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Production method for spherical active carbon

A technology of spherical activated carbon and production method, which is applied in the direction of chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of large spherical activated carbon, low specific surface area, high mechanical strength, etc., and achieve high reliability, simple preparation process, The effect of cheap raw materials

Inactive Publication Date: 2018-03-02
江苏森森炭业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are three main methods for preparing spherical activated carbon: one is to use powdered activated carbon as raw material, and use a disc granulator to form pellets. Since the particle size of spherical activated carbon obtained by this method is relatively large, generally 1-10mm, It can only be used as an industrial grade adsorption material in the field of industrial decolorization or deodorization
The second is to use high softening point asphalt or phenolic resin as raw material, use surface tension as a ball, and then carbonize and activate pore formation. The spherical activated carbon prepared by this method has a high specific surface area and high mechanical strength, but the particle size is average. In 0.6-1.0mm, it is only suitable for medical and military fields
The third is to prepare spherical carbon by using the emulsion ball forming method. The particle size of the material is micron or nanometer, but the specific surface area is less than 100m 2 / g, so it can only be used as a filler in chemical and other fields

Method used

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  • Production method for spherical active carbon

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Effect test

Embodiment 1

[0020] The production method of spherical activated carbon of the present invention may further comprise the steps:

[0021] (1) Mix 100g of glucose, 1g of rhamnolipid, 5g of cetyltrimethylammonium bromide, 10g of humic acid and 1000g, and ultrasonically react at 30°C for 0.5h to dissolve the glucose and mix all the raw materials uniform. Then transfer to the hydrothermal synthesis kettle, conduct hydrothermal reaction at 160°C for 18 hours, filter after the reaction is completed, wash the precipitated product, and obtain hydrothermal carbon spheres;

[0022] (2) The hydrothermal charcoal spheres prepared in step (1) were raised to 500°C at a heating rate of 12°C / min under the protection of nitrogen, kept for 15 hours, and cooled to room temperature naturally to obtain carbonized charcoal spheres;

[0023] (3) Mix the carbonized carbon spheres obtained in step (2) with sodium hydroxide in a mass ratio of 1:2, and raise the temperature to 850° C. at a rate of 5° C. / min under n...

Embodiment 2

[0025] The production method of spherical activated carbon of the present invention may further comprise the steps:

[0026] (1) Mix 110g of glucose, 1g of rhamnolipid, 4g of cetyltrimethylammonium bromide, 11g of humic acid and 1000g, and ultrasonically react at 28°C for 1 hour to dissolve the glucose and mix all the raw materials evenly . Then transfer to a hydrothermal synthesis kettle, conduct a hydrothermal reaction at 180°C for 18 hours, filter after the reaction is completed, wash the precipitated product, and obtain hydrothermal carbon spheres;

[0027] (2) The hydrothermal carbon spheres prepared in step (1) were raised to 550° C. at a heating rate of 10° C. / min under nitrogen protection, kept for 8 hours, and naturally cooled to room temperature to obtain carbonized carbon spheres;

[0028] (3) Mix the carbonized carbon spheres obtained in step (2) with sodium hydroxide in a mass ratio of 1:3, raise the temperature to 800° C. at a rate of 8° C. / min under nitrogen pr...

Embodiment 3

[0030] The production method of spherical activated carbon of the present invention may further comprise the steps:

[0031] (1) Mix 120g of glucose, 1g of rhamnolipid, 5g of cetyltrimethylammonium bromide, 12g of humic acid and 1000g, and ultrasonically react at 25°C for 1 hour to dissolve the glucose and mix all the raw materials evenly . Then transfer to a hydrothermal synthesis kettle, conduct a hydrothermal reaction at 200°C for 20 hours, filter after the reaction is completed, wash the precipitated product, and obtain hydrothermal carbon spheres;

[0032] (2) The hydrothermal charcoal spheres prepared in step (1) were raised to 600°C at a heating rate of 10°C / min under the protection of nitrogen, kept for 6 hours, and cooled to room temperature naturally to obtain carbonized charcoal spheres;

[0033] (3) Mix the carbonized carbon spheres obtained in step (2) with sodium hydroxide at a mass ratio of 1:5, and raise the temperature to 900°C at a rate of 10°C / min under nit...

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Abstract

The invention discloses a production method for spherical active carbon. The production method comprises the following steps: (1) mixing glucose, an anionic surfactant, a cationic surfactant, humic acid and water, carrying out a hydrothermal reaction, and carrying out filtering so as to obtain hydrothermal carbon spheres; (2) carbonizing the hydrothermal carbon spheres prepared in the step (1) under the protection of nitrogen gas so as to obtain carbonized carbon spheres; and (3) mixing the carbonized carbon spheres obtained in the step (2) with an activating agent, and carrying out activationunder the protection of nitrogen gas so as to obtain the spherical active carbon. The spherical active carbon prepared by using the production method provided by the invention has the advantages of small particle size and great specific surface area.

Description

technical field [0001] The invention relates to the technical field of activated carbon preparation, in particular to a production method of spherical activated carbon. Background technique [0002] As a new type of carbonaceous functional material, spherical activated carbon not only has high specific surface area, strong surface chemical modification, acid and alkali resistance, but also has high bulk density and mechanical strength as well as good thermal and electrical conductivity. Compared with , columnar activated carbon, the specific surface area of ​​this material is more than twice that of these materials, and it can be widely used in the field of adsorption. [0003] At present, there are three main methods for preparing spherical activated carbon: one is to use powdered activated carbon as raw material, and use a disc granulator to form balls. Because the particle size of spherical activated carbon obtained by this method is relatively large, generally 1-10mm, I...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/318
CPCC01P2004/61C01P2006/12
Inventor 刘杰徐静刘敏
Owner 江苏森森炭业科技有限公司
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