Method for removing ash of active carbon
A technology of activated carbon and ash, which is applied in the field of activated carbon ash removal, and can solve the problems of decreased adsorption capacity of activated carbon, high ash content, and unsatisfactory ash removal effect
Inactive Publication Date: 2009-09-30
XINXIANG YUHUI ACTIVATED CARBON
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Problems solved by technology
[0002] There are two methods of preparing activated carbon, physical method and chemical method. Both of these methods use rinsing technology when removing the ash content of activated carbon, but the ash removal effect of this rinsing technology is not ideal, and the ash content of the prepared activated carbon is 3-4%. , high ash content
Method used
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Embodiment Construction
[0004] The method for removing ash in the present invention is that the present invention changes the original rinsing process into flocculation rinsing, that is, adding a flocculant, such as polyacrylamide or polyaluminum chloride, to the rinsing liquid, and its function is to coagulate the flocculant and salt ash After sinking to the bottom of the tank, the ash content in the activated carbon is reduced to ≤1.5%. The activated carbon has good adsorption performance.
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The invention discloses a method for removing ash of active carbon, and relates to a method for preparing the active carbon. The invention aims to provide the method for removing the ash of the active carbon, and the active carbon prepared by the method has low ash content and good adsorption property. The technical proposal is the method for removing ash of the active carbon comprises a rinsing process; and a flocculating agent containing polyacrylamide or polyaluminium chloride is added into rinse water. The method is used for preparing the active carbon with high accuracy.
Description
Technical field: [0001] The invention relates to a method for preparing activated carbon, in particular to a method for removing ash from activated carbon. Background technique: [0002] There are two methods of preparing activated carbon, physical method and chemical method. Both of these methods use rinsing technology when removing the ash content of activated carbon, but the ash removal effect of this rinsing technology is not ideal, and the ash content of the prepared activated carbon is 3-4%. , high ash content. The ash content is mainly calcium and magnesium-based salts, and the ash content mainly exists in the micropores of the activated carbon, which reduces the surface area of the micropores of the activated carbon, resulting in a decrease in the adsorption capacity of the activated carbon. Invention content: [0003] The purpose of this invention is to provide a method for removing activated carbon ash, the activated carbon prepared by this method has low ash ...
Claims
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Inventor 魏长贵
Owner XINXIANG YUHUI ACTIVATED CARBON