Plasma fluidized bed type self-maintaining catalytic combustion converter coal gas releasing method and device

Abstract

The invention relates to a plasma fluidized bed type self-maintaining catalytic combustion converter coal gas releasing method and a plasma fluidized bed type self-maintaining catalytic combustion converter coal gas releasing device. The plasma fluidized bed type self-maintaining catalytic combustion converter coal gas releasing method includes: mixing coal gas released from a converter accordingto a preset proportion, and injecting the coal gas into a plasma reactor carrying a catalyst; injecting the reactant gas into the plasma reactor according to preset flow speed so as to enable the catalyst to present a uniform fluidized state; applying preset voltage to the plasma reactor, and performing plasma CO catalytic combustion reaction; achieving plasma CO self-maintaining catalytic combustion under dual action of plasma discharge reaction and heat catalytic reaction.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of catalytic combustion and pollutant control, in particular to a method and device for releasing gas from a plasma fluidized bed self-sustaining catalytic combustion converter. Background technique [0002] At present, most of the domestic steel industry adopts the converter steelmaking process. The converter is the core process of steelmaking. It intermittently produces high-temperature gas (about 120-160m3 / t steel) containing high-concentration CO and a small amount of CO2, O2, and N2. The value can reach 6-8MJ / Nm3, so gas recovery is an effective way to achieve energy saving and emission reduction in the iron and steel industry. However, the periodicity of converter steelmaking production leads to intermittent and fluctuating changes in the amount of gas and its component concentrations. In the early and late stages of blowing, the oxygen content of part of the gas is too high t...

AI Technical Summary

Problems solved by technology

[0004] However, there is no report on low-temperature plasma synergistic catalysis to achieve self-sustained catalytic combustion of converter gas in a fluidized form. The low-temperature and high-efficiency catalytic combustion of diffused gas provides a new device, and also provides a breakthrough key innovation technology for the upgrading of my country's iron and steel industry, which is of great significance to the realization of the goal of winning the blue sky defense war

Images