Flame-retardant activated carbon composite sheet

Abstract

The invention discloses a flame-retardant activated carbon composite sheet which comprises a metal layer, two bonding layers and two activated carbon layers, the metal layer is composed of an aluminum sheet, the bonding layers are composed of a bonding agent, and the corresponding bonding layers are correspondingly located on the upper surface and the lower surface of the metal layer; each activated carbon layer is adhered to and fully covers the corresponding upper surface and lower surface of the metal layer through the corresponding adhesive layer; one surface of the activated carbon layer is exposed to the outside; and flame-retardant particles are distributed in the bonding layer. The adsorption efficiency is greatly improved. The problem that traditional honeycomb activated carbon is easy to damage is avoided. And the risk that activated carbon is on fire under the high-temperature condition can be effectively prevented. The honeycomb activated carbon sheet can be made into planar and corrugated sheets, and a honeycomb-like structure can be formed through cross stacking of the two sheets to replace a traditional honeycomb activated carbon product. The device is wide in application range, low in cost and convenient to install and maintain.

Description

technical field [0001] The invention relates to a flame-retardant activated carbon composite sheet, in particular to an activated carbon composite sheet with safety performance, which belongs to the technical field of new materials and environmental protection. Background technique [0002] Activated carbon has good adsorption performance and has been widely used in the adsorption of harmful gases in air purification. At present, the finished products of activated carbon mainly include honeycomb activated carbon, granular activated carbon and activated carbon fiber blanket, which are most widely used in the treatment of organic waste gas including VOCs. Extensive is honeycomb activated carbon products. [0003] The porous hole structure of activated carbon has a very high specific surface area and has a good adsorption capacity for macromolecular gases. However, after the activated carbon is made into a honeycomb product, its adsorption efficiency is greatly reduced. The rea...

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Problems solved by technology

[0003] The porous hole structure of activated carbon has a very high specific surface area and has a good adsorption capacity for macromolecular gases. However, after the activated carbon is made into a honeycomb product, its adsorption efficiency is greatly reduced. The reason is to ensure the honeycomb product. Intensity, it is necessary to add auxiliary materials such as binders and clay to the activated carbon powder during production. After adding auxiliary materials, the content of activated carbon per unit volume (or surface area) of the finished product will be reduced, and these auxiliary materials are blocked and closed to a large extent. Activated carbon pores reduce the adsorption efficiency. The greater the proportion of auxiliary materials added, the lower the adsorption efficiency, but the strength of the finished product will decrease if the amount of auxiliary materials is reduced, which will easily lead to damage during transportation and use, especially the use of off-line desorption. When activated carbon is regenerated, repeated assembly, disassembly and transportation greatly increase the damage rate

[0004] In addition, in order to avoid the risk of fire during desorption and regeneration of traditional activated carbon products, high-temperature inert gas or steam will be used for desorption, and this method will greatly increase investment costs and desorption costs, or bring water pollution, such as using heat Air desorption can easily cause a fire, so to ensure safety, only a desorption temperature below 120°C can be used, and too low a desorption temperature is difficult to completely desorb organic solvents with high boiling points, resulting in the adsorption capacity of honeycomb activated carbon after regeneration. Gradual attenuation, reducing the service life of honeycomb activated carbon

[0005] Granular activated carbon and activated carbon fiber blankets also have problems such as low adsorption efficiency and large wind resistance, and these products are rarely used in the market

[0006] However, the zeolite runner currently used in the market can be desorbed by high-temperature hot air. Molecular sieve materials cause damage and are expensive to repair, so zeolite runners are not commonly used in the market

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