Absorption tower slurry spray cooling white removal device

Abstract

The invention discloses an absorption tower slurry spray cooling white removal device, which comprises a slurry cooling disc (2) and a flushing device (3), the slurry cooling disc (2) is arranged below a spray layer (4) and consists of a plurality of condensation modules (21), each condensation module (21) comprises an inlet header (22) and an outlet header (23), and a plurality of heat exchange coils (24) distributed in a staggered manner are arranged between the inlet header (22) and the outlet header (23); and the flushing device (3) comprises a flushing main pipe (31), the flushing main pipe (31) is provided with a plurality of flushing branch pipes (32) which extend into the slurry cooling disc (2) and are located on the two sides of the condensation module (21), and the flushing branch pipes (32) are provided with a plurality of flushing nozzles (33) facing the condensation module (21). The device has the characteristics of good white smoke removal effect, low operation and maintenance cost and high flue gas treatment efficiency.

Description

technical field [0001] The invention relates to the technical field of wet desulfurization net flue gas treatment, in particular to a dewhitening device for absorbing tower slurry spray cooling. Background technique [0002] For the flue gas treatment of thermal power plants in my country, wet desulfurization devices are mainly used. However, the outlet of wet desulfurization is saturated or nearly saturated wet flue gas. The flue gas temperature is about 50°C. After the wet flue gas is discharged into the atmosphere through the chimney, it will condense in contact with low-temperature air, and a large number of condensed water droplets will produce light Refraction and scattering, resulting in a white or light gray smoke plume, causing visual pollution and smog. At present, the flue gas dewhitening device mainly uses the "condensation module", which is about cooling and drying the saturated wet flue gas from the spray layer of the absorption tower, forcing out the saturate...

AI Technical Summary

Problems solved by technology

Because the medium on both sides of the heat exchange tube of the conventional condensing module is water-flue gas, the heat transfer coefficient is small, the whitening effect is average, and the heat exchange area is made very large. It is often necessary to expand the diameter in the absorption tower to arrange it, resulting in occupation Large area, high operation and maintenance costs; and the thickness of the heat exchange module in the direction of flue gas flow is relatively large, and the resistance of flue gas is also large, which affects the speed of smoke exhaust and reduces the treatment efficiency of flue gas

[0004] Therefore, the existing dewhitening devices have the problems of general dewhitening effect, high cost, and low flue gas treatment efficiency.

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