Novel catalytic desulfurization apparatus and technology aiming at coke oven flue gas

Abstract

A novel catalytic desulfurization apparatus and technology aiming at coke oven flue gas, relating to the field of coke oven flue gas purification. By using water, oxygen, SO2 and heat in flue gas, sulfuric acid in certain concentration is produced. The key of the technology is the catalyst being different from conventional desulfurization active coke and active carbon, the catalyst is a desulfurizer prepared by supporting a certain active component on a carbon material being a supporter, so that the desulfurizer has catalytic effect on the SO2 oxidization to produce acid process. The desulfurizer has adsorption function and certain storage capacity of the sulfuric acid; what is more, the desulfurizer has the catalytic effect so as to make the desulfurization process to become a sulfuric acid production process. The novel catalyst is easy to regenerate without heating and consumption of large quantity of fuel. The catalyst can be regenerated just through water washing.

Description

technical field [0001] The invention relates to the technical field of coke oven flue gas purification, in particular to a novel catalytic desulfurization device and process for coke oven flue gas, that is, through the catalytic desulfurization system and process, it is suitable for desulfurization of coke oven flue gas to remove flue gas SO in 2 As well as the free water and part of the water vapor carried in the flue gas, and produce a certain concentration of sulfuric acid. Background technique [0002] Coke oven is one of the most serious air pollution equipment in the metallurgical industry. The components of pollutants emitted by coke ovens are complex, including nitrogen oxides (NOx), sulfur dioxide, carbon monoxide, carbon dioxide, hydrogen sulfide, hydrogen cyanide, residual ammonia, phenol, coal dust, tar, etc. These pollutants have aggravated the smog degree of pollution. [0003] In recent years, smog has frequently appeared in most parts of our country. The c...

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Problems solved by technology

At present, coke oven flue gas desulfurization has not yet formed a mainstream process. Some of them adopt activated carbon and activated coke desulfurization process, which can meet the emission requirements, but the regeneration of activated carbon and activated coke is very troublesome, and high temperature heating is required to release active sites. A large amount of fuel will cause great damage to activated carbon and activated coke

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