TWI686468B - Waste resource recycling method - Google Patents

Abstract

The invention discloses a method for recycling waste resources, which includes a waste collection step, a high temperature and high pressure liquefaction hydrolysis treatment step, and a regeneration fuel drying step. The required waste can be collected by the previous steps, and the waste can be put into a device tank, and the waste can be liquefied and hydrolyzed into a liquid regenerated fuel (RDF-6) in the subcritical water environment, and then the regenerated fuel (RDF -6) Perform the drying procedure and add the activator by spraying to obtain high-quality solid regenerated fuel (RDF-5).

Description

Waste resource recycling method

The invention relates to a method for recycling waste resources, especially a method for recycling waste and forming high-quality renewable resources.

According to the fact, due to rapid economic development, over-exploitation of resources leads to increasing waste. In addition to actively promoting the reduction of sources, of course, the waste response should of course be dedicated to the reuse of waste. It is hoped that through proper disposal technology, waste reduction can be achieved The purpose of output. At present, solid waste treatment methods include landfill, incineration, pyrolysis, cooking and disinfection; among them, landfill or incineration treatment will pollute the atmosphere and groundwater, and will also produce carcinogens; and other such as pyrolysis, cooking Treatment, it is difficult to destroy the solids, and it is also difficult to recycle. In addition, pyrolysis will produce emissions of harsh gases such as carbon dioxide, dioxin, etc. In addition to odor, this technology should be improved in the current severe environmental damage such as suspended particles and global warming.

In addition, waste reprocessing is used to make coal-burning means. Since coal-burning will generate heat in the weathering process, it will strengthen water control during coal storage. However, because the water content is too high, many Controlling the added activator to lose its catalytic effect is also the main cause of the pollution and emission reduction of the combustion furnace the reason.

Therefore, it is necessary to provide a method to improve the efficiency of waste recycling, and then solve the problems in the conventional technology.

The purpose of the present invention is to produce high-quality recycled fuel.

To achieve the above objective, the present invention provides a method including a waste collection step, a high temperature and high pressure liquefaction hydrolysis treatment step, and a regeneration fuel drying step. The required waste can be collected by the previous steps, and the waste can be put into a device tank to liquefy and hydrolyze the waste into liquid renewable fuel (Refuse Derived Fuel (RDF-6) for short) in the subcritical water environment. The liquid regenerated fuel (RDF-6) undergoes a drying process and an activator is added, thereby obtaining a high-quality solid regenerated fuel (RDF-5).

The wastes are domestic garbage, household food waste, poultry excrement, animal carcasses, infectious medical garbage, organic sludge and waste plastics.

10: Waste collection steps

11: Waste

20: High temperature and high pressure liquefaction hydrolysis treatment steps

21: Device slot

22: Liquid Renewable Fuel (RDF-6)

30: Renewable fuel drying step

31: Solid Recycled Fuel (RDF-5)

The first figure is a schematic structural diagram of an embodiment of the present invention; the second figure is a schematic structural diagram of a device tank in the high-temperature and high-pressure liquefaction hydrolysis step of the present invention; the third figure is a high-temperature and high-pressure liquefaction hydrolysis step of the present invention Schematic diagram of the temperature and pressure diagram in the device tank in.

The technical contents and functions described in the present invention will be clearly presented in the detailed description of the preferred embodiment shown in the drawings. another In addition, before the present invention is described in detail, it needs special explanation. The accompanying drawings are explained in a schematic manner. Therefore, only the steps or elements related to the present invention are shown in the drawings, which will be described in advance.

The structure of the present invention and the achievable effects thereof are explained in conjunction with the drawings as follows: please refer to the structure diagram of the embodiment of the present invention shown in the first figure. As shown in the figure, the present invention includes a waste collection step 10, a high-temperature and high-pressure liquefaction and hydrolysis treatment step 20, and a regenerated fuel drying step 30; wherein: the waste collection step 10, which collects household waste, household food waste, and poultry waste , Animal carcasses (such as sick pigs, sick poultry, etc.), infectious medical waste, organic sludge, waste plastics and other wastes11.

In the high-temperature and high-pressure liquefaction and hydrolysis treatment step 20, the waste 11 collected in the waste collection step 10 is thrown into a device tank 21 (as shown in the second figure). The device tank 21 creates a high temperature and high pressure that imitates the principle of generating crude oil and coal in nature Environment, heat the water above the boiling point and below the critical point, and control the pressure to keep the water in a liquid state (also known as subcritical water). The temperature of the water in the device tank 21 is 200℃~230℃, and the pressure is 2MPa~3MPa (As shown in the third figure), under this condition, water is a polar compound, which can liquefy the solute from low to high liquefaction; under the conditions of temperature and pressure control, the aforementioned waste 11 can be generated Hydrolysis, the product of which the dissolved organic matter is hydrolyzed is Refuse Derived Fuel (RDF-6)22. It is worth mentioning that the high-temperature and high-pressure liquefaction treatment step 20 mainly controls the dielectric constant of water by adjusting the temperature and pressure. Therefore, the high-temperature and high-pressure treatment technology that does not use acids or alkalis is extremely environmentally friendly. In addition, compared to other waste In terms of time course, the hydrolysis time of the high temperature and high pressure liquefaction hydrolysis step 20 is short, so it has the advantage of optimizing productivity.

