Wet method flue gas-desulfurizing absorption tower with dual speed sprinkling and desulfurizing absorption method thereof

Abstract

The invention relates to a dual-speed spray smoke wet desulfuration adsorption tower and relative desulfuration adsorption method. Wherein, the middle of tower is connected to the purified smoke outlet tube; the outlet of said tube is mounted with a defroster; the top of tower is connected to the former smoke inlet tube; the bottom of tower is a slurry tank; the middle of tower is a desulfuration reaction section; the inlet of the connection between the former smoke inlet tube and the top part of tower is mounted with the first-stage spray device; the purified smoke outlet tube at the middle of tower is mounted with the second-stage spray device; said two spray devices are individually through to the limestone slurry cycle pump outside the adsorption tower and the slurry tank at the bottom of adsorption; the slurry tank is inserted with forced oxygenation air tube and the mixing oar; the bottom of tower is connected to the gesso outlet pump via the gesso outlet tube. The invention can effectively utilize the space at the inlet of adsorption tower; increase the area of first-stage adsorption reaction section to react the smoke with the slurry in two different flow speed; therefore, the smoke can react with the slurry concurrent or reversed to strengthen the reaction effect, with saved energy and improved desulfuration efficiency.

Description

(1) Technical field

[0001] The invention relates to a flue gas wet desulfurization device and method. (two), background technology

[0002] The principle of the existing flue gas wet desulfurization is to use limestone slurry to react with sulfur dioxide in the flue gas to convert sulfur dioxide into gypsum to achieve the purpose of removing sulfur dioxide in the flue gas. The principle is as follows:

[0003] Neutralization reaction: <chemistry num="001"> <chem file="200610200291_cml001.xml" / > < / chemistry>

[0004] Oxidation reaction: <chemistry num="002"> <chem file="200610200291_cml002.xml" / > < / chemistry>

[0005] The traditional flue gas desulfurization reactor-absorption tower is mainly divided into three types: spray tower, liquid column tower and bubble tower, among which spray tower and liquid column tower are widely used in the field of wet desulfurization equipment in power stations. Both the traditional spray tower and...

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