Chimney type desulfurization, denitrification and dust removal integrated device and working method thereof

Abstract

The invention relates to a chimney type desulfurization, denitrification and dust removal integrated device and a working method thereof. The device comprises a main treatment tower and a desulfurization and dust removal reactor, wherein the bottom of the main treatment tower is directly communicated with a coke oven main flue channel, a rainproof top cover is arranged above a top opening, the desulfurization and dust removal reactor is arranged on the outer side of the lower portion of the main treatment tower, a bottom interlayer plate, a lower interlayer plate, a denitration reducing agent spraying pipe, a foam metal uniform distribution layer, a denitration catalyst layer and a fan are sequentially arranged in the main treatment tower from bottom to top, a desulfurization and dust removal inlet is formed in the main treatment tower body below the bottom interlayer plate and is communicated with the desulfurization and dust removal reactor, a desulfurization and dust removal outlet is formed in the main treatment tower body above the lower interlayer plate and is communicated with the desulfurization and dust removal reacto, and the fan is arranged at the top opening of the main treatment tower. According to the invention, on the premise of meeting the flue gas treatment requirement, the process design is further optimized, the device is compact in structure, reliable in operation and small in occupied area, and the investment and operation cost of a coke oven flue gas purification treatment system can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of coke oven flue gas purification, in particular to a chimney-type desulfurization, denitrification and dust removal integrated device and a working method thereof. Background technique [0002] In the current metallurgical industry, the coke oven is one of the most serious air pollution equipment. Most coke ovens in my country are heated by coke oven gas, and their chimneys will emit a large amount of pollutants. The composition is complex, mainly containing nitrogen oxides (NO X ), sulfur dioxide (SO 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), hydrogen sulfide (H 2 S), hydrogen cyanide (HCN), residual ammonia, phenol, coal dust, tar, etc. In the face of increasingly severe environmental pressure, in recent years, my country has paid more and more attention to environmental pollution, and the requirements for flue gas emission and energy saving and consumption reduction have become more and more...

AI Technical Summary

Problems solved by technology

In the current coke oven flue gas desulfurization and denitrification process, due to the large amount of flue gas and many types of pollutants in the coke oven flue gas, there are generally problems such as many process links, large equipment occupation, and high investment. Therefore, the combined processing unit, Shortening the processing link and modular design are the main development directions

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