Preparation method of pressed active carbon and pressed active carbon

A technology for forming activated carbon and activated carbon, applied in the field of carbon materials, can solve the problems of low uniformity, high operation difficulty, low operation difficulty and uniformity, etc., and achieves the effects of easy control, low operation difficulty, and improved uniformity and adsorption capacity.

Active Publication Date: 2014-05-07
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and problems of high difficulty in operation and low uniformity in the prior art, and provide a method for preparing shaped activated carbon with low difficulty in operation and high uniformity and shaped activated carbon

Method used

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  • Preparation method of pressed active carbon and pressed active carbon
  • Preparation method of pressed active carbon and pressed active carbon
  • Preparation method of pressed active carbon and pressed active carbon

Examples

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preparation example Construction

[0032] The molding process of the activated carbon comprises a mold filling process and a freeze-drying process successively; the preparation method comprises the following processes successively:

[0033] Mixing process of raw materials: first add powdered activated carbon and binder to water to form an initial slurry, then put the initial slurry into a constant temperature water bath to heat, and stir the initial slurry to make the activated carbon and binder Disperse evenly in the aqueous solution to obtain activated carbon dispersion slurry;

[0034] Mold filling process: first inject the above-mentioned activated carbon dispersion slurry into the mold, when the activated carbon dispersion slurry fills the entire mold, the mold filling process ends;

[0035] Freeze-drying process: first put the above mold and the activated carbon dispersion slurry contained in the freezer together to freeze to form a hard block, then heat up and vacuumize, so that the water in the hard blo...

Embodiment 1

[0071] A preparation method of shaped activated carbon, the preparation method comprises the following processes in sequence:

[0072] Mixing process of raw materials: first add powdered activated carbon and binder to water to form an initial slurry, then put the initial slurry into a constant temperature water bath to heat at a heating temperature of 40–70°C, and stir the initial slurry , so that activated carbon and binding agent are uniformly dispersed in the aqueous solution to obtain activated carbon dispersion slurry; the mass ratio of activated carbon, binding agent and water in the initial slurry is: binding agent accounts for 10 wt.% of activated carbon, activated carbon accounts for 5 wt.% of water; the binder is an organic binder or an inorganic binder, wherein the organic binder is sodium carboxymethyl cellulose, polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl alcohol or at least one of phenolic resins; the inorganic binder is at least one of montmorill...

Embodiment 2

[0077] The basic content is the same as in Example 1, except that the binder accounts for 5 wt.% of the activated carbon, and the activated carbon accounts for 5 wt.% of the water; the bulk density of the shaped activated carbon is 0.13 g / cm 3 .

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Abstract

The invention provides a preparation method of pressed active carbon. According to the invention, a wet-process forming method is used for preparing the pressed active carbon, namely, an active carbon disperse pulp containing active carbon, a bonder and water is obtained firstly, then the pulp is injected into a corresponding mold according to required shape, then the freeze-drying is carried out on the mold and the active carbon disperse slurry contained in the mold, so as to obtain the pressed active carbon, wherein the pressed active carbon is formed by a plurality of active carbon sheets via laminating, each active carbon sheet is formed by a plurality of active carbon particles through bonding, a hole I formed among active carbon sheets is bigger than a hole II formed among the active carbon particles. Due to the adoption of the method, the operation difficulty is low, the evenness and adsorbing property of the pressed active carbon can be improved, the pressed active carbons in optional shapes can be prepared, and furthermore, the application scope is wide.

Description

technical field [0001] The invention relates to shaped activated carbon, which belongs to the field of carbon materials, in particular to a preparation method of shaped activated carbon and shaped activated carbon, which are specifically suitable for reducing the operation difficulty of shaped activated carbon and improving the uniformity of shaped activated carbon. Background technique [0002] Activated carbon is a carbonaceous adsorption functional material composed of microcrystalline carbon and amorphous carbon arranged in a "helical layer structure" of graphite-like microcrystals. It has stable properties, excellent adsorption performance, and acid and alkali resistance and heat resistance. , insoluble in water or organic solvents, is widely used in industrial "three wastes" treatment, food industry, medicine, catalyst carrier, semiconductor application, electric energy and high energy density substances (such as compacted or liquefied hydrogen, natural gas, etc.) stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 王睿钟小华刘立炳
Owner DONGFENG COMML VEHICLE CO LTD
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