Method and device for regenerating irradiation active carbons of dielectric barrier discharge plasma
A dielectric barrier discharge and plasma technology, applied in separation methods, filter regeneration, filter separation, etc., can solve the problems of reduced treatment effect and changes in the structure of activated carbon, and achieves short treatment time, less activated carbon loss, and high regeneration rate. Effect
Inactive Publication Date: 2011-11-16
DALIAN UNIV OF TECH
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Problems solved by technology
However, due to the high temperature effect of the discharge plasma streamer, the activated carbon placed between the electrodes is ablated, resulting in changes in the structure of the activated carbon and a reduction in the treatment effect.
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Embodiment 1
[0028] Embodiment 1, the frequency of the AC high-voltage power supply 3 is 50 Hz, the effective value of the voltage is less than 50 kV, and the rated power is 1 kW. The shell of the generator 1 is made of 10mm thick plexiglass, the shape of the shell is a cuboid of 220mm x 220mm x 320mm, the high voltage electrode 5 is a stainless steel plate of 100mm x 100mm x 2mm, and the insulating medium 6 is quartz glass of 150mm x 150mm x 2.5mm Plate, the low-voltage mesh electrode 7 is an aluminum plate of 100mm×100mm×4mm, the round holes of φ=3mm are evenly distributed on the aluminum plate, the hole spacing is 2mm, the gap between the insulating medium 6 and the low-voltage mesh electrode 7 is 1mm, and the packed bed 2 It is a plexiglass box with the same size as the low-voltage mesh electrode 7. The height is adjusted according to the thickness of the activated carbon filling to ensure that the activated carbon is filled. 10mm, activated carbon filling thickness is 9mm. In additio...
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The invention relates to a method and a device for regenerating irradiation active carbons of dielectric barrier discharge plasma, which relate to the technical field of chemical industry adsorption separation and pollutant control. The device mainly comprises a dielectric barrier discharge plasma generator, an active carbon packed bed, an alternating current high-voltage power supply and an air pump, wherein the generator consists of a high-voltage electrode, an insulating medium and a low-voltage mesh electrode, the active carbon packed bed is arranged outside at the outer side of the dielectric barrier discharge plasma generator, active carbons to be treated are put in the active carbon packed bed, active substances and physical effect generated by the dielectric barrier discharge plasma generator irradiate the active carbons in the packed bed through the low-voltage mesh electrode, organic pollutants adsorbed on the active carbons are treated, and the adsorption performance of theactive carbons is restored. The method and the device have the advantages that the regeneration rate of the active carbons is high, the treating time is short, and the loss of the active carbons is less without secondary pollution.
Description
technical field [0001] The invention relates to the technical field of chemical adsorption separation and pollutant control, in particular to a method and device for regenerating activated carbon irradiated by dielectric barrier discharge plasma. Background technique [0002] Because activated carbon has a developed pore structure and a huge specific surface area, it has a good removal effect on organic pollutants in water and gas, so activated carbon adsorption technology has been widely used in environmental pollution treatment. At present, the world's annual consumption of activated carbon exceeds 1 million tons, and it is increasing year by year. [0003] Due to the high cost of activated carbon, the direct disposal of saturated activated carbon will cause waste of resources and secondary pollution, which greatly limits the application and promotion of activated carbon. Therefore, the regeneration of waste activated carbon has a good development trend. In recent years, ...
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IPC IPC(8): B01J20/34
Inventor 李杰靳清鲁娜吴彦李国锋
Owner DALIAN UNIV OF TECH