Single-tower five-area waste heat recovery, denitration, desulfurization, dust removal and white smoke removal tail gas purification device

Abstract

The invention relates to the technical field of flue gas dust removal, in particular to a single-tower five-area waste heat recovery denitration, desulfurization, dust removal and white removal tail gas purification device, which comprises a denitration and desulfurization device and a tail gas white removal device which are connected through a gas inlet pipe, and a dust collection tank is fixed to the lower end of an inner cavity of the tail gas white removal device. A dust collection box is fixed outside the left end of the dust collection groove; guide plates are fixed to the upper ends of the dust collection grooves, and baffles are hinged to the upper ends of the guide plates; a collision plate is arranged on the inner side of the baffle, and the other end of the collision plate is connected to the two sides of the vertical rod. Springs are fixed to the upper end and the lower end of the vertical rod, elastic pieces are fixed to the outer side ends of the springs, and sliding grooves are formed in the upper portions of the elastic pieces; an adsorption box is arranged at the upper end of the sliding groove, a plurality of adsorption balls are arranged in an inner cavity of the adsorption box. By means of the device, a small amount of sulfur-containing steam contained in flue gas is removed, dust particles are removed through collision of the collision plate, pollution is prevented, impurities are separated and collected outside the tower through the dust collecting groove and the sliding groove, and operation is easy.

Description

technical field [0001] The invention relates to the technical field of flue gas dedusting, in particular to a single-tower five-zone waste heat recovery denitrification, desulfurization, dedusting and dewhitening tail gas purification device. Background technique [0002] In recent years, the pressure of environmental protection has been increasing. Although the ultra-low emission transformation of coal-fired power plant boilers has made great progress, the ultra-low emission work of industrial boilers and kilns, especially kilns, still needs to be strengthened. Due to the difference in temperature and composition, some traditional mature methods such as SCR (selective catalytic reduction), SNCR (selective non-catalytic reduction), limestone-lime method, etc. are often difficult to copy and use directly; the outlet of the wet desulfurization tower is Wet saturated flue gas carries a large amount of water vapor in the flue gas. If it is directly discharged into the atmosphere...

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Problems solved by technology

[0002] In recent years, the pressure of environmental protection has been increasing. Although the ultra-low emission transformation of coal-fired power plant boilers has made great progress, the ultra-low emission work of industrial boilers and kilns, especially kilns, still needs to be strengthened. Due to the difference in temperature and composition, some traditional mature methods such as SCR (selective catalytic reduction), SNCR (selective non-catalytic reduction), limestone-lime method, etc. are often difficult to copy and use directly; the outlet of the wet desulfurization tower is Wet saturated flue gas carries a large amount of water vapor in the flue gas. If it is directly discharged into the atmosphere, part of the water vapor will condense into water and form white smoke and rain, causing visual pollution.

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