Integrated device and technology for liquid phase flue gas desulfurization and denitration method

Abstract

The invention discloses an integrated device and technology for a liquid phase flue gas desulfurization and denitration method, and belongs to the technical field of flue gas desulfurization and denitration. According to the method, a multi-component water solution is adopted to chemically absorb coal-fired flue gas of a boiler. The chemical reactions are carried out in the integrated device, which is composed of an absorption tower and an out-of-tower circulation liquid separation tank. At the same time, oxynitride and sulfur oxides of flue gas can be efficiently removed, and the desulfurization rate and denitration rate can both reach 95% or more. A reaction module made of a plurality of porous sieve plates, which are serially connected, is taken as the body of the absorption tower; fluegas enters the absorption tower from the bottom of the absorption tower, an absorption solution slows down from the top of the absorption tower to an inclined plate in the bottom of the absorption tower and then enters the circulation liquid separation tank, and the obtained clarified solution can be used in cycle. The integrated device can efficiently remove sulfur, nitrate, and dust, is installed behind a boiler, and has the advantages of simple structure, low manufacturing cost, convenience, small occupied area, and low operation cost.

Description

technical field

[0001] The invention relates to the technical field of simultaneous desulfurization and denitrification of flue gas, in particular to an integrated device and process for simultaneous desulfurization and denitrification of flue gas by liquid phase method. Background technique

[0002] Although my country's air pollution problem has been effectively controlled, it is still serious compared with developed countries, especially in the northern regions where heating in winter still consumes a large amount of coal and is widely dispersed. In order to protect the health of the human body and the ecological environment, the country has adopted stricter environmental protection policies, and the smoke emission standards have been continuously improved. However, coal is still the main energy source and industrial raw material on which my country's industry and people's livelihood depend. Its output is the sum of the output of the United States, Europe, and Russia. It ...

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