Device and method for desulphurization and dust-removal

Abstract

The invention discloses a desulphurization and dust-removal device, and a desulphurization and dust-removal method. The desulphurization and dust-removal device comprises a desulphurization tower, and further comprises a vertical type wet-electric type dust remover which is arranged above the desulphurization tower, wherein a desulphurization tower flue gas inlet is formed in the desulphurization tower; the desulphurization tower comprises a housing and a desulphurization device connected with the housing; the desulphurization device comprises a desulphurization magma spraying and circulating system, and a magma tank for accommodating the magma; the magma tank is arranged in the housing and positioned in the lower part of the housing; the desulphurization magma spraying and circulating system comprises a circulating pump which is connected to the magma tank by a pipeline, and four layers of spraying tubes which are connected to the circulating pump; each layer of the spraying tubes comprises at least one spraying tube; the four layers of the spraying tubes are arranged on the upper part of an inner cavity of a housing; a flue gas inlet of the vertical type wet-electric type dust remover is connected to a flue gas outlet of the desulphurization tower; and after being subjected to desulphurization by the desulphurization tower, and dust removal by the vertical type wet-electric type dust remover, the flue gas reaches national environment-friendly emission requirements.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a flue gas desulfurization and dust removal device and method. Background technique [0002] While the heat is released during the combustion process of the boiler, a large amount of sulfur and its oxides will also be produced. If it is not absorbed or transformed, it will be directly discharged into the air, which will cause serious air pollution and cause great harm to humans, animals and plants. The dust in the exhausted flue gas is also likely to cause smog, etc.; therefore, the flue gas generated by boiler combustion needs to be treated before being discharged, including the treatment of sulfur and its oxides and the treatment of other dust. Desulfurization and dust removal technology has become the boiler industry. One of the main research directions. At present, the desulfurization and dust removal devices on the market often use limestone in the furnace and electr...

AI Technical Summary

Problems solved by technology

At present, the desulfurization and dust removal devices on the market often use limestone in the furnace and electrostatic dust removal for dust removal. Although there is a certain dust removal effect, the flue gas after the two treatments cannot meet the national environmental protection emission requirements

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