Three-stage integrated treatment system and method for purification and regeneration of activated coke flue gas

Abstract

The invention discloses a three-stage integrated treatment system for purification and regeneration of activated coke flue gas, comprising a denitrification reaction tower, a desulfurization reaction tower and an activated coke regeneration tower. The denitrification reaction tower, the desulfurization reaction tower and the activated coke regeneration tower are vertically connected from top to bottom sequentially. The three-stage integrated treatment system for purification and regeneration of activated coke flue gas can finish the integrated process of flue gas purification and activated coke regeneration and sufficiently make a compromise on the secondary utilization of separated substances in the treatment process by artfully combining the denitrification reaction tower, the desulfurization reaction tower and the activated coke regeneration tower, and also feed materials by the dead weight of activated coke. The invention has the advantages of simple equipment, small occupied areaand low construction cost. In addition, the invention also discloses a three-stage integrated treatment method for purification and regeneration of activated coke flue gas.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a three-stage active coke flue gas purification and regeneration integrated treatment system and method. Background technique [0002] Activated coke flue gas desulfurization technology belongs to the dry recovery desulfurization process, which uses activated coke made of coal as a desulfurizer, and relies on activated coke to desulfurize SO 2 Adsorption and desorption complete the flue gas desulfurization cycle. Due to the broad-spectrum adsorption characteristics of activated coke, this technology can simultaneously remove a variety of harmful substances. It basically does not consume water in the desulfurization process, so there is no waste water and waste residue, and it has excellent environmental protection performance. The desulfurization product is high concentration SO 2 Gas, can produce sulfuric acid, sulfur, liquid SO 2 , fertilizers and other produc...

AI Technical Summary

Problems solved by technology

Adsorption of SO in flue gas by fixed-bed activated carbon (coke) 2 Due to many defects such as complex process, low strength of activated carbon and high price, it is only suitable for small-scale and low-concentration SO 2 Flue gas treatment

[0005] The active coke dry desulfurization system that has been applied at present is generally a split structure, and the desulfurization tower and the regeneration tower are installed separately, or the desulfurization tower and the regeneration tower are integrated (the denitrification section is not separately installed), which has a large area or no separate The denitrification section leads to defects such as low denitrification efficiency

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