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A device for treating benzene-containing waste gas by particle group electrode adsorption coupled with electrocatalytic oxidation

A particle swarm electrode, catalytic oxidation technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of small processing capacity per unit cell, low current efficiency, etc., and achieve low operating costs and current efficiency. improve, good effect

Inactive Publication Date: 2015-10-21
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional flat two-dimensional electrode surface is relatively small, the processing capacity per unit cell is small, and the current efficiency is low, especially when the conductivity is low, so it is difficult to make breakthroughs in practice.

Method used

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  • A device for treating benzene-containing waste gas by particle group electrode adsorption coupled with electrocatalytic oxidation
  • A device for treating benzene-containing waste gas by particle group electrode adsorption coupled with electrocatalytic oxidation
  • A device for treating benzene-containing waste gas by particle group electrode adsorption coupled with electrocatalytic oxidation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The size of the built-in electrolytic reactor of this device is 500mm×500mm×1000mm, which is composed of 9 sets of unit reactors. The positive conductive plate is composed of 9 Ti electrodes, and the distance between the positive conductive plates is 100mm. The negative conductive plate is stainless steel mesh, and the electrode mesh is Both are 2mm×2mm. The positive electrode conductive plate and the negative electrode conductive plate are placed vertically, and the stainless steel mesh surrounds the positive electrode conductive plate. The space between the positive conductive plate and the negative conductive plate is filled with a particle group electrode mixed with modified activated carbon particles with a diameter of 10mm and soft polyvinyl chloride. The electrolyte is a sodium sulfate solution with a mass concentration of 5%. For comparison, the particle group electrode is filled with unmodified activated carbon in the same device. The gas flow rate was 20m3 / h;...

Embodiment 2

[0027] The size of the built-in electrolytic reactor of this device is 500mm×500mm×1000mm, which is composed of 9 sets of unit reactors. The positive conductive plate is composed of 9 Ti electrodes, and the distance between the positive conductive plates is 100mm. The negative conductive plate is stainless steel mesh, and the electrode mesh is Both are 2mm×2mm. The positive electrode conductive plate and the negative electrode conductive plate are placed vertically, and the stainless steel mesh surrounds the positive electrode conductive plate. The space between the positive conductive plate and the negative conductive plate is filled with a particle group electrode mixed with modified activated carbon particles with a diameter of 10mm and soft polyvinyl chloride. The electrolyte is a sodium sulfate solution with a mass concentration of 5%. For comparison, the particle group electrode is filled with unmodified activated carbon in the same device. Set DC voltage 10V, current 6...

Embodiment 3

[0032] The device setting and control conditions of this embodiment are the same as those of Embodiment 2, the difference is that the positive conductive plates are respectively Ti electrodes, SnO 2 / Ti electrode, IrO 2 / Ti electrode, MnO 2 / Ti electrode, PbO 2 / Ti electrode. The influence of different positive electrode conductive plates on the removal effect of benzene series was tested under the same conditions. The test results are shown in Table 3. The results show that the metal oxide composite electrode has a better removal effect than the pure Ti electrode, while the IrO 2 / Ti electrode and MnO 2 / Ti electrode has a better removal effect than the other two metal oxide electrodes.

[0033] table 3

[0034]

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PUM

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Abstract

The invention discloses an apparatus for the oxidization treatment of a benzene-containing exhaust gas through the coupling of particle swarm electrode adsorption with electro-catalysis. The apparatus comprises a cylinder and an electrolytic reactor; a gas inlet and a gas outlet are arranged at two ends of the cylinder respectively; the electrolytic reactor is arranged in the cylinder; the electrolytic reactor comprises a plurality of unit reactors; each of the unit reactors comprises a positive-electrode conductive plate and a negative-electrode conductive plate which are arranged in parallel; and particle swarm electrodes are filled between the positive-electrode conductive plate and the negative-electrode conductive plate. The apparatus can effectively improve the treatment effect of the benzene organic pollutant-containing exhaust gas, allows the organic waste to be instantly degraded after absorbed by the surfaces of the particle swarm electrodes, realizes the integration of the adsorption and degradation of the organic exhaust gas, has a high treatment efficiency and has no secondary pollution. The apparatus has the advantages of small size, low equipment cost, simple operation, low running and using cost, realization of the equipment with a proper amount of the unit reactors according to the exhaust gas amount and the treatment requirements, economy and high efficiency.

Description

technical field [0001] The invention relates to a device for treating benzene-containing waste gas by particle swarm electrode adsorption coupled with electrocatalytic oxidation, in particular to a device for absorbing benzene-containing organic waste gas by using particle swarm electrode adsorption combined with electrocatalytic oxidation. Background technique [0002] Contains benzene, toluene, (o-, m-, p-)xylene, ethylbenzene, styrene, cumene organic waste gas, produced in petrochemical, organic chemical, coking industry, pesticides, rubber adhesives, artificial leather, varnished cloth, adhesive tape , insulation material industry and decoration furniture manufacturing industry, etc. These benzene series pollutants are not only highly toxic to the human body and endanger physical and mental health, but also cause serious impact on the local environment when discharged in large quantities. Because the chemical structure of this kind of waste gas is relatively stable, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/32
Inventor 李国平胡志军杨振亚王彧何忠
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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