Room-temperature plasma torch array device simultaneously carrying out fiber yarn modification and sewage treatment

Abstract

The invention discloses a room-temperature plasma torch array device simultaneously carrying out fiber yarn modification and sewage treatment. A plurality of rows of silica tubes internally provided with tubular metal electrodes are inserted into the electrodes of a conductive aqueous solution, one end of the silica tube penetrates the bottom of an organic-glass water tank and enters a modification room, the other end thereof is exposed out of the organic-glass water tank and sealed by a polyfluortetraethylene sleeve, the tubular metal electrodes penetrate the polyfluortetraethylene sleeve and are communicated with an active gas source, the exterior of the silica tube is communicated with an inert gas source, the bottom of the silica tube end is provided with through holes, the modification room is internally provided with fiber yarns vertical to the holes at the bottom of each row of the silica tubes and having the number corresponding to that of the silica tubes, the tubular metal electrodes are connected with a high-voltage end after being parallelly connected, and the low-voltage end is connected with the electrodes of the conductive aqueous solution. The conductive liquid is taken as an external electrode, has a cooling discharge system, reduces energy consumption, and avoids the generation of arc discharge due to the short circuit of the two electrodes caused by reflecting the plasma; simultaneously, the liquid electrode avoids the generation of medium fracture caused by different expansion coefficients of the metal electrodes and the medium.

Description

technical field [0001] The invention relates to a method and a device for generating an atmospheric pressure dielectric resistance plasma torch array. Background technique [0002] In traditional plasma research, plasma generation under vacuum conditions has always occupied a dominant position. Recently, atmospheric pressure low-temperature glow plasma source has attracted more and more attention of scientific researchers because of its advantages such as no need for expensive vacuum devices, simple system, and convenient operation. So far, many atmospheric pressure glow plasma sources have been designed, and their frequencies range from 50 Hz of direct current to 2.45 GHz of microwave. These discharge sources have shown good application prospects, such as for sterilization, ozone generation, plasma Display screen, surface modification, waste water and waste gas treatment, etc. However, the external electrodes of these discharge systems are all metal, and are covered or pl...

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Problems solved by technology

However, the external electrodes of these discharge systems are all metal, and are covered or plated on the surface of the dielectric layer. Due to the difference in expansion coefficient between the dielectric layer and the metal, the dielectric layer is easily broken or the metal layer falls off during the discharge process. On the other hand, using this When the torch is used to process irregular materials, such as for the modification of the inner surface of the tube, the reflected plasma will short-circuit the two electrodes and generate a very hot plasma arc, which will burn the modified materials, especially organic materials.

Although some researchers use casing-type tap water as electrodes, the area of ​​the plasma torch is too small to make a difference in industry.

In particular, the atmospheric pressure glow plasma torch is used for fiber modification, the efficiency is relatively low, and the ultraviolet rays and ozone produced will cause certain harm to people and the environment

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