Desulfurizing absorption tower and desulfurizing absorption method

Abstract

The invention discloses a desulfurizing absorption tower. The desulfurizing absorption tower comprises a tower tube (1), wherein an absorption tower inlet (2), a spraying layer (3), a demister (4) and an absorption tower outlet (5) are arranged inside the tower tube (1) sequentially from bottom to top, and a porous distributor (6) is further arranged inside the tower tube (1); the demister (4) is a two-level demister; the porous distributor (6) is positioned between the absorption tower inlet (2) and a second spraying layer (32); the porous distributor (6) comprises a plurality of supporting beams (7), and a plurality of porous plates (61) which are distributed in an array manner and spliced into a disc shape; the upper parts of two ends of the porous plates (61) are respectively connected with positioning plates (62), the adjacent porous plates (61) are connected through the positioning plates (62), and the supporting beams (7) are positioned at the lower ends of the joints (63) of the adjacent porous plates. By utilizing the desulfurizing absorption tower, the problem that the existing desulfurizing absorption tower is low in desulfurizing efficiency can be overcome, the desulfurizing absorption tower is simple in structure, and convenient to overhaul, the value of liquid / vapor in the desulfurizing absorption tower is smaller, the circular spraying amount of the spraying layers can be reduced, the manufacturing and running cost of a desulfurizing device can be effectively lowered, and the desulfurizing efficiency can be improved. The invention further discloses a desulfurizing absorption method utilizing the desulfurizing absorption tower.

Description

technical field [0001] The invention relates to an environmental protection equipment, specifically a desulfurization absorption tower, and also relates to a desulfurization absorption method using the desulfurization absorption tower. Background technique [0002] The acid rain formed by the sulfur dioxide emitted by thermal power plants has seriously endangered the living environment of human beings. The country compels thermal power plants to install flue gas desulfurization devices. In recent years, affected by the current situation of domestic thermal coal supply, many power plants have unstable coal sources, and the newly supplied coal has high sulfur content. The country's latest flue gas emission standards for thermal power plants, for SO 2 Emission concentration puts forward more stringent requirements. [0003] The existing desulfurization units cannot meet the requirements due to the desulfurization efficiency, so it is imperative to transform the desulfurizatio...

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Problems solved by technology

[0005] The existing technical solutions have the following defects: 1. The existing desulfurization absorption tower needs to establish a perfect gas flow model to optimize the arrangement of the nozzles so that the flow rate of the flue gas in the absorption tower is uniform; 2. The existing desulfurization absorption tower is in the Each spray layer needs to use a large number of nozzles, therefore, the liquid / gas in the existing desulfurization absorption tower maintains a high value for a long time, which makes the efficiency of the desulfurization absorption tower low

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