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

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 ...

AI Technical Summary

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

Images