Spherical activated carbon and preparation method thereof

A technology of activated carbon and spherical shape, which is applied in the field of spherical activated carbon and its preparation. It can solve the problems of complex preparation process, unstable product quality, and low production efficiency. Effect

Inactive Publication Date: 2014-09-10
SICHUAN CHUANGYUE CARBON MATERIAL
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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 solve the disadvantages of the prior art preparation method such as complex process, low production efficiency, high energy consumption, unstable product quality, etc., and provide a kind of spherical activated carbon which is easy to prepare, high in quality, high in efficiency and high in quality and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, a spherical activated carbon is made of the following raw materials in parts by weight:

[0031] Take 50 parts of coal tar-based pitch with a softening point of 90°C, 35% carbon residue, 0% toluene insoluble matter, and an ash content of less than 500ppm, 1 part of phenolic resin, 5 parts of naphthalene, and 1 part of sulfur.

[0032] Concrete preparation method comprises the following steps:

[0033] a. Grind 50 parts of coal tar-based asphalt and aromatic hydrocarbon synthesis-based asphalt with a softening point of 90°C, 35% of residual carbon, 0% of toluene insoluble matter, and ash content of less than 500ppm, 1 part of phenolic resin, 5 parts of naphthalene, and 1 part of sulfur. After mixing, use the general spray method or centrifugal method to form balls to obtain spherical asphalt with a diameter of 0.1mm, and sieve;

[0034] b. In a mixed atmosphere of air atmosphere and hydrogen chloride 100:0.1, heat treatment at a temperature of 120°C ...

Embodiment 2

[0041] In this embodiment, a spherical activated carbon is made of the following raw materials in parts by weight:

[0042] Take 200 parts of aromatic synthetic asphalt and petroleum asphalt with a softening point of 180°C, 60% carbon residue, 50% toluene insoluble matter, and ash content less than 500ppm, 20 parts of epoxy resin, 40 parts of methyl naphthalene, and 5 parts of sulfide.

[0043] Concrete preparation method comprises the following steps:

[0044] a. 200 parts of aromatic synthetic asphalt and petroleum asphalt with a softening point of 180°C, 60% carbon residue, 50% toluene insoluble matter, and ash content less than 500ppm, 20 parts of epoxy resin, 40 parts of methyl naphthalene, and 5 parts of sulfide , after being uniformly ground and mixed, the general-purpose spray method or centrifugal method is used to form balls to obtain spherical asphalt with a diameter of 1.5mm, and sieved;

[0045] b. In a mixed atmosphere of air and nitric acid at a ratio of 100:10...

Embodiment 3

[0052] In this embodiment, a spherical activated carbon is made of the following raw materials in parts by weight:

[0053] Take 150 parts of coal tar-based asphalt, aromatics synthetic asphalt, and petroleum-based asphalt mixed asphalt with a softening point of 150°C, 50% carbon residue, 30% toluene insoluble matter, and an ash content of less than 500ppm. Phenolic resin, epoxy resin, furfural resin , 15 parts of a mixture of urea-formaldehyde resin and furan resin, 30 parts of anthracene, and 3 parts of anthraquinone.

[0054] Concrete preparation method comprises the following steps:

[0055] a. Mix 150 parts of coal tar-based asphalt, aromatic hydrocarbon synthesis-based asphalt, and petroleum-based asphalt with a softening point of 150°C, 50% carbon residue, 30% toluene insoluble matter, and an ash content of less than 500 ppm; phenolic resin, epoxy resin, 15 parts of a mixture of furfural resin, urea-formaldehyde resin, and furan resin, 30 parts of anthracene, and 3 par...

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Abstract

The invention discloses spherical activated carbon, and belongs to the field of production of activated adsorption materials. A preparation method includes the steps that pitch, thermosetting resin, aromatic hydrocarbon molecules and oxidation accelerators are evenly ground and mixed and then balled through a spraying method or a centrifugal method, and spherical pitch with the diameter ranging from 0.1 mm to 1.5 mm is obtained and screened; secondly, in an air atmosphere or a mixed atmosphere of air and oxidation promotion gas, cured spherules are obtained through thermal treatment; thirdly, porous cured spherules are obtained through extraction of composite steeping liquor; fourthly, the cured spherules are steeped into a thermosetting resin solution, the solution is filtered out, and the spherules are dried; fifthly, rapid thermal treatment is conducted on the spherules in the air atmosphere or the mixed atmosphere of air and oxidation promotion gas, and then spherules are obtained; sixthly, carbonization activation is conducted on the non-melting pitch spherules in the active atmosphere, and then the spherical activated carbon is prepared. The spherical activated carbon has the advantages that the specific surface area ranges from 800 m<2> / g to 1700 m<2> / g, the strength of the spherical activated carbon is larger than 95%, the strength is high, the process is simple, production efficiency is high, and cost is low.

Description

technical field [0001] The invention belongs to the field of active adsorption material production, and in particular relates to a spherical activated carbon and a preparation method thereof. Background technique [0002] Pitch-based spherical activated carbon is a high-performance activated carbon successfully developed by industrialized countries such as Japan, the United States, Germany and the former Soviet Union in the late 1970s. It has good sphericity, high packing density, good fluidity, and large adsorption capacity. With excellent characteristics such as fast adsorption and desorption rate, it has entered the stage of industrialization abroad and has been popularized and applied in the fields of blood purification, catalyst carrier, organic solvent recovery, precious metal recovery, and chromatographic packed columns. The preparation method is as follows. Generally, asphalt and aromatic solvent (pore forming agent) are mixed, spheroidized in a special way, and then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/318C01B32/324C01B32/336
Inventor 伍孝李于鲍烈华
Owner SICHUAN CHUANGYUE CARBON MATERIAL
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