Method for continuous industrial production of coal gas by multi-chamber microwave heating

The technology of microwave heating and microwave heating device is applied in the field of continuous industrial gas production, which can solve the problems of high gas purification cost, complex production equipment and high raw material requirements, and achieves controllable gas composition, pure gas, and elimination of purification process. Effect

Inactive Publication Date: 2012-07-18
王俊
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to overcome the deficiencies of the existing industrial gas production technology, such as high raw material requirements, complex production equipment, complicated gas components, high purification costs, and large oxygen consumption, the present invention provides a new multi-compartment microwave heating continuous industrial production process. Coal gas method, which can achieve low raw material requirements, simple and easy-to-operate equipment, continuous production of pure gas, and precise control of gas components

Method used

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  • Method for continuous industrial production of coal gas by multi-chamber microwave heating
  • Method for continuous industrial production of coal gas by multi-chamber microwave heating

Examples

Experimental program
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Effect test

Embodiment 1

[0048] See figure 1 , 1 is the pulverized coal silo, which contains pulverized coal 2 mixed with desulfurization agent, adjust the speed of the frequency conversion speed regulation motor 3 to 600 rpm and drive the raw material screw pushing device 4 to rotate to push the pulverized coal 2 into the pulverized coal pyrolysis Bin 5; Microwave heating device 6 injects microwaves into coal powder pyrolysis bin 5. By adjusting the power of microwave heating device 6 to 4KW and controlling the maximum heating temperature to 480°C, pulverized coal 2 can be quickly and uniformly heated by absorbing microwaves. Pyrolysis produces CO, CH 4 and gasification tar, etc., the pyrolysis gas rises into the pyrolysis gas collection pipeline 7 and finally enters the steam secondary heating device 11 to participate in the combustion reaction; the high-pressure fan 8 supplies cold air to the air preheating device 9, Heat exchange is carried out through the warehouse wall, and the cold air cools t...

Embodiment 2

[0050] Such as figure 1 As shown, 1 is the pulverized coal silo, which contains pulverized coal 2 mixed with desulfurizer, adjust the speed of the frequency conversion speed regulating motor 3 to 800 rpm and drive the raw material screw pushing device 4 to rotate to push the pulverized coal 2 into the pulverized coal Pyrolysis bin 5; microwave heating device 6 injects microwaves into coal powder pyrolysis bin 5, by adjusting the power of microwave heating device 6 to 6KW, controlling the maximum heating temperature to 470°C, the microwave energy absorbed by pulverized coal 2 can be quickly and evenly Heating, pyrolyzing CO, CH 4 and gasification tar, etc., the pyrolysis gas rises into the pyrolysis gas collection pipeline 7 and finally enters the steam secondary heating device 11 to participate in the combustion reaction; the high-pressure fan 8 supplies cold air to the air preheating device 9, Heat exchange is carried out through the warehouse wall, and the cold air cools th...

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Abstract

The invention relates to a method for continuous industrial production of coal gas by multi-chamber microwave heating. Pyrolysis chambers and gasification chambers are separated to be independent chambers, each gasification chamber is provided and connected with at least one pyrolysis chamber, and the pyrolysis chambers and the gasification chambers produce pyrolytic coal gas and gasified coal gas; the heat energy required by reactions of the pyrolysis chambers and the gasification chambers is provided by microwave energy, and the microwave power is adjustable; a raw material pushing device used in the production process comprises a semi-coke pushing device, a coal ash delivering device, a coal ash pushing device, all adopting a spiral pushing structure; the spiral pushing devices adopt speed control by frequency variation, and controls the entire reaction progress and reaction speed; and pyrolytic coal gas is used for conducting secondary heating of water vapor, and the water vapor is reheated to a temperature higher than 600 DEG C. The method provided by the invention can realize low requirements on raw materials, simple equipment, easiness in operation, continuous production of pure coal gas, and accuracy in control of coal gas components.

Description

technical field [0001] The invention belongs to the technical field of a continuous industrial gas production method. Background technique [0002] At present, the known coal gas production methods include fixed bed method, fluidized bed method, and entrained bed method. The principle is to burn rich fuel in the gasifier, and at the same time supply gasification agent to make gas, and the high temperature obtained by burning fuel Maintain the progress of the gasification reaction. The main problem that this existing production gas method exists is: [0003] 1) The produced gas contains a high proportion of CO, H 2 A relatively low proportion of CO 2 The ratio is relatively high and there are many impurities. [0004] 2) Fixed bed and fluidized bed gasifiers have higher requirements on the composition of raw coal, which require low sulfur, low volatile content and high ash melting point. [0005] 3) The fixed bed gasifier has high requirements on the physical properties ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/66
Inventor 王俊
Owner 王俊
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