Method for preparing activated carbon fiber material with specific surface area reaching 2500m<2>/g

Abstract

The invention relates to a method for preparing an activated carbon fiber material with a specific surface area reaching 2500m<2> / g. the activated carbon fiber material is prepared from a viscose raw material by process steps of anti-inflaming agent spraying treatment, pre-oxidation dehydration treatment, carbonizing treatment, and activating treatment, wherein the prepared activated carbon fiber material has a large amount of porous structures and high specific surface area reaching 2500m<2> / g, and a part of crystals of the material are graphitized. According to the method, the continuous production of the activated carbon fiber material is realized; the specific surface area of the products reaches 2500m<2> / g; the reaction device is convenient, practical, energy-saving, and efficient and is convenient to operate and control.

Description

technical field [0001] The invention belongs to the field of activated carbon fiber material manufacturing, in particular to a specific surface area up to 2500m2 2 / g preparation method of activated carbon fiber material. Background technique [0002] With the progress of human civilization and the rapid development of modern industrialization, a large number of toxic gases, industrial sewage, and solid pollutants are produced, causing extremely serious harm to the living environment of human beings, especially industrial waste and sewage water on the surface and groundwater bodies. The pollution caused by the severe pollution of the scarce fresh water resources, the discharge of a large amount of SO2 gas, caused a large area of ​​acid rain, causing great harm to agriculture, animal husbandry, forestry, and construction. Excessive emission of CO2 gas has caused the greenhouse effect, resulting in the melting of polar glaciers, rising sea levels, harsh global climate, and f...

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Problems solved by technology

[0005]The research work shows that ACF is a high-efficiency physical adsorbent, and its adsorption capacity is proportional to its specific surface area. The specific surface area is generally lower than 2000m2 / g. The main reason is that the tensile strength of the product will decrease rapidly with the increase of the specific surface area, and it will often be broken, making continuous production impossible; another reason The activation temperature of the activation furnace to manufacture activated carbon fibers with a high specific surface area must be above 1100 degrees. The ordinary steel furnace body will collapse due to high temperature, so the continuous activation of activated carbon fiber materials higher than 2000m2 / g especially difficult to prepare

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