Method for preparing palm kernel shell activated carbon by catalytic activation

Abstract

The invention discloses a method for preparing palm kernel shell activated carbon by catalytic activation. The method comprises a carbonizing process, an activating process and a washing process; specifically, the method comprises the following steps: the carbonizing process of heating and carbonizing under the oxygen-isolating condition by using dried palm kernel shell as the material; an impregnating process of mixing the carbonized material with a potassium carbonate solution, so that the catalyst potassium carbonate solution is sufficiently impregnated into the carbonized material, wherein the mass percent concentration of the potassium carbonate solution is 1%-5%; and a weight ratio of the carbonized material to the potassium carbonate is 100:(0.5-3); the activating process of drying the moisture in the impregnated product and placing the dried impregnated product in activating equipment, and ventilating water vapor for activating; and the washing process of washing and drying the activated product to obtain the activated carbon. The method for preparing palm kernel shell activated carbon by catalytic activation can be used for saving the production cost and improving the catalytic effect of the potassium carbonate. And the adsorption value of the activated carbon methylene blue and iodine is respectively 240mg / g-285mg / g and 150mg / g-1300mg / g.

Description

Technical field: [0001] The invention belongs to the technical field of activated carbon and relates to the preparation of activated carbon, in particular to a method for preparing palm shell activated carbon by catalytic activation. Background technique: [0002] Activated carbon is a kind of material with developed pore structure, huge specific surface area and strong adsorption capacity prepared from carbonaceous materials such as wood and coal. It is widely used in environmental protection, national defense, chemical industry, food, medicine, textile and other fields. . In recent years, the shortage of coal and sawdust resources has become increasingly serious. Therefore, it is an important task for the development of my country's and the world's activated carbon industry to continuously develop raw materials for activated carbon production, explore new process conditions, and increase new varieties. Palm is an important economic crop. It is planted in many countries in...

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Problems solved by technology

[0006] Purpose of the invention: the purpose of this invention is to propose a method for preparing palm shell activated carbon by catalytic activation, so as to solve the problem of shortage of raw materials in the production of activated carbon