CN108165326A - Methanol-based fuel for a boiler - Google Patents

Abstract

The invention provides a methanol-based fuel for a boiler, which comprises the following raw materials, by weight, 60-90 parts of methanol, 5-30 parts of high-boiling-point aromatic solvent oil, 5-20 parts of biodiesel, 0-2 parts of a synergist, 0-2 parts of a phase separation inhibitor, 0-0.4 part of a combustion improver, 0-0.2 part of a detergent, 0-0.2 part of an oxygenating agent and 0-0.2 part of a corrosion inhibitor. The methanol-based boiler clean fuel has obvious economic value and environmental protection value. The methanol and derivatives thereof have the advantages of wide and easily available raw materials, low cost, environment-friendly use and considerable economical efficiency, not only reduces the influence on the environment, but also meets the requirement of government departments on clean heating, and is a realistic choice for transforming the traditional energy into new energy.

Description

Methanol-based fuel for a boiler

technical field

The invention belongs to the technical field of boiler fuels, in particular to a methanol-based fuel for boilers.

Background technique

Methanol-based fuel is a type of fuel mainly composed of methanol, supplemented by other substances or converted from methanol. With the tense energy situation in our country and the increasingly serious problem of air pollution, the government has issued a series of new policies requiring the banning of small coal-fired boilers below 10 steam tons in the urban-rural fringe areas of Beijing-Tianjin-Hebei and other suburban counties and towns. As a clean boiler fuel, methanol-based fuel has attracted the attention of various research institutions. Methanol-based fuel has a wide range of sources, and its price is much lower than that of natural gas, gasoline and diesel, and the pollutants produced during combustion are lower than those of coal-fired boilers, which meet the requirements of environmentally friendly fuels.

Methanol-based boiler fuel has developed in the field of boiler fuel due to its advantages of clean combustion, mature technology, suitable physical and chemical properties, and considerable economic benefits, but some defects have also been exposed in the actual application process. At present, the methanol-based fuels on the market generally have limitations such as low calorific value, chemical corrosion, and high cost. Moreover, the standardization construction related to methanol-based boiler fuels is seriously lagging behind, so the current methanol-based boiler fuel market is in a mixed situation.

Contents of the invention

In view of this, the present invention aims to provide a methanol-based fuel for boilers, which has the advantages of high calorific value, good stability, simple preparation, low cost, etc., and the exhaust gas after combustion meets the emission standards.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A methanol-based fuel for a boiler, comprising the following raw materials in parts by weight: 60-90 parts of methanol, 5-30 parts of high-boiling aromatic solvent oil, 5-20 parts of biodiesel, 0-2 parts of synergist, phase separation inhibitor 0-2 parts of agent, 0-0.4 parts of combustion enhancer, 0-0.2 parts of detergent, 0-0.2 parts of oxygen enhancer, 0-0.2 parts of corrosion inhibitor.

Preferably, it includes the following raw materials in parts by weight, 75-90 parts of methanol, 5-15 parts of high-boiling aromatic solvent oil, 5-10 parts of biodiesel, 0.2-0.7 parts of synergist, and 0.5-1.5 parts of phase separation inhibitor , 0.1-0.3 parts of combustion enhancer, 0.05-0.15 parts of detergent, 0.05-0.15 parts of oxygen enhancer, 0.05-0.15 parts of corrosion inhibitor.

Preferably, the high-boiling aromatic solvent oil is S1000 or S1500.

Preferably, the synergist is one or more of ethylene glycol methyl ether, methyl tert-butyl ether, and dimethoxymethane.

Preferably, the phase separation inhibitor is one or more of dodecyl alcohol, Tween, Span, and dodecylsulfonate.

Dodecyl alcohol is selected as a phase separation inhibitor to improve mutual solubility, prevent solution stratification, prolong storage time, and ensure fuel stability.

Preferably, the combustion accelerant is one or more of ferrocene, acetone, and methyl tert-butyl ketone.

Preferably, the detergent is succinimide.

Preferably, the oxygen-increasing agent is hydrogen peroxide.

Preferably, the corrosion inhibitor is fatty acid ammonium; preferably, the fatty acid ammonium is ammonium stearate.

The present invention also provides the application of the above-mentioned methanol-based fuel for boilers in boiler fuels.

The role of high-boiling aromatic solvent oil and biodiesel is to increase the calorific value of fuel; the role of phase separation inhibitors is to enhance the mutual solubility of fuels and increase the flash point of fuels; the role of industrial grade methanol is to reduce costs and improve fuel cleanliness; The role of the detergent is to promote catalytic combustion and clean the carbon deposits in the burner and nozzle; Oxygen content in fuel promotes full combustion of fuel.

Compared with the prior art, the boiler methanol-based fuel of the present invention has the following advantages:

Due to the optimized combination of methanol, high-boiling aromatic solvent oil, acetone, lauryl alcohol, succinimide and other components, the present invention makes the content of fuel components scientific and reasonable, and greatly improves the calorific value and cleanliness of alcohol-based fuels. It improves the fuel combustion performance and stability performance, and better solves the problems of incomplete combustion of boiler fuel, corrosion of the internal structure of the boiler, or blockage of fuel nozzles.

The raw material has low sulfur content and no particulate matter; the fuel has been tested by Inger Analytical Technology Service (Shanghai) Co., Ltd. The test results are: the sulfur content is 0.7mg/L, and the calorific value of the fuel is 5360KCal/kg; the laboratory test shows that The fuel alcohol content of the present invention is >70%, mechanical impurities <0.02%, density <0.83g/m ³ , formaldehyde emission concentration in tail gas is 0.7123mg/m ³ , nitrogen oxide emission concentration is 13.2mg/m ³ , Ringelmann The blackness is less than grade 1, and the COD value of the discharged condensed water is 76.92mg/L. The tail gas has almost zero sulfur dioxide emissions.

