Active carbon adsorption purification system and active carbon adsorption purification method adopting vacuum electric heating regeneration

Abstract

The invention discloses an active carbon adsorption purification system and an active carbon adsorption purification method adopting vacuum electric heating regeneration. The system comprises a filter, a cooler and at least more than two active carbon adsorbers, wherein an adsorption purification unit is arranged in the active carbon adsorber, and comprises an active carbon fiber bed layer, electrodes, a temperature sensor and an enclosure structure, the active carbon fiber bed layer is formed by overlapping active carbon fiber fabrics, the temperature sensor is arranged in the bed layer, theelectrodes are arranged on any two opposite end surfaces of the bed layer, and the electrode adopts a mode that an electric-conducting band and an active carbon fiber fabric are overlapped layer by layer or the electric-conducting band and plural layers of active carbon fiber fabrics are overlapped. According to the invention, the electric-conducting bands are uniformly arranged in the end surfacearea of the bed layer to ensure the uniform distribution of the bed layer current in the electric heating process, so that the uniform temperature rise of the active carbon bed layer is realized, organic matter desorption is thorough, regeneration is complete, and the electric heating filtering core can keep good adsorption performance for a long time.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to an activated carbon adsorption purification system and method using vacuum electric heating regeneration. It can be used for industrial VOCs exhaust gas treatment, and can also be used for renewable chemical protection of toxic and harmful gases and purification of VOCs in indoor air. Background technique [0002] At present, the activated carbon adsorption treatment technology widely used in air pollution control projects uses activated carbon as an adsorbent to absorb pollutants in the air. After the activated carbon is saturated, an external heating medium (industrial water vapor, hot nitrogen or hot air) and activated carbon are introduced Perform heat exchange to heat up the activated carbon. During the heating process, the adsorbed pollutants are continuously desorbed from the activated carbon and converted into high-concentration pollutant vapors for condensa...

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Problems solved by technology

[0009] In view of the problems existing in the existing adsorption treatment technology using external heating medium regeneration, the present invention provides an activated carbon adsorption purification system and method using vacuum electric heating regeneration, which overcomes the problems of large regeneration energy consumption, incomplete regeneration, and condensation load in the prior art. Large, secondary pollution, deterioration of recyclables, etc., truly realize the recovery and treatment process of organic waste gas "high efficiency, energy saving, safety, economy, zero emissions"

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