Method for preparing industrial fuel gas through pyrolysis treatment of garbage

A technology of industrial gas and pyrolysis gas, applied in the direction of granular/powdered fuel gasification, gas dedusting, etc., can solve the problems of process equipment that cannot be made into a large scale, complex requirements for waste treatment systems, and low waste treatment efficiency. Achieve the effects of solving excessive water content of garbage and harmless treatment of permeate, improving comprehensive utilization rate and avoiding secondary pollution

Active Publication Date: 2014-10-22
六盘水钟山区民富砖厂
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Neither the incineration method nor the land burial method makes use of the comprehensive treatment of waste, and it will also cause secondary pollution to the environment; while the plasma pyrolysis method provides a new idea for the utilization of waste, but this method is very expensive due to the cost of the process. High, the requirements for the waste treatment system are complicated, and it is impossible to make large-scale process equipment, which leads to low efficiency of waste treatment, and pyrolysis itself is an endothermic process, which requires a lot of energy to complete the process. comprehensive treatment of

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  • Method for preparing industrial fuel gas through pyrolysis treatment of garbage

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Embodiment 1

[0023] After the garbage is sorted by the sorting machine, it enters the pulverizer for crushing treatment, and then transfers to the dryer for drying treatment. Pyrolysis and gasification process; the pyrolysis furnace is equipped with a circulating fluidized bed and an entrained flow bed. After the garbage enters, it is quickly mixed with the hot ash and high-temperature gas that circulates and rises. Chlorine, which eliminates tar, phenol, and light oil produced by rapid pyrolysis of garbage after heating; coarse particles fall into the bottom of the furnace, undergo gas-solid mass transfer and heat transfer in the pyrolysis furnace, and undergo a chemical reaction at a temperature of 950°C to form CO, H 2 , CO 2 Mixed gas; and by melting the fly ash at a temperature of 1500°C, the fly ash will fall into the bed material at the bottom of the pyrolysis furnace in the form of liquid, exchange heat with the bed material and cool down to become glassy slag, and pass through th...

Embodiment 2

[0025] After the garbage is sorted by the magnetic separator, it enters the pulverizer for crushing treatment, and then transfers to the tumble dryer for drying treatment, and the pulverized garbage and heat carrier are added to the pyrolysis furnace through the screw feeder To carry out the pyrolysis and gasification process; the pyrolysis furnace is equipped with a circulating fluidized bed and an entrained flow bed. After the garbage enters, it is quickly mixed with the hot ash and high-temperature gas that circulates and rises. The fine particles flow upward and are pyrolyzed at a temperature of 700°C. and dechlorination, eliminating tar, phenol, and light oil generated by rapid pyrolysis of garbage after heating; coarse particles fall into the bottom of the furnace, and undergo gas-solid mass transfer and heat transfer in the pyrolysis furnace and chemical reactions occur at a temperature of 900 °C , producing CO, H 2 , CO 2 Mixed gas; and by melting the fly ash at a tem...

Embodiment 3

[0027]After the garbage is sorted by the sorting machine, it enters the pulverizer for crushing treatment, and then transfers to the dryer for drying treatment. During the pyrolysis and gasification process, the pyrolysis furnace is equipped with a circulating fluidized bed and an entrained flow bed. After the garbage enters, it is quickly mixed with the hot ash and high-temperature gas that circulates and rises, and the fine particles flow upward. Chlorine, which eliminates tar, phenol, and light oil produced by rapid pyrolysis of garbage after heating; coarse particles fall into the bottom of the furnace, undergo gas-solid mass transfer and heat transfer in the pyrolysis furnace, and undergo a chemical reaction at a temperature of 1000 ° C to form CO, H 2 , CO 2 Mixed gas; and by melting the fly ash at a temperature of 1800°C, the fly ash will fall into the bed material at the bottom of the pyrolysis furnace in the form of liquid, and exchange heat with the bed material to ...

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Abstract

The invention relates to garbage disposal, specifically to a method for preparing industrial fuel gas through pyrolysis treatment of garbage. The method comprises the following steps: sorting; crushing; drying; pyrolysis; and gasification. Sorting refers to sorting of garbage by using a magnet separator. Crushing refers to crushing of the garbage sorted by the magnet separator. Drying refers to heat exchange between the crushed garbage and pyrolysis gas in a roller dryer. In the steps of pyrolysis and gasification, fly ash is subjected to melting. Pyrolysis gas and the garbage are subjected to heat exchange in the dryer at the same time, so energy consumption of garbage disposal is reduced; through arrangement of an entrained-flow bed and a circulating fluidized bed in one pyrolyzing furnace equipment, hierarchical pyrolysis and gasification of the garbage are realized; through arrangement of a hierarchical separator, entrained semi-coke with different granularity enters different bed layers, so different chemical reactions in different environments are carried out, and thus, the garbage is fully decomposed into industrial fuel gas and the comprehensive utilization rate of the garbage is increased.

Description

technical field [0001] The invention relates to garbage treatment technology, in particular to a method for producing industrial gas by pyrolysis treatment of garbage. Background technique [0002] Pyrolysis, English "pyrolysis", also known as dry distillation in industry, is to decompose organic matter into oil, hydrogen, carbon monoxide, methane and carbon black and other products after heating in an oxygen-free or oxygen-deficient environment. Process; pyrolysis treatment of garbage, using the thermal instability of organic matter in the garbage, in an oxygen-deficient or anaerobic environment, it is heated and distilled to crack, and various gases, liquids or solids are formed after cooling , and then the process of extracting the product from it. [0003] With the development of society, the amount of garbage continues to increase. At present, the number and types of garbage are very large, which has a great impact on the environment. At the same time, the society also...

Claims

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Application Information

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IPC IPC(8): C10J3/46C10J3/54C10K1/02
Inventor 周维本
Owner 六盘水钟山区民富砖厂
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