Condensation phase change type wet-process desulfurization system and method capable of removing flue gas and smoke dust in cooperation

Abstract

The invention provides a condensation phase change type wet-process desulfurization system and method capable of removing flue gas and smoke dust in cooperation. The system comprises a wet-type desulfurization tower and a cooler arranged outside the wet-type desulfurization tower, wherein an absorbent slurry tank is arranged at the bottom of the wet-type desulfurization tower; multilayer spraying mechanisms are arranged at the upper part of the wet-type desulfurization tower from bottom to top; a demister is arranged above the spraying mechanisms; the inlet of a cooler is communicated with the absorbent slurry tank, and the outlet of the cooler is connected with the spraying mechanisms; an inlet connected with a flue gas inlet pipe is formed in the wall, under the spraying mechanisms and above the absorbent slurry tank, of the wet-type desulfurization tower; a flue gas outlet pipe is connected with the topmost end of the wet-type desulfurization tower; and the inner region, under the demister and above the flue gas inlet pipe, of the wet-type desulfurization tower is a phase change condensed dust removing layer. According to the system provided by the invention, adsorbent slurry which is circularly used by the wet-type desulfurization tower is cooled outside the tower so that flue gas in the wet-type desulfurization tower is saturated and is condensed by taking micro-fine dust as condensation cores, and the micro-fine dust falls down or is removed by the demister and a dust remover after becoming large.

Description

technical field [0001] The invention relates to a technology for removing smoke and dust from flue gas, in particular to a condensation phase change wet desulfurization system and method for cooperatively removing flue gas and dust. Background technique [0002] As the country pays more and more attention to environmental protection, fine particulate matter, SO 3 The emission reduction of acid mist, heavy metals (such as mercury) and other pollutants in the form of aerosols has been put on the agenda. The new national "Ambient Air Quality Standards" has greatly increased the original emission standards. At the same time, mercury, PM2 .5 Incorporated into ambient air quality standards. On January 28, 2013, the China Meteorological Administration listed the concentration of PM2.5, which reflects air quality, together with meteorological elements such as atmospheric visibility and relative humidity, as important indicators for early warning classification. [0003] At present...

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a condensate phase change wet desulfurization system and method for collaborative removal of flue gas and dust, which is used to solve the problem of the inability to remove smoke during the desulfurization process in the prior art. The problem of respirable dust in the air

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