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Wet-type electrostatic precipitation, desulfurization and denitrification integrated device and method

A technology of wet electrostatic precipitator, desulfurization and denitrification, which is applied in the direction of chemical instruments and methods, separation methods, sulfur compounds, etc., can solve the problems of difficulty in applying industrial flue gas treatment, no dust treatment, large floor area, etc., and achieve reuse , small footprint, and the effect of improving the recovery rate

Pending Publication Date: 2021-01-12
GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, pulsed corona plasma flue gas desulfurization and denitrification technology is relatively expensive, so it is currently less used
[0008] CN1772347A discloses an adsorption-low temperature plasma synchronous desulfurization and denitrification device and its method. The plasma generated by the method through pulse discharge contains a large number of high-energy electrons, ions, excited-state particles and free radicals with strong oxidative properties. The average energy of active particles is higher than the bond energy of gas molecules, so as to achieve desulfurization and denitrification, but this method does not deal with the dust in the flue gas, so it is difficult to apply to industrial flue gas treatment
However, this method still uses the traditional absorption tower, which occupies a large area and has high initial costs

Method used

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  • Wet-type electrostatic precipitation, desulfurization and denitrification integrated device and method

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Embodiment 1

[0099] This embodiment provides a device integrating wet electrostatic precipitator and desulfurization and denitrification, such as figure 1 As shown, the device includes a housing 1 and a reaction chamber formed by a body. Along the flue gas flow direction, the reaction chamber includes an electric dust removal assembly, a desulfurization assembly and a denitrification assembly arranged in sequence; the lower part of the reaction chamber is arranged There are three conical cavities, namely the first conical cavity, the second conical cavity and the third conical cavity, and the three conical cavities are respectively arranged correspondingly to the electrostatic precipitator assembly, the desulfurization assembly and the denitrification assembly.

[0100] The electrostatic precipitator assembly includes a first pole plate arranged in the reaction chamber; the first pole plate 2 is connected with a DC power supply 21; the first pole plate 2 is provided with a first water showe...

Embodiment 2

[0104] This embodiment provides a device integrating wet electrostatic precipitator and desulfurization and denitrification, such as figure 1 As shown, the device includes a housing 1 and a reaction chamber formed by a body. Along the flue gas flow direction, the reaction chamber includes an electric dust removal assembly, a desulfurization assembly and a denitrification assembly arranged in sequence; the lower part of the reaction chamber is arranged There are three conical cavities, namely the first conical cavity, the second conical cavity and the third conical cavity, and the three conical cavities are respectively arranged correspondingly to the electrostatic precipitator assembly, the desulfurization assembly and the denitrification assembly.

[0105] The electrostatic precipitator assembly includes a first pole plate arranged in the reaction chamber; the first pole plate 2 is connected with a DC power supply 21; the first pole plate 2 is provided with a first water showe...

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Abstract

The present invention provides a wet-type electrostatic precipitation, desulfurization and denitrification integrated device, an electrostatic precipitation assembly, a desulfurization assembly and adenitrification assembly are sequentially arranged in a reaction cavity, and three conical cavities capable of collecting the leacheate are correspondingly arranged, so that byproducts in the desulfurization and denitrification processes are effectively recycled respectively; the device is simple and compact in structure and small in occupied area; according to the method for carrying out electricprecipitation and desulfurization and denitrification by utilizing the device, electric precipitation is firstly carried out, and then desulfurization and denitrification are carried out in sequence,so that the influence of smoke dust on the purity of desulfurization and denitrification by-products is effectively avoided, the use amount of an oxidant can be saved, and the economic value of the whole process is increased by recycling sulfur and nitrogen in flue gas; and the flue gas treatment cost is also reduced.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a device and method integrating wet electric dust removal, desulfurization and denitrification. Background technique [0002] In recent years, with the increasingly severe situation of environmental protection work and stricter pollutant discharge standards, the SO in flue gas 2 , NO X And the emission concentration limits of traditional pollutants such as dust are further reduced, among which dust is one of the important pollution sources, and the tail gas discharged from coal-fired boilers contains a large amount of SO 2 And nitrogen oxides, also contains a lot of smoke and dust, so dust removal must be considered at the same time as desulfurization and denitrification. [0003] Traditional NO X There are two main technical means of control: the first one is selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) technology. However, the...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50B01D53/56C01B21/38C01B17/74C01B17/96B03C3/16
CPCB01D53/78B01D53/50B01D53/56C01B21/38C01B17/74C01B17/96B03C3/16B01D2258/0283B01D2251/104B01D2251/106B01D2251/304B01D2251/604
Inventor 杨颖欣胡静龄钟璐胡小吐刘勇薛学良
Owner GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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