Adsorption tower for preventing dust from accumulating in air chambers and method for treating flue gas by utilizing adsorption tower

Abstract

The invention belongs to the field of chemical engineering and discloses an adsorption tower for preventing dust from accumulating in air chambers and a method for treating flue gas by utilizing the adsorption tower. According to the adsorption tower, inclined bottom plates are arranged at the bottoms of all the air chambers; fluidization air distribution pipes are used on the inclined bottom plates in a matched mode, so that dust accumulation and caking at the bottoms of all the air chambers are avoided, and the purification effect of the adsorption tower is guaranteed. According to the adsorption tower for preventing dust from accumulating in the air chambers, the inclination angles of the inclined bottom plates are greater than the angles of corresponding distribution grids; and the distance between the distribution grids is large; and therefore, part of particles and part of crushed active coke fine powder in raw flue gas are deposited on the bottom inclined plates and then enter the active coke bed layer of the adsorption tower from the bottoms of the distribution grids after being loosened by fluidization air on the bottom plates, and dust accumulation in corresponding areascan be effectively prevented.

Description

technical field [0001] The invention belongs to the field of chemical industry, and more specifically relates to an adsorption tower for preventing dust accumulation in a gas chamber and a method for treating flue gas by using the adsorption tower. Background technique [0002] The activated coke dry flue gas purification process began to be applied industrially in the 1980s. With the increasing environmental protection requirements, the activated coke dry flue gas purification process has outstanding advantages such as high desulfurization efficiency, simultaneous removal of multiple pollutants, no water consumption for reaction, no waste water and waste residue discharge, and no corrosion problems for system equipment. More and more attention is being paid to it, and its application is becoming more and more extensive. [0003] The reason why activated coke has the functions of desulfurization, denitrification, dust removal and simultaneous removal of various pollutants i...

AI Technical Summary

Problems solved by technology

As the operation continues, the agglomeration of the bottom area of ​​the gas chamber continues to increase, which may lead to a continuous reduction in the area where the flue gas traverses the active coke bed and may prevent the flue gas from reaching the distribution grid at the bottom of the active coke bed. area, which affects the purification effect of the adsorption tower

In addition, during the operation, since the gap between the grids on both sides of the active coke bed is much larger than that of the active coke, a small amount of active coke may fall out of the grids on both sides of the bed during the movement of the active coke. In the bottom area of ​​the air chamber, because the bottom is a flat bottom structure, the active coke cannot be discharged in time in this area, and the active coke may deposit particles together, which will accelerate the agglomeration speed in this area

Moreover, because the activated coke fine powder contains adsorbed sulfuric acid, the agglomerated area may also corrode the bottom wall under the action of water vapor in the flue gas

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