Activated carbon fiber desorption method

Abstract

The invention discloses an activated carbon fiber desorption method. The method comprises the steps as follows: (1) activated carbon fiber adsorbing organic matter is placed in a vacuum environment; (2) the activated carbon fiber is energized until the temperature of the activated carbon fiber reaches or exceeds the boiling point of the adsorbed organic matter, and the organic matter is evaporatedfrom the activated carbon fiber; (3) the organic matter escaped from the activated carbon fiber in the vacuum environment is extracted from the vacuum environment. According to the activated carbon fiber desorption method, the activated carbon fiber is subjected to conductive desorption in the vacuum environment by use of the conductivity of the activated carbon fiber, so that the temperature ofthe activated carbon fiber reaches or exceeds the boiling point of the adsorbed organic matter, the organic matter in the activated carbon fiber can be desorbed thoroughly, the desorption cost is reduced, the desorption effect is good, and the adsorption function of the activated carbon fiber can be completely recovered after desorption, and the drying problem after wet desorption is solved.

Description

technical field [0001] The invention relates to an activated carbon fiber desorption method. Background technique [0002] Activated carbon fiber (ACF) is a new type, high-efficiency, and multi-functional adsorption material developed in the 1970s, and it is the third-generation product after powdered activated carbon and granular activated carbon. Activated carbon fiber has a large specific surface area (1000-3000m 2 / g) and abundant micropores, the volume of micropores accounts for more than 90% of the total pore volume. Activated carbon fiber has a larger adsorption capacity and faster adsorption kinetics than granular activated carbon. It has high adsorption efficiency for organic matter, anion and cation in liquid and gas phases, fast absorption and desorption speed, and can be regenerated and recycled. At the same time Acid resistance, alkali resistance, high temperature resistance, strong adaptability, good electrical conductivity and chemical stability, it is an id...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for desorption of activated carbon fibers, which overcomes the problems of high boiling point of organic matter, difficulty in desorption and high cost of desorption, good desorption effect, and can completely restore the adsorption function of activated carbon fibers after desorption