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Production method for activated carbon

A production method, activated carbon technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as difficult application and promotion, excessive dust on the surface, and poor strength of activated carbon, so as to reduce production costs and avoid serious pollution , the effect of high adsorption capacity

Inactive Publication Date: 2012-09-19
淮北市大华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon produced with this binder has poor strength and has a lot of floating dust on the surface, making it difficult to apply and promote

Method used

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  • Production method for activated carbon
  • Production method for activated carbon
  • Production method for activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Provide 100kg of anthracite powder and put it in the kneader, add an appropriate amount of water, keep stirring and kneading for 10 minutes, then add 7kg of corn starch adhesive, 10kg of active silicic acid, and 8kg of potassium polyphosphate, and continue kneading for 10 minutes. , the material has a certain degree of plasticity under pressure.

[0022] 2. Extrusion: Put the above-mentioned kneaded material with a certain degree of plasticity into a press equipped with a mold, the working pressure is 150kg / cm-250kg / cm, and after extrusion, it becomes a columnar strip with a diameter of 2.0mm-5.0mm; Columnar strips have certain wet strength and toughness, and will not stick to each other. After wind drying, the strength is further improved.

[0023] 3. Drying: Put the columnar strips into the dryer for drying, the speed of the dryer is 1-3 rpm, the temperature is 150°C-180°C, and the drying time is about 1 hour;

[0024] 4. Activation: Put the dried strips into the...

Embodiment 2

[0029] Coal fraction 100kg is provided, carboxymethyl cellulose 5kg, polyvinyl alcohol 2kg, active silicic acid 25kg, adopt the method described in embodiment 1, the main technical index of the gac produced after kneading, extruding, drying, activation is as follows:

[0030]

[0031] This activated carbon is used in pressure swing adsorption for CO 2 It can also be used in desulfurization, water treatment and other industries.

Embodiment 3

[0033] Provide 50kg of anthracite coal powder, 30kg of charcoal powder, 20kg of waste activated carbon, and 20kg of coal tar, 10kg of sodium metapolyphosphate, adopt the method described in Example 1, through kneading, extruding, drying, and activation, the technical indicators of the granular activated carbon produced are as follows :

[0034]

[0035] This granular activated carbon can be used for gas phase adsorption, such as gasoline gas recovery, benzene vapor recovery, and decolorization and deodorization.

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Abstract

The invention discloses a production method for activated carbon. The production method comprises the following steps of: adding binding agents such as polyphosphates, active silicic acid and the like to raw materials such as pulverized coal and the like, and obtaining a finished product after kneading, extruding, drying and activating the mixture. According to the production method, as the binding agents formed by matching one or several compounds are used for replacing coal tar, the serious pollution caused by using the coal tar as the binding agent can be avoided, and plenty of coal tar with the high cost is saved, and the production cost is reduced. The obtained activated carbon has high strength, very few floating dust and very high adsorptive capacity and can be used for water treatment, deodorization, decolorization, a catalyst carrier, the desorption of CO2 and N2 gasses in pressure swing adsorption, gas phase adsorption, solvent recovery, a carbon catalyst and the like.

Description

Technical field [0001] The invention relates to a production method of activated carbon. Background of the invention: [0002] Activated carbon is a carbon adsorbent with selective adsorption properties. It can be made of inorganic or organic carbon-containing materials such as coal, fruit shells, and wood chips, and is activated by physical high-temperature activation or chemical activation of pharmaceuticals. The activated carbon used for gas phase adsorption is mostly shaped or amorphous granular activated carbon, and both granular activated carbon and powdered activated carbon are used for liquid phase adsorption. Granular activated carbon is activated by carbonization of certain types of coal particles, or some types of coal are crushed to a certain fineness and then added with a binder, and then activated by kneading, extrusion, and carbonization. This kind of activated carbon is shaped activated carbon, which has good strength and a very wide range of uses. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 周之鹏周大可曹秀云
Owner 淮北市大华环保科技有限公司
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