Method for controlling sulfur and nitrate from coke oven flue gas source

A coke oven and source technology, applied in the field of coking, can solve the problems of unsatisfactory control effect of sulfur content and nitrate content, pollution and other problems, and achieve the effect of direct control effect, obvious control effect and high treatment cost
CN112280570AInactive Publication Date: 2021-01-29TANGSHAN ZHONGRUN COAL CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TANGSHAN ZHONGRUN COAL CHEM CO LTD
Publication Date
2021-01-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for controlling sulfur and nitrate from a coke oven flue gas source, and belongs to the technical field of coking. The method for controlling sulfur and nitrate fromthe coke oven flue gas source comprises the steps of 1, desulfurization, specifically, desulfurizing recirculated coal gas by adopting PDS wet desulfurization, wherein the content of hydrogen sulfidein the desulfurized recirculated coal gas is 20mg / m<3>; and 2, denitration, specifically, adjusting the temperature of the coke oven according to the relationship between the state parameters of the coke oven and a preset value in the denitration step. According to the method for controlling sulfur and nitrate from the coke oven flue gas source, the sulfur content and the nitrate content are controlled from the coke oven flue gas source, and the control effect is good.
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Description

technical field

[0001] The invention belongs to the technical field of coking, and in particular relates to a method for controlling sulfur and nitrification at the source of coke oven flue gas. Background technique

[0002] Coke oven flue gas is the exhaust gas produced by the combustion of coke oven gas during the production of coke in the coke oven, among which sulfur dioxide and nitrogen oxides are gas components that are harmful to the atmosphere. Sulfur dioxide is produced by the combustion of sulfur-containing substances such as hydrogen sulfide in coke oven gas; nitrogen oxides are mainly thermal nitrogen oxides, which are exponentially proportional to the temperature of the combustion flame center.

[0003] The existing technology uses flue gas desulfurization and denitrification technology to control pollutants within the allowable range of the state, but its control effect on sulfur and nitrate content is not ideal, and it still causes relatively large pollution. ...

Claims

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