Semi-dry flue gas desulfurization device

Abstract

The invention provides a semi-dry flue gas desulfurization device, and belongs to the technical field of desulfurization devices. A flue gas output end of a boiler communicates with the bottom of a reactor through a pipeline; a Roots blower communicates with the bottom of the reactor through a pipeline; the output end of a process water tank respectively communicates with the top and the bottom ofthe reactor through two pipelines; the output end of a stock bin respectively communicates with the top of the reactor and a pipeline connected between the Roots blower and the bottom of the reactorthrough two pipelines; the outlet end of the reactor communicates with the inlet end of a slaked lime bin through a pipeline; a top outlet of the slaked lime bin communicates with a dust remover body,a bottom outlet of the slaked lime bin communicates with a circulating reflux device, the circulating reflux device communicates with the bottom of the reactor, the dust remover body communicates with a chimney, and the bottom of the dust remover body communicates with the circulating reflux device. According to the invention, the problems that the investment of wet desulphurization equipment iscontinuously increased, the operation cost is too high and the like due to the improvement of environmental protection indexes are solved, and the desulphurization efficiency is greatly improved.

Description

technical field [0001] The invention relates to a semi-dry flue gas desulfurization device, which belongs to the technical field of desulfurization devices. Background technique [0002] Humidified ash cycle desulfurization technology, also known as NID technology, is a semi-dry desulfurization technology. It mixes slaked lime powder and circulating ash collected by the dust collector in a mixing humidifier, adds water to humidify, and then introduces it into the flue reactor. Desulfurization reaction is carried out, but with the improvement of environmental protection indicators, in the face of problems such as low desulfurization efficiency of equipment, high dust emission concentration, and serious wall sticking during spraying, the investment in wet desulfurization equipment continues to increase. Fees also increase. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art, and then provide a sem...

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problems of increasing investment in wet desulfurization equipment and high operating costs due to the improvement of environmental protection indicators, and at the same time greatly improves the efficiency of desulfurization, reduces the emission concentration of dust, and saves complicated manufacturing. The slurry system overcomes the problem of wall sticking during the spraying process and prolongs the life of the equipment

Images