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Double-dielectric barrier discharge low-temperature plasma generator

A technology of low-temperature plasma and blocking discharge, which is applied in the field of plasma, can solve the problems that are not suitable for the treatment of harmful gas pollutants, and achieve the effects of stable discharge, ensuring stability and avoiding corrosion

Inactive Publication Date: 2010-09-15
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The device is mainly used for surface modification of materials, not suitable for the treatment of harmful gas pollutants

Method used

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  • Double-dielectric barrier discharge low-temperature plasma generator
  • Double-dielectric barrier discharge low-temperature plasma generator
  • Double-dielectric barrier discharge low-temperature plasma generator

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Embodiment Construction

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] The dual-dielectric barrier discharge low-temperature plasma device of the present invention connects the high-voltage electrode 6 to a variable-voltage variable-frequency plasma power supply and the low-voltage electrode 3 to ground to generate low-temperature plasma discharge between the two dielectrics. The outer layer of the high-voltage electrode 6 is covered with a quartz glass tube B5, which can prevent the harmful gas from corroding the electrode during the discharge process, protect the discharge performance of the electrode, make the work of the low-temperature plasma generator more stable, and effectively extend the service life. The present invention adopts a double-dielectric barrier discharge structure, and the gas enters the gas phase reaction zone of the low-temperature plasma generator through the gas inlet 1 and is di...

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Abstract

The invention discloses a double-dielectric barrier discharge low-temperature plasma device, and belongs to the field of low-temperature plasma technology. The plasma device comprises an air inlet (1), a polytetrafluoroethylene plug (2), a low voltage electrode (3), a quartz glass tube A (4), a quartz glass tube B (5), a high voltage electrode (6) and an air outlet (7), wherein the outer layer of the high voltage electrode (6) is the quartz glass tube B (5), and the low voltage electrode (3) consists of constantan sheets and is led out by a lead wire and grounded. In the process of treating pollutant gas, the low-temperature plasma generator can effectively reduce the corrosion of air on the high voltage electrode and avoid generating arc discharge and further damaging or breaking down discharge dielectric layers. The formed double-dielectric barrier discharge has high stability and high energy density utilization rate. The low-temperature plasma device can stably work under normal pressure and is applied to the discharge of automotive noxious pollutant gas.

Description

technical field [0001] The invention belongs to the technical field of low-temperature plasma, and more precisely relates to a double dielectric barrier discharge low-temperature plasma generator. Background technique [0002] Dielectric barrier discharge (DBD) is a non-equilibrium gas discharge in which a dielectric layer is placed in the discharge space. In the DBD structure, at least one layer of dielectric covers the electrodes or hangs in the discharge space; in this way, when an AC voltage of a certain frequency (50Hz-1MHz) is applied between the two electrodes, the gas between the electrodes will be broken down to form a dielectric barrier discharge. The insulating properties of the dielectric layer make the surface approximately uniformly distributed small "local capacitance" on the microscopic level, which makes the insulating medium have two functions: one is to limit the movement of charged particles in micro-discharge, that is, to limit the free growth of curren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
Inventor 王攀蔡忆昔李小华王军
Owner JIANGSU UNIV
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