Preparation method of activated carbon or activated carbon fiber and preparation method of purification medium

Abstract

The invention relates to a preparation method of active carbon or an active carbon fiber and a preparation method of a purification medium. A nano zinc dioxide photocatalyst grows on the active carbon or the active carbon fiber, then the active carbon or the active carbon fiber is processed into an active carbon air purification filter screen or an active carbon fiber air purification filter screen, and the recycling of the active carbon or the active carbon fiber is realized by the catalytic action of an ultraviolet light source. The photocatalytic regeneration of the active carbon or the active carbon fiber can greatly reduce energy consumption of the traditional heat regeneration technology, reduces air pollution and energy waste, and facilitates energy conservation and emission reduction. Further, a photocatalytic technology is combined with an active carbon or an active carbon fiber absorption technology, a high-concentration reaction location is provided for photocatalysis in the air purification by using an absorption action of the active carbon or the active carbon fiber, and the photocatalytic efficiency is improved.

Description

technical field [0001] The invention relates to the field of regenerated activated carbon or activated carbon fiber, in particular to a preparation method of activated carbon or activated carbon fiber and a preparation method of a purification medium. Background technique [0002] Chemical adsorption is to pass the polluted air through the adsorbent layer, so that the pollutants are adsorbed to achieve the purpose of purifying the air. Commonly used adsorbents include porous carbon materials, activated carbon fibers, new activated carbons, zeolites, silica gel, molecular sieves, porous clay ores, and activated alumina, among which activated carbon and activated carbon fibers are the most widely used. These adsorbents not only have a large specific surface area, but also have a suitable pore size distribution. Highly developed pore structure - capillary constitutes a strong adsorption force field. When gas pollutants hit the capillary, the strong adsorption force field arou...

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Problems solved by technology

However, this method also has problems that are difficult to solve: 1) the loss of activated carbon or activated carbon fiber is often large during the regeneration process; (2) the adsorption capacity of activated carbon or activated carbon fiber will decrease significantly after regeneration; (3) the tail gas generated during regeneration will cause secondary air pollution