Dust-removing, mist-removing and water-saving technology for desulfurizing of wet desulfurizing tower

Abstract

The invention discloses a dust-removing, mist-removing and water-saving technology for desulfurizing of a wet desulfurizing tower and relates to the field of waste gas purifying. The dust-removing, mist-removing and water-saving technology solves the problems that gypsum rain happens in wet type desulfurizing, and the cost is too high in wet type electrostatic dust removing. An impact cooling room, a coagulating room and a fine particle filtering unit are included. An upper opening of the impact cooling room is connected with a lower opening of the coagulating room through a bottleneck, and the fine particle filtering unit is fixed to the top of the coagulating room. An atomizing nozzle is further arranged in the center position, close to the lower opening, in the impact cooling room. An opening of the atomizing nozzle is upward, and the atomizing nozzle is connected with an external water supplying device through a pipeline. The dust-removing, mist-removing and water-saving technology is low in manufacturing cost, simple in installation, long in service life, free of risks of scaling and blocking, and capable of solving the problem of gypsum rain; water in separated smoke can be recovered into a desulfurizing system through a pipeline, separated out water can be used for the desulfurizing system, and zero water supplementing of the desulfurizing system can be achieved basically.

Description

technical field [0001] The invention relates to the field of waste gas purification, and specifically designs a wet-type desulfurization tower dedusting and demisting water-saving device, which is suitable for wet desulfurization systems, further dedusting and defogging the saturated flue gas behind the desulfurization tower, and recovering the saturated flue gas. free water and some water vapour. Background technique [0002] my country is a large coal-burning country. The sulfur dioxide, nitrogen oxides and dust produced by coal combustion have caused serious pollution to the atmospheric environment of our country. The flue gas desulfurization, denitrification and dust removal devices have played an important role in improving the atmospheric environment of our country. [0003] At present, my country's denitrification device is mainly based on the SCR process, supplemented by SNCR technology; the dust removal device is mainly based on electrostatic precipitator, bag filte...

AI Technical Summary

Problems solved by technology

[0005] Another problem easily caused by wet desulfurization is the problem of "chimney rain". Chimney rain is acidic and contains dust, gypsum, limestone and dissolved salts, which brings new environmental problems around the power plant

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