The fuel of the present invention complies with the technical requirements of the national standard "Alcohol-Based Liquid Fuel (GB16663-1996)", the tail gas discharged after combustion complies with the "Emission Standard of Boiler Air Pollutants (GB13271-2014)", and the waste water discharged after combustion complies with the "Comprehensive Discharge of Sewage Standard (GB8978-1996)". The cost of this fuel is equivalent to the price of pure methanol, and the calorific value is 1.15 times that of pure methanol, which is lower than the unit calorific value cost of other methanol-based fuels on the market.

Therefore, the methanol-based boiler clean fuel has significant economic value and environmental protection value. The raw materials of methanol and its derivatives are widely available and low in cost. The use of environmentally friendly and economical methanol-based boiler fuel not only reduces the impact on the environment, but also meets the government's requirements for clean heating. It is a traditional energy source. A realistic choice for the transition to new energy sources.

Detailed ways

Unless otherwise defined, the technical terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are conventional biochemical reagents; the experimental methods, unless otherwise specified, are conventional methods.

The present invention will be described in detail below in conjunction with examples.

The preparation method of the methanol-based fuel for boilers in the present invention comprises: methanol, high-boiling aromatic hydrocarbon solvent oil, synergist, phase separation inhibitor, combustion aid, detergent, oxygen enhancer and corrosion inhibitor. Add it into the blending tank according to the stated ratio, stir, and mix evenly.

Example 1

A methanol-based fuel for a boiler, consisting of the following raw materials in parts by weight: 80 parts of methanol, 10 parts of S-1000 high-boiling aromatic solvent oil, 8 parts of biodiesel, 1 part of dodecyl alcohol, 0.5 parts of ethylene glycol methyl ether, 0.2 part of ferrocene, 0.1 part of succinimide, 0.1 part of hydrogen peroxide, and 0.1 part of ammonium stearate.

Example 2

A methanol-based fuel for boilers, consisting of the following raw materials in parts by weight: 80 parts of methanol, 10 parts of S-1500 high-boiling aromatic solvent oil, 8 parts of biodiesel, 1 part of dodecyl alcohol, and 0.5 parts of ethylene glycol methyl ether , 0.2 parts of ferrocene, 0.1 parts of succinimide, 0.1 parts of hydrogen peroxide, and 0.1 parts of ammonium stearate.

Example 3

A methanol-based fuel for boilers, consisting of the following raw materials in parts by weight: 88 parts of methanol, 5 parts of biodiesel, 5 parts of S-1500 high-boiling aromatic solvent oil, 1 part of dodecyl alcohol, and 0.5 parts of ethylene glycol methyl ether , 0.2 parts of acetone, 0.1 parts of succinimide, 0.1 parts of hydrogen peroxide, and 0.1 parts of ammonium stearate.

Example 4

A methanol-based fuel for boilers, consisting of the following raw materials in parts by weight: 88 parts of methanol, 5 parts of biodiesel, 5 parts of S-1500 high-boiling aromatic solvent oil, 1 part of dodecyl alcohol, and 0.5 parts of dimethoxymethane , 0.2 parts of ferrocene, 0.1 parts of succinimide, 0.1 parts of hydrogen peroxide, and 0.1 parts of ammonium stearate.

Example 5

A methanol-based fuel for a boiler is composed of the following raw materials in parts by weight: 85 parts of methanol, 9 parts of biodiesel, 5 parts of S-1500 high-boiling-point aromatic hydrocarbon solvent oil, and 1 part of dodecanol.

The methanol-based fuel described in Examples 1 to 5 is detected, and the results are as follows:

As can be seen from the above table, each performance index of the present invention is qualified.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of boiler methanol-based fuel, it is characterised in that：Include the raw material of following parts by weight, 60-90 parts of methanol, height boiling 5-30 parts of aromatic solvent naphtha of point, 5-20 parts of biodiesel, 0-2 parts of synergist, 0-2 parts of phase separation inhibitor, combustion adjuvant 0-0.4 Part, 0-0.2 parts of detersive, 0-0.2 parts of oxygenation agent, 0-0.2 parts of corrosion inhibitor.

2. boiler according to claim 1 methanol-based fuel, it is characterised in that：Include the raw material of following parts by weight, 75-90 parts of methanol, 5-15 parts of high boiling aromatic hydrocarbon solvent oil, 5-10 parts of biodiesel, 0.2-0.7 parts of synergist, phase separation inhibit 0.5-1.5 parts of agent, combustion adjuvant 0.1-0.3,0.05-0.15 parts of detersive, 0.05-0.15 parts of oxygenation agent, corrosion inhibitor 0.05- 0.15 part.

3. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The high boiling aromatic hydrocarbon solvent Oil is S1000 or S1500.

4. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The synergist is ethylene glycol One or more of methyl ether, methyl tertiary butyl ether(MTBE), dimethoxymethane.

5. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The phase separation inhibitor is One or more of lauryl alcohol, tween, Span, dodecane sulfonate.

6. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The combustion adjuvant for ferrocene, One or more of acetone, methyl-tert .- butyl ketone.

7. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The detersive is succinyl Imines.

8. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The oxygenation agent is hydrogen peroxide.

9. boiler according to claim 1 or 2 methanol-based fuel, it is characterised in that：The corrosion inhibitor is fat Fat acid ammonium；Preferably, aliphatic acid ammonium is ammonium stearate.

10. such as application of claim 1~9 any one of them boiler with methanol-based fuel in boiler oil.