Low-temperature plasma regeneration system and method for inactivated activated carbon

Abstract

The invention discloses a low-temperature plasma regeneration system and method for inactivated activated carbon. The system comprises a gas supply system for providing gas and water vapor, a plasma reaction device and a tail gas treatment device, wherein the plasma reaction device comprises an upper electrode, a grounded lower electrode, a regeneration reactor arranged between the electrodes anda high-voltage alternating-current power supply connected with the upper electrode; a kick-out device is arranged in the regeneration reactor, an air inlet is formed in the center of the top of the reactor, and air outlets are formed in the periphery of the reactor. The device is simple and compact in structure and convenient to operate, reaction and premixing are integrated, and a large amount oflabor cost is saved; the energy consumption required by regeneration is low, pollutants are not generated, and more energy is saved and the environment is protected; the method is stronger in oxidation effect, higher in regeneration efficiency and better in effect; the total area of plasma direct irradiation is larger in a limited space, the energy utilization rate is increased, and activated carbon is fully regenerated.

Description

technical field [0001] The invention relates to a regeneration system and method, in particular to a low-temperature plasma regeneration system and method for deactivated activated carbon. Background technique [0002] Activated carbon has a huge specific surface and rich pore structure, and is an excellent adsorbent. It is generally prepared by physical or chemical activation. The process is complex and expensive. The price of activated carbon with an iodine value of 1,000 is as high as 10,000 to 12,000 yuan / ton , so repeated regeneration of deactivated activated carbon has high economic value. [0003] Commonly used activated carbon regeneration methods include thermal regeneration, ultrasonic regeneration, electrochemical regeneration, biological regeneration, wet oxidation regeneration, and low-temperature plasma regeneration. The thermal regeneration method is currently the most widely used and most mature method. The thermal regeneration desorbs the adsorbate from the...

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Problems solved by technology

At present, low-temperature plasma regeneration technology has developed to a certain extent, but there are still many problems in terms of equipment and process methods, such as low plasma regeneration efficiency, pollution of chemical reagents, etc.

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