Wet desulfurization tower with ridge type trays

Abstract

The invention discloses a wet desulfurization tower with ridge type trays. The wet desulfurization tower comprises a desulfurization tower body (3) and ridge type trays (2) arranged in the desulfurization tower body (3); each ridge type tray (2) is of a waved plate type structure; each ridge type tray (2) comprises a plurality of longitudinal row units (11) which are arranged along the X-axis direction; each longitudinal row unit (11) is of a strip shape; each longitudinal row unit (11) comprises a plurality of hole plates (12) which are connected in sequence; every two adjacent longitudinal row units (11) form a longitudinal row unit pair (16) with a ridge structure; and a gap exists between every two adjacent longitudinal row unit pairs (16). The wet desulfurization tower with the ridgetype trays comprises the ridge type trays, slurry falling on the pore plates flows down along the surface of a flat plate, and a non-countercurrent cross flow is formed by the slurry and ascending flue gas. A liquid film is broken into small liquid drops, and the gas-liquid contact area can be greatly increased, so that the desulfurization and dust-washing effects of the slurry can be remarkably enhanced.

Description

technical field [0001] The invention relates to the field of environmental protection and energy-saving and emission-reduction equipment for coal-fired power plants, in particular to a wet desulfurization tower equipped with roof-mounted trays. Background technique [0002] Large and medium-sized coal-fired power plants in my country generally use limestone-gypsum wet desulfurization system for desulfurization. The spray slurry and incoming flue gas flow in reverse in the desulfurization absorption tower. 2 Absorbed by slurry droplets to achieve flue gas SO 2 Emissions up to standard. my country's air pollutant SO for coal-fired power plants 2 The emission standard of the desulfurization system is very strict. In order to ensure the desulfurization effect, power plants generally adopt the measures of increasing the liquid-gas ratio of a single tower or adding a second desulfurization tower. Therefore, it is necessary to develop high-efficiency, low-energy desulfurization ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of low desulfurization efficiency of existing desulfurization towers, the present invention provides a wet desulfurization tower equipped with roof-type trays. Arrangement, the slurry falling on the orifice plate flows down the surface of the plate, and forms a liquid film due to the flow inertia when flowing through the opening of the tray, and forms a non-countercurrent cross flow with the upward flue gas, and the liquid film is broken into smaller liquid particles. Drops can greatly increase the gas-liquid contact area

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