Particulate diffusion charge thickening method

A particle and charging technology, applied in the field of plasma technology and environmental engineering, can solve the problem of thickening of diffusion charging

Inactive Publication Date: 2013-09-04
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention solves the existing problem of capturing primary particles with a particle size of less than 0.1 μm, and provides a new method for the diffusion and charge thickening of primary particles with a particle size of less than 0.1 μm

Method used

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Embodiment Construction

[0036] Describe the embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing:

[0037] The principle of the charging and thickening method of PM0.1 primary particulate matter of the present invention is shown as follows figure 1 shown. The output voltage of the high-frequency high-voltage alternating power supply 8 is applied to the high-voltage electrode 11, and a high-frequency high-voltage charging and thickening alternating electric field 3 is formed between the high-voltage electrode 11 and the ground electrode 10, and the concentration is as high as 10 10 / cm 3 ~10 14 / cm 3 The unipolar ions 1 and the gas containing PM0.1 primary particulate matter 2 are injected into the 0.1m-4m long high-frequency high-voltage charged thickening alternating electric field 3, that is, every 1cm 3Unipolar ions in gas up to 10 10 ~10 14 more than one. The unipolar ion 1 makes a 10-degree gap between the high-voltage electrode...

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Abstract

A particulate diffusion charge thickening method belongs to the technical field of environmental engineering and the like. The method provided by the invention is characterized in that primary particulates of PM0.1 and unipolar ions are injected together in a high-frequency high-voltage alternating electric field; the unipolar ions perform reciprocating motions up and down in the high-frequency high-voltage alternating electric field for 103-104 times; and each particulate of PM0.1 and the unipolar ions undergo collision charge thickening for tens of thousands even hundreds of thousands so as to further increase the particle size by 10-103 times and agglomerate to form primary particulates with the particle size being greater than 2 microns. Effects and advantages of the method provided by the invention are as follows: an effective method is provided to remove the atmospheric pollutant primary particulates of PM0.1; the method also can be used in ultramicro-sized coal dust dispersion charge electrocoagulation pretreatment by a dust remover; and one-time investment and operation costs and energy consumption are all reduced significantly.

Description

technical field [0001] The invention belongs to the technical fields of gas discharge physics, plasma technology and environmental engineering, and relates to a method for thickening primary particles with a particle diameter of less than 0.1 μm by diffusion charging. Background technique [0002] my country is a rising economic power. Two-thirds of energy comes from coal, which is highly dependent. From 2005 to 2010, coal consumption increased by 44%. Fine dust, that is, primary particulate matter PM0.1 with a particle size of ≤0.1 μm. Due to its large specific surface area, strong activity, and strong adsorption, the surface of PM0.1 is very easy to accumulate heavy metals (As, Se, Pb, Cr, etc.) in the air and organic pollutants such as PAHs and VOCs; it is also easy to attach SO 2 , NOx and its by-products sulfuric acid, nitric acid, sulfate, nitrate and other pollutants, these pollutants are mostly carcinogens or genotoxic mutagenic substances. These trace pollutants ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/34B03C3/66
Inventor 白敏菂毛首蕾朱玉鹏李超群冷白羽
Owner DALIAN MARITIME UNIVERSITY
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