In the regenerated fuel drying step 30, the liquid regenerated fuel (RDF-6) 22 obtained in the high-temperature and high-pressure liquefaction and hydrolysis treatment step 20 is subjected to a drying process, so that when the weight of the water content of the regenerated fuel 22 is 20% to 5%, it is sprayed Activator is added in a manner to obtain solid regenerated fuel (RDF-5) 31 The activator contains at least oxidants such as titanium dioxide (TiO2), zirconium oxide (ZrO2), niobium pentoxide (Nb2O5), etc., and the particle size of the activator component is between 10 nm and 100 nm, so that it acts on liquid renewable fuel (RDF-6) At 22 o'clock, a large contact area is formed, and each grain is a single magnetic structure and exhibits a superparamagnetic state. Therefore, the generated nanomagnetic is strong and has a high adsorption force, which is not easy to use. RDF-6) 22 evaporates water.

According to the expression of the above method, the waste collection step 10, the high temperature and high pressure liquefaction hydrolysis step 20 and the regenerated fuel drying step 30 can obtain a regenerated fuel product, and those who use the method of the present invention and the finished product have the following gains:

1. The whole process has no air pollution, no waste water, no dioxin production, and the device tank 21 in the high temperature and high pressure liquefaction hydrolysis step 20 is a sealed structure, and there is no odor in the process, which is a green and environmentally friendly waste regeneration method.

2. The high-temperature and high-pressure liquefaction and hydrolysis treatment step has a short time of 20, generally about 2 to 2.5 hours per batch, which has the advantage of optimizing production capacity.

3. When the solid regenerated fuel (RDF-5) 31 is used in a boiler, it can be used for heating, gas supply, power supply, reducing air pollution, reducing the production of fly ash and bottom slag, and the generated fly ash and bottom slag are available for Used again in the building materials industry or in the concrete plant.

4. When the solid regenerated fuel (RDF-5) 31 is used, it can increase the adsorption of oxygen, so that the carbon particles are fully burned, and can produce powerful far-infrared radiant heat during combustion, thereby increasing the combustion temperature and reducing the amount of fuel used.

5. The activator added in the regeneration fuel drying step 30 has excellent hydrophilicity, is not afraid of moisture, has good temperature resistance, and has no special requirements for the storage environment.

It should be particularly noted that there are many types of wastes described in the method of the present invention, and they are not limited to uncovered wastes.

From the above, it can be seen that the method of the present invention is applied to the production of renewable fuel, has obvious and high industrial applicability, effectively solves the problem of waste and provides efficient fuel. In addition, through the above disclosure or deliberation, many changes and amendments can be derived, which can still be regarded as equivalent changes of the present invention, and the effect produced by it still does not exceed the essential spirit covered by the description and drawings. It is considered to be within the technical scope of the present invention.

Based on the detailed description of the above preferred specific embodiments, it is hoped that the features of the present invention can be clearly described, rather than limiting the present invention with the embodiments disclosed above. On the contrary, its purpose is to cover all kinds of equal changes; therefore, the present invention has many advantages and has significant practical characteristics, and the technical means and structural features used by it are indeed developed by the inventor of the present case. As a result, this manufacturing method is unprecedented in the market. Since the invention has already met the requirements of the patent, he has filed an application in accordance with the law and prayed for the patent right.

10: Waste collection steps

11: Waste

20: High temperature and high pressure liquefaction hydrolysis treatment steps

21: Device slot

22: Liquid Renewable Fuel (RDF-6)

30: Renewable fuel drying step

31: Solid Recycled Fuel (RDF-5)

Claims (6)

A waste resource recycling method includes a waste collection step, a high temperature and high pressure liquefaction hydrolysis step, and a regeneration fuel drying step; the waste collection step is to collect the required waste; the high temperature and high pressure liquefaction hydrolysis step is to collect the discarded waste The material is put into a device tank, which hydrolyzes the waste into renewable fuel Refuse Derived Fuel (referred to as RDF-6) in a subcritical water environment; this regenerated fuel drying step dries the liquid regenerated fuel (RDF-6) The procedure is to add an activator when the water content of the liquid regenerated fuel (RDF-5) remains a predetermined amount, and then obtain a solid regenerated fuel (RDF-5), the activator contains at least titanium dioxide (TiO2), zirconium oxide (ZrO2) , The oxide of niobium pentoxide (Nb2O5). The waste resource recycling method as described in item 1 of the patent application scope, wherein the wastes in the waste collection step are: household garbage, household food waste, poultry waste, animal carcasses, infectious medical waste, organic waste Mud, waste plastic. The waste resource recycling method as described in item 1 of the patent application scope, wherein the drying procedure performed in the drying step of the regenerated fuel is to dry the liquid regenerated fuel (RDF-6) to the remaining 20% by weight of the moisture content At ~5%, add activator by spraying. The method for recycling waste resources as described in item 1 of the patent application scope, wherein in the step of drying the recycled fuel, the particle size of the activator component is between 10 nm and 100 nm. The method for recycling waste resources as described in item 1 of the patent application scope, wherein the temperature of the water in the tank of the device is between 200°C and 230°C. The waste resource recycling method as described in item 1 of the patent application scope, wherein the pressure in the tank of the device is 2MPa~3MPa.

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