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A wet-type integrated desulfurization, denitrification, mercury removal tower and process for PM2.5 removal

A desulfurization, denitrification, mercury removal, and removal tower technology, which is applied in the field of wet integrated desulfurization, denitrification, mercury removal, and PM2.5 removal towers and processes, to achieve the effects of improving efficiency, saving floor space, and ultra-low emissions

Active Publication Date: 2016-03-23
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, there are few reports on the technology or equipment combining wet electrostatic precipitator technology with flue gas simultaneous desulfurization, denitrification and demercuration technology in the existing technology. The applicant is committed to developing this new product to realize the 2 , NO x , mercury and PM2.5, etc., and can effectively prevent the phenomenon of "gypsum rain" after wet desulfurization, which not only improves the effect of air pollution control, meets the ultra-low emission requirements, but also effectively reduces operating costs and occupation The new type of "flue gas treatment tower" equipment and technology formed is an important progress in environmental protection technology innovation, and it is of great significance for the coordinated control of various pollutants

Method used

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  • A wet-type integrated desulfurization, denitrification, mercury removal tower and process for PM2.5 removal
  • A wet-type integrated desulfurization, denitrification, mercury removal tower and process for PM2.5 removal

Examples

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Embodiment 1

[0045] figure 1 It is a structural schematic diagram of a wet-type integrated desulfurization, denitrification, demercuration, and PM2.5 removal tower of the present invention. Such as figure 1 As shown, a wet-type integrated desulfurization, denitrification, mercury, and PM2.5 removal tower proposed in this embodiment is provided with a wet desulfurization section 100 and an oxidation, denitrification, and mercury removal section 200 from bottom to top in the removal tower. and the wet electrostatic precipitator section 300 , the flue gas inlet 400 is arranged on the wet desulfurization section 100 , and the clean flue gas outlet 500 is arranged on the wet electrostatic precipitator section 300 .

[0046] Specifically, the wet desulfurization section 100 includes a tower bottom slurry pool 107 and a desulfurizer slurry spray layer 108, the desulfurizer slurry spray layer 108 is arranged above the tower bottom slurry pool 107, and the flue gas inlet 400 channel is set in the ...

Embodiment 2

[0063] This example proposes a wet-type integrated desulfurization, denitrification, mercury removal, and PM2.5 removal process. The wet-type integrated desulfurization, denitrification, mercury, and PM2.5 removal tower described in Example 1 is used for flue gas purification treatment. As shown in the figure, the following steps are included:

[0064] Step S101, wet desulfurization stage: introduce the flue gas to be treated into the wet desulfurization section 100 through the flue gas inlet 400, start the desulfurizer slurry spray layer 108 to spray the flue gas to be treated, and complete the wet desulfurization process. Desulfurization.

[0065] Step S102, denitrification and demercury stage: the flue gas to be treated after desulfurization enters the oxidative denitrification and demercuration section 200, passes through the flue gas uniform distribution device 201 and the flue gas distribution plate 203, and The oxidant solution 204 fully contacts and reacts to oxidize ...

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Abstract

The invention discloses a removal tower and technology for wet-type integration desulfurization, denitrification, demercuration and PM 2.5 removal. A wet-type desulfurization section, an oxidation denitrification and demercuration section and a wet electrostatic dedusting section are sequentially arranged in the removal tower from bottom to up; an exhaust gas inlet is formed in the wet-type desulfurization section; an exhaust gas purification outlet is formed in the wet electrostatic dedusting section. The technology comprises the following steps: S101, wet-type desulfuration phase; S102, denitrification and demercuration phase; S103, PM 2.5 removal phase; S104, exhaust gas discharging and purification phase. According to the invention, the situation that subparticles including oxysulfide, NOx, Hg, PM 2.5 in the exhaust gas are sequentially removed in the same removal tower is realized, gypsum rain can be effectively prevented, the exhaust gas purification efficiency is improved, ultralow exhaust gas emission is realized, the occupied area is greatly saved, and the operating cost is reduced.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to a wet-type integrated desulfurization, denitration, demercuration, and PM2.5 removal tower and process. Background technique [0002] The rapid progress of industrialization has brought rapid economic development and continuous improvement of living standards for human beings. However, while enjoying the fruits of industrialization, human beings are also suffering from various environmental pollution problems caused by fossil fuels in industrial production. Among them, air pollution is one of the most serious environmental problems facing the survival and development of human society in the 21st century. my country is a country with abundant coal reserves. Coal accounts for 75% of the primary energy. The excessive dependence of the energy consumption structure on coal has led to the aggravation of air pollution. The sulfur dioxide and nitrogen oxides emitted by coal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/75B01D53/50B01D53/56B01D53/64B01D50/00
Inventor 高继贤张小娟阎冬洪小松范治国
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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