Process and device for removing combined pollutants

A pollutant removal technology, applied in the direction of combined devices, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as clogging, fine dust, acid mist aerosol cannot be removed, etc., to improve collection capacity, reduce load, avoid The effect of plaster rain

Inactive Publication Date: 2012-06-20
浙江菲达脱硫工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The problem to be solved by the present invention is to provide a complex pollutant removal process, which can effectively solve the problem of the existing FGD device on PM 2.5 Dust and SO 3 Acid mist aerosol cannot remove the problem, and "gypsum rain" and GGH blockage problems

Method used

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  • Process and device for removing combined pollutants
  • Process and device for removing combined pollutants
  • Process and device for removing combined pollutants

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Embodiment Construction

[0029] Such as figure 1 The flow chart of a kind of complex pollutant removal process of the present invention shown, a kind of composite pollutant removal process comprises the steps:

[0030] 1) Spray absorption purification step: After the original flue gas is sprayed through limestone slurry, SO 2 Such acid gas can be absorbed, and a large number of gypsum slurry droplets and water droplets are produced;

[0031] 2) Tubular pre-defogging step: remove larger gypsum slurry droplets and water droplets in the flue gas through the collision mechanism, and uniformly distribute the flue gas flow field;

[0032] 3) Purification step of wet electrostatic precipitator: make PM 2.5 Dust, SO 3 Acidic aerosols and fine slurry droplets are charged and settled on the dust collector to purify the flue gas.

[0033] In addition if figure 2 As shown, the present invention also provides a kind of composite pollutant removal device that realizes above-mentioned composite pollutant remov...

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Abstract

The invention discloses a process for removing combined pollutants. The process for removing the combined pollutants comprises the following steps of: 1) spraying, adsorbing and purifying; 2) carrying out tubular pre-defogging; and 3) carrying out wet electric dedusting for purifying. In addition, the invention also provides a device for removing the combined pollutants for implementing the process for removing the combined pollutants, wherein the device for removing the combined pollutants comprises a removal tower of which the bottom is provided with a smoke inlet and the top is provided with a smoke outlet, a desulfurization spraying layer, a tubular defogger and an electric dust catcher are orderly arranged between the smoke inlet and the smoke outlet from bottom to top in the removal tower, and a slurry pond for storing limestone slurry is arranged under the smoke inlet. According to the invention, three process steps are integrated in one removal tower, so that a top defogger in the traditional desulfurizing tower is omitted, PM2.5 tiny dust and SO3 acid mist aerosol are removed efficiently and a 'gypsum rain' phenomenon is avoided effectively.

Description

technical field [0001] The invention relates to the field of environmental protection science, in particular to a complex pollutant removal process and device. Background technique [0002] Compound pollution refers to the phenomenon of environmental pollution caused by the simultaneous existence of two or more pollutants of different types and properties in the same environment. Pollutants that can cause compound pollution are called compound pollutants, such as SO in flue gas 2 , NO X , acid mist aerosol, mercury, NH 3 , PM 2.5 etc., they can react with each other or other pollutants in the atmosphere, resulting in more serious air pollution. Thermal power plants are the main emission source of these pollutants. Existing flue gas desulfurization towers in thermal power plants can remove various pollutants through scrubbing, but PM 2.5 The removal effect of fine dust, mercury, acid mist aerosol, etc. is very little, and the existing technology has the following problems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D50/00B01D53/50
Inventor 戴永阳刘大华葛介龙周超炯傅峡裴磊黄国义
Owner 浙江菲达脱硫工程有限公司
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