Reactor for filtering PAHs (polycyclic aromatic hydrocarbons) in composite electrocatalytic oxidation treatment

A technology of a reactor and a reactant is applied in the field of reactors for filtering compound electrocatalytic oxidation to treat PAHs, which can solve problems such as few reports and difficulties, and achieve the effects of small pore size, high porosity, and control of the generation of harmful by-products.

Active Publication Date: 2012-02-01
南京艾可力环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are few reports on the treatment of PAHs
The concentration of PAHs in flue gas is lower, the existence forms are more diverse, and the structure is more stable. It will be more difficult to remove PAHs by dielectric barrier micro-discharge

Method used

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  • Reactor for filtering PAHs (polycyclic aromatic hydrocarbons) in composite electrocatalytic oxidation treatment
  • Reactor for filtering PAHs (polycyclic aromatic hydrocarbons) in composite electrocatalytic oxidation treatment
  • Reactor for filtering PAHs (polycyclic aromatic hydrocarbons) in composite electrocatalytic oxidation treatment

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Experimental program
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Effect test

Embodiment 1

[0029] a kind of like figure 1 and figure 2 The shown cylindrical filtration composite electrocatalytic oxidation reactor for treating PAHs includes a shell 1 (outer cylinder) with a circular cross section and a porous metal reaction body 3 (inner cylinder). The outer cylinder is a quartz glass tube or ceramics, the outer wall of the quartz glass tube or ceramics is wrapped with a metal conductor 2, and the metal conductor 2 is grounded as an external electrode for dielectric barrier discharge. The metal conductor 2 is a metal foil or a metal coating with a thickness of 0.5-1mm, and the material is silver, copper or aluminum. The inner cylinder is connected to an AC high-voltage power supply 6 (10-30kV) as an inner electrode for dielectric barrier discharge. The porous metal reaction body 3 is a porous material with a rigid structure made of spherical or irregular stainless steel powder through press molding and high-temperature sintering, and supports a metal oxide catalys...

Embodiment 2

[0031] Such as image 3 and Figure 4 A reactor for treating PAHs with plate-type filtration composite electrocatalytic oxidation includes a housing 1 of quartz glass or ceramics, one end of the housing 1 is an air inlet 4, and the other end is an air outlet 5; the outer layer of the housing 1 The metal conductor 2 is wrapped, and the metal conductor 2 is grounded as the external electrode of the dielectric barrier discharge; the metal conductor 2 is a metal foil or a metal coating with a thickness of 0.5-1mm, and the material is silver, copper or aluminum. There is a porous metal reaction body 3 inside the casing 1, and the porous metal reaction body 3 is connected to an AC high voltage power supply 6 (10-30kV) as an inner electrode for dielectric barrier discharge. The cross-sections of the housing 1 and the porous metal reaction body 3 are both rectangular, and one opposite wall of the reaction body 3 is close to the inner wall of the housing 1 and is isolated by an insula...

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PUM

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Abstract

The invention discloses a reactor for filtering PAHs (polycyclic aromatic hydrocarbons) in waste gas from composite electrocatalytic oxidation treatment. The reactor comprises a housing, wherein the housing is made of quartz glass or ceramics, a gas inlet is arranged at one end of the housing, and a gas outlet is arranged at the other end of the housing; a metal conductive material is wrapped on the outer wall surface of the housing, and the metal conductive material is grounded as an outer electrode for dielectric barrier discharge; a porous metal reaction body is arranged right in the middle in the housing, and the porous metal reaction body is connected with an alternating current power supply as an inner electrode for the dielectric barrier discharge; the porous metal reaction body isformed by sintering stainless steel powder and loaded with a metal oxide catalyst; the end close to the gas inlet, of the porous metal reaction body is closed, and the other end close to the gas outlet, of the porous metal reaction body is open and communicated with the gas outlet; and a certain gap is left between the housing and the porous metal reaction body for forming a dielectric barrier discharge gap, and the dielectric barrier discharge gap is communicated with the gas inlet. The reactor can realize high-efficient degradation of the gas-phase and the solid-phase PAHs.

Description

technical field [0001] The invention relates to a reactor for treating organic pollutants, in particular to a reactor for filtering and compounding electrocatalytic oxidation to treat PAHs. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs for short) refer to organic compounds with two or more benzene rings linked together, such as naphthalene, anthracene, phenanthrene, pyrene, etc. The toxicity of PAHs is highly carcinogenic, mutagenic and teratogenic. More than 400 carcinogenic PAHs and their derivatives have been found so far, and they are widely distributed. PAHs in the atmosphere are mainly the incomplete combustion of fossil fuels (such as coal, oil, natural gas, etc.), wood, paper, and garbage. Hundreds of thousands of tons of PAHs are artificially emitted into the atmosphere around the world every year. Due to their poor water solubility and stable chemical properties, PAHs are persistent organic pollutants, and they tend to accumulate in the envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/76B01D53/86B01D53/72
Inventor 吴祖良谢德援陆豪
Owner 南京艾可力环境科技有限公司
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