, low energy consumption, high cleanliness, good versatility, long shelf life, and wide source. Due to the high octane number, the ether-based fuel of the present invention is more suitable for a high compression ratio engine, thereby increasing the power. In general, the acid-based fuel of the present invention has a high octane number, and can be added to the composition to increase the calorific value component, and in the case of adaptive adjustment of the vehicle (reducing the intake air and adjusting the ignition advance angle), The consumption rate is reduced by 5%. When mixed with gasoline, the energy consumption rate is reduced by more than 10%. The ether-based fuel of the present invention is a high oxygen-containing fuel. Due to complete combustion, the pollutant emissions CO and CO2+HC of the automobile can be reduced by 50%-80%, and the carcinogen benzene and sulfur emission coefficient is zero. At the same time, it can effectively remove the carbon supply from the vehicle and the combustion system, and prolong the service life of the engine. The ether-based fuel of the invention has good versatility and can be directly used without changing the structure and parameters of the engine; and the inventors have found that under the condition of adjusting the small damper and adjusting the ignition advance angle, the engine power can be further improved and stabilized. run. Blended with gasoline in any ratio. The induction period of the acid-based fuel of the present invention is more than double that of the national standard gasoline. Long-term stable storage, which can extend the time required for storage, transportation, sales and use.

Claims

Rights request An ether-based fuel comprising diterpene, decyl alcohol and 2,6-di-tert-butyl-p-nonylphenol.  2. The ether-based fuel according to claim 1, wherein the content of dimethyl ether is 4 - 12 parts by weight based on 100 parts by weight of dimethyl ether and methanol, and the content of methanol is 88 - 96 parts by weight, 2,6-di unter The content of butyl p-nonylphenol is from 0.005 to 0.5 parts by weight.  3. The ether-based fuel according to claim 1, wherein the diterpene ether is contained in an amount of 5 - 9 parts by weight based on 100 parts by weight of the dimethyl ether and methanol, and the sterol content is 91 - 95 parts by weight, 2, 6 - 2 The content of tert-butyl-p-phenol is 0.01 to 0.1 part by weight.  The ether-based fuel according to any one of claims 1 to 3, wherein the ether-based fuel is composed of dimethyl ether, decyl alcohol and 2,6-di-tert-butyl-p-cresol.  5. The ether-based fuel of any of claims 1 - 4, wherein the acid-based fuel is an automotive fuel. 6. The ether-based fuel of any of claims 1 - 5, wherein the ether-based fuel is a gasoline engine fuel.  An acid-based fuel comprising dimethyl ether, methanol and 2,6-di-tert-butyl-p-cresol; the ether-based fuel further comprising at least one selected from the group consisting of water, castor oil and succinimide Additives.  The ether-based fuel according to claim 7, wherein the diterpene ether is contained in an amount of from 4 to 12 parts by weight based on 100 parts by weight of the dimethyl ether and methanol, and the methanol content is from 88 to 96 parts by weight, 2,6-di unter The butyl pair is expected to be present in an amount of from 0.005 to 0.5 parts by weight.  The ether-based fuel according to claim 8, wherein the content of the dimethyl ether is 5 - 9 parts by weight based on 100 parts by weight of dimethyl ether and methanol, and the content of decyl alcohol is 91 - 95 parts by weight, 2, 6 - 2 The content of tert-butyl-p-phenol is 0.01 to 0.1 part by weight.  The ether-based fuel according to any one of claims 7 to 9, wherein the additive is water, castor oil, succinimide, a combination of water and castor oil, a combination of water and succinimide, 蓖A combination of sesame oil and succinimide, or a combination of water, castor oil and succinimide.