Activated carbon/coke-based coke oven flue gas desulfurization and denitration system and activated carbon/coke-based coke oven flue gas desulfurization and denitration method

Abstract

The invention discloses an activated carbon / coke-based coke oven flue gas desulfurization and denitration system and an activated carbon / coke-based coke oven flue gas desulfurization and denitration method. The flue gas desulfurization and denitration system comprises an activated carbon / coke flue gas purification tower, an activated carbon / coke regeneration tower, a chimney, an ammonia water injection system and an absorption tower, wherein an activated carbon / coke conveyor is arranged between the purification tower and the regeneration tower; the regeneration tower is connected with a high temperature heating system and a regenerated gas pipeline; the ammonia water injection system comprises an ammonia water container; the ammonia water container is connected with a first ammonia water pipeline and a second ammonia water pipeline which are arranged in parallel; the first ammonia water pipeline and the second ammonia water pipeline are respectively communicated with the interiors of aflue gas inlet pipeline and the absorption tower; the bottom of the absorption tower is connected with an ammonium sulfate solution pipeline, and the top of the absorption tower is connected with a waste gas exhaust pipeline; the regenerated gas pipeline is communicated with the interior of the absorption tower; a purified gas exhaust pipeline and the waste gas exhaust pipeline are communicated with the chimney; the activated carbon / coke conveyor comprises an old material conveyor used for conveying activated carbon / coke at the bottom of the purification tower onto the top of the regenerationtower, and a new material conveyor used for conveying activated carbon / coke at the bottom of the regeneration tower onto the top of the purification tower.

Description

technical field [0001] The invention relates to a coke oven flue gas desulfurization and denitrification system and method based on activated carbon / coke, which mainly uses activated carbon / coke to purify coke oven chimney exhaust gas, and belongs to the technical field of air pollution prevention and control engineering. Background technique [0002] In recent years, my country's air pollution has become increasingly serious, and smog and haze have occurred frequently. Flue gas desulfurization and denitrification have become an important and increasingly urgent task in industrial and other fields. Air pollution problems represented by smog and acid rain have increasingly become the focus of people's attention. With the improvement of environmental standards, the development of iron and steel, non-ferrous metallurgy, coal-fired power generation, coking and other industries is facing heavy pressure. my country's air pollution situation has been significantly improved after k...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a coke oven flue gas desulfurization and denitrification system and method based on activated carbon / coke, so as to solve the technical problems of low denitrification efficiency of activated carbon and difficult treatment of desulfurization by-products in the prior art, so as to achieve more pollution of coke oven chimney exhaust gas The purpose of comprehensive treatment of waste, comprehensive utilization of by-product resources and stable emission of exhaust gas from coke oven chimneys

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