Technology of saving water and controlling aerosol phenomenon in ammonia desulphurization technology

Abstract

The invention discloses a technology of saving water and controlling an aerosol phenomenon in an ammonia desulphurization technology. Boiler flue gas enters a desulphurization tower, spraying liquid and the flue gas which enters the desulphurization tower and contains SO2 are sprayed, are in contact with cooling water on a filler layer through the filler layer and then are in contact with a washing and spraying layer, and the cooling water at the bottom of the filler layer falls onto a washing hydrops disc, flows back to a water cooling tower, then enters a washing pool and is pumped to the washing and spraying layer through a washing water conveying pump to carry out circulation utilization. The technology has the advantages of simpleness in system flow, good cooling effect, low running cost and the like. According to the technology, the cooling water is sprayed to absorb (NH4)2SO4 particles, SO2 and NH3 substances in the boiler flue gas, saturated steam in the boiler flue gas carries out dew formation to form water drops by taking the (NH4)2SO4 particles as cores, and the (NH4)2SO4 particles in the boiler flue gas are captured to inhibit formation of aerosol, so that the concentration of particulate matters in the boiler flue gas discharged by the ammonia desulphurization technology is lower than 30mg / m<3>.

Description

technical field [0001] The invention belongs to the technical field of ammonia flue gas desulfurization, and in particular relates to a process for saving water and controlling aerosol phenomenon in the ammonia desulfurization process. Background technique [0002] With the development of social urbanization, technology, and humanization, industry and agriculture have developed vigorously, and more and more sulfur has been used, followed by an increase in the use of sulfur and the emergence of sulfur dioxide problems. Sulfur dioxide (SO 2 ) is the main cause of environmental problems such as acid rain and smog, and is currently the second most harmful air pollutant after inhalable particulate matter. Through introduction, digestion and absorption, etc., my country has gradually built desulfurization devices on coal-fired boilers, SO 2 The momentum of increasing pollution has been brought under control. Nevertheless, my SO 2 The base of emissions is huge, and there are ...

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Problems solved by technology

[0006] Technical problem to be solved: This application provides a process for saving water and controlling aerosol phenomenon in the ammonia desulfurization process, which solves the problems of complex equipment, low desulfurization efficiency, high cost, and large floor area in the existing ammonia desulfurization process. Technical problems, so as to reduce the concentration of particulate matter in boiler flue gas discharged by ammonia desulfurization, and ensure that ammonia desulfurization, a green desulfurization technology, can meet the current environmental protection requirements

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