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[Chemical Knowledge]：Manufacturing method and process of activated carbon

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The manufacturing method of activated carbon and its application in the field of chemical production raw materials

Abstract

activated carbon is an important adsorbent widely used in the field of chemical production raw materials, with high specific surface area, high porosity, good adsorption performance and other advantages. This paper introduces the manufacturing method of activated carbon and its application in the field of chemical production raw materials, including physical method, chemical method and physical chemical method, as well as the application of activated carbon in gas adsorption, liquid adsorption, catalyst carrier and so on.

keywords: activated carbon, manufacturing methods, raw materials for chemical production, adsorbent

1. introduction

activated carbon is a kind of material with excellent adsorption properties, widely used in the field of chemical production of raw materials. Because of its unique physical and chemical properties, activated carbon plays an important role in gas adsorption, liquid adsorption, catalyst carrier and so on. This article will detail the manufacturing method of activated carbon and its application in the field of chemical production raw materials.

2. activated carbon manufacturing method

1. physical method

physical method mainly includes carbonization method and activation method. The carbonization method is to pyrolyze the raw materials at high temperature to convert them into carbon structure. The activation rule is based on carbonization, through physical methods (such as water vapor, carbon dioxide, etc.) to activate carbon to improve its specific surface area and porosity.

2. Chemical method

The chemical method is mainly to chemically treat the raw materials through chemical reagents to convert them into activated carbon. Commonly used chemical reagents are phosphoric acid, potassium hydroxide and so on.

3. Physicochemical method

The physicochemical method is a method that combines physical and chemical methods, including chemical activation and physico-chemical activation. Chemical activation method is the introduction of chemical reagents in the carbonization process, so that the carbonization process and activation process at the same time. Physical-chemical activation law is the first physical activation after carbonization, and then chemical activation.

3. of activated carbon in the chemical production of raw materials in the field of application

1. gas adsorption

activated carbon because of its excellent adsorption performance, widely used in gas adsorption, such as adsorption of formaldehyde in the air, benzene and other harmful gases, and industrial waste gas sulfur dioxide, nitrogen oxides and other pollutants.

2. liquid adsorption

activated carbon can also be used for liquid adsorption, such as water treatment in the decolorization, deodorization, removal of organic matter, etc., as well as oil decolorization, desulfurization and so on.

3. Catalyst carrier

activated carbon as the catalyst carrier can improve the dispersion and stability of the catalyst and improve the catalytic efficiency. For example, in petroleum processing, activated carbon can be used as a catalyst carrier for catalytic cracking, hydrogenation and other processes.

4. conclusion

activated carbon as an important adsorbent plays an important role in the field of chemical production raw materials. Its manufacturing methods include physical, chemical and physical chemical methods, and other methods, and the appropriate manufacturing method can be selected according to the needs of raw materials and products. The application of activated carbon in gas adsorption, liquid adsorption and catalyst carrier provides important support and guarantee for chemical production.

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