High-temperature gas filtration method and system

Abstract

The invention relates to a filtration and purification method and system, in particular to an oxygen supply filtration and purification method and system for high-temperature gas. The high-temperature gas filtration method is disclosed in order to solve the problems of low heat transfer efficiency and non-uniform heating caused by a small heat transfer area due to the fact that a high-temperature heat tracing mode adopts partition heat transfer in conventional high-temperature gas filtration. The high-temperature gas filtration method comprises steps as follows: the high-temperature gas is introduced into a high-temperature gas filter for gas-solid separation and purification operation, before the gas-solid separation and purification operation of the high-temperature gas, an oxygen source is injected into the high-temperature gas, oxygen in the oxygen source and a combustible medium in the high-temperature gas have an exothermic reaction, and then the heated high-temperature gas is subjected to the gas-solid separation and purification. The heat transfer efficiency reaches 100%, the heating effect is uniform, the condition of a dead angle is avoided, and the heat transfer efficiency is high.

Description

technical field [0001] The invention relates to a filtering method and device, in particular to a high-temperature gas filtering method and system. Background technique [0002] Coal chemical industry refers to the process of using coal as raw material and converting coal into gas, liquid and solid fuels and chemicals through chemical processing. It mainly includes coal gasification, liquefaction, dry distillation, tar processing and calcium carbide acetylene chemical industry. [0003] Coal gasification plays an important role in the coal chemical industry and is used to produce various gas fuels. The synthesis gas produced by coal gasification is the raw material for the synthesis of liquid fuels, chemical raw materials and other products. [0004] In the coal chemical industry, the high-temperature gas produced in the production process of lignite gas, coal oil, coal gas, etc. needs to be filtered and purified to recover and use high-temperature waste heat. Therefore, th...

AI Technical Summary

Problems solved by technology

[0006] The current high-temperature heat tracing method uses partition heat transfer, which results in low heat transfer efficiency, uneven heating, high operating costs, high equipment investment, and large floor area due to the small heat transfer area.

Images