Dust growing combined dust removal and demisting integrated device of desulfurization tower

Abstract

The invention provides a dust growing combined dust removal and demisting integrated device of a desulfurization tower and belongs to the technical field of dust removal and demisting of flue gas, aiming at solving the problems that flue gas at an outlet of a traditional desulfurization tower carries fine dust and gypsum mist drops and a gypsum rain phenomenon of a chimney is extremely easily caused. A first-grade roof ridge type demister is mounted at the upper part in the desulfurization tower; a gas lifting cap water reflowing layer, a novel venturi scrubber, a water spraying layer, a second-grade roof ridge type demister and a third-grade roof ridge type demister are mounted above the first-grade roof ridge type demister in sequence; a circulating water tank is arranged at the outer part of the desulfurization tower; the gas lifting cap water reflowing layer is communicated with the circulating water tank through a water returning pipeline; the gas lifting cap water reflowing layer is composed of a plurality of gas lifting caps; the circulating water tank is communicated with the water spraying layer through a circulating water pipeline; the water spraying layer is composed of a pipeline and a plurality of atomization nozzles. According to the dust growing combined dust removal and demisting integrated device of the desulfurization tower, provided by the invention, the cooperated dust removal capability of the desulfurization tower can be improved and the gypsum rain phenomenon of the chimney is completely eliminated.

Description

technical field [0001] The invention relates to an integrated device for removing dust and fog, in particular to an integrated device for dust removal and fog removal in a desulfurization tower, which belongs to the technical field of dust removal and fog removal for flue gas. Background technique [0002] At present, more than 90% of the desulfurization process of coal-fired power plants in my country adopts limestone-gypsum wet desulfurization process, and a demister is installed on the upper part of the desulfurization tower to remove fog and dust. With the continuous advancement of ultra-low emissions of flue gas pollutants in coal-fired power plants, How to achieve efficient dust removal has become a research hotspot and difficulty at this stage. At present, the smoke and dust 5mg / Nm is achieved by using the flue gas collaborative treatment technology 3 The ultra-low emission of ultra-low emission has become more and more mainstream. The key to the success of this techn...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a desulfurization tower dust growing combined dust removal and mist removal integrated device to improve the desulfurization tower's cooperative dust removal ability, so as to solve the problem that conventional mechanical demisters are difficult to remove particles with a particle size below 20 μm (especially PM2.5) The problem of fine dust and gypsum droplets

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