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PM2.5 removing method based on multiscale, multi-field cooperation, and multiphase coupling

A multi-scale, field synergistic technology, applied in the fields of combination devices, dispersed particle separation, chemical instruments and methods, etc., can solve the problem of poor PM2.5 removal effect, achieve good practical performance, optimal particle agglomeration efficiency, and application wide effect

Inactive Publication Date: 2017-07-04
浙江菲达环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a PM2.5 removal process based on multi-scale, multi-field coordination, and multi-phase coupling, so as to solve the problem of poor removal effect of existing PM2.5

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] PM2.5 removal process based on multi-scale, multi-field coordination, and multi-phase coupling, including multi-scale particle agglomeration device, multi-occasion particle agglomeration device and multi-phase coupling particle agglomeration device;

[0022] Multi-scale particle agglomeration devices include large-scale devices and small-scale devices. Large-scale devices can generate dm-level and / or m-level turbulence that promote effective mixing of particle groups, and small-scale devices can generate cm-level and / or mm-level turbulence vortices To promote the blended particles to further break through the inherent envelope air film and achieve direct contact;

[0023] Multi-occasion particle agglomeration device includes a combination of two or at least two of the light field, electric field, acoustic wave field, phase change field, and temperature field;

[0024] The multiphase coupling particle agglomeration device includes a combination of two or at least two of gas pha...

Embodiment 2

[0035] As described in the first embodiment of the PM2.5 removal process based on multi-scale, multi-field coordination, and multi-phase coupling, this embodiment has the following differences: the following steps are sequentially included:

[0036] Step 1: Humidification spray: spray desulfurization wastewater through the flue, on the one hand, lower the temperature of the flue gas, on the other hand, make the particles absorb moisture and increase the viscosity;

[0037] Step 2: Blending with multi-scale particle agglomeration device: processing by the multi-scale particle agglomeration device, so that the moisture-absorbing particles pass through the multi-scale particle agglomeration device for blending and turbulence processing;

[0038] Step 3: Charge the fine particles: The flue gas processed in Step 2 is processed by a charging device, and the fine particles are charged by the positive and negative electrodes of different polarities in the charging device, so that the particle...

Embodiment 3

[0043] As described in the first and second embodiments of the PM2.5 removal process based on multi-scale, multi-field coordination, and multi-phase coupling, this embodiment has the following differences: the following steps are sequentially included:

[0044] Step 1: Gaseous SO 3 Spray: spray gaseous SO through the flue 3 , Improve the properties of flue gas and dust, there is SO 3 Condensation adsorption phenomenon;

[0045] Step 2: Acoustic drive blending to strengthen particle agglomeration: through the sound field, the particles are blended and agglomerated;

[0046] Step 3: The first removal treatment; the flue gas after step 2 treatment is removed by a dry electric precipitator;

[0047] Step 4: Desulfurization treatment; the flue gas treated in step 3 enters the wet desulfurization device for desulfurization treatment, so that the fine particles not removed in step 5 are treated by spraying gypsum droplets;

[0048] Step 5: the second removal treatment; the flue gas after step ...

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Abstract

The invention relates to a PM2.5 removing method based on multiscale, multi-field cooperation, and multiphase coupling. A device used in the PM2.5 removing method comprises a multiscale particle agglomeration device, a multi-field particle agglomeration device, and a multiphase coupling particle agglomeration device. The PM2.5 removing method comprises following steps successively: cooling, sulfuric acid fogdrop adsorption, fine particle electrical charging, particle agglomeration, primary desorption treatment, desulphurization, and secondary desorption treatment. The PM2.5 removing method possesses following advantages: PM2.5 is removed via cooling, sulfuric acid fogdrop adsorption, fine particle electrical charging, particle agglomeration, primary desorption treatment, desulphurization, and secondary desorption treatment; fine particles are formed via adsorption of sulfuric acid fogdrop; the fine particles are subjected to electrical charging using an electrical charging device, and treatment using the multiscale particle agglomeration device, so that the best particle agglomeration efficiency is achieved; application range is wide; the multiscale particle agglomeration device, the multi-field particle agglomeration device, and the multiphase coupling particle agglomeration device can be combined based on different requirements flexibly.

Description

Technical field [0001] The invention relates to a PM2.5 removal process based on multi-scale, multi-field coordination and multi-phase coupling. Background technique [0002] Dust removal technology is widely used in thermal power generation and other fields, and the efficiency of dust removal directly affects the quality of dust removal. Facing the deterioration of the environment, more and more attention has been paid to the dust removal effect of dust removal devices, especially the removal rate of PM2.5. Existing PM2.5 removal treatments are all removed by electrocoagulation. The technology is single and the scope of application is narrow. The effect is not ideal, the shortcomings of less application. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a PM2.5 removal process based on multi-scale, multi-field coordination and multi-phase coupling, and solve the problem of poor PM2.5 removal effect in the prior art. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00
CPCB01D50/00
Inventor 刘含笑姚宇平郦建国何德源杜依倩杨浩峰
Owner 浙江菲达环保科技股份有限公司
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