An internal boiling activated carbon treatment process

A technology of activated carbon and treatment methods, which is applied in the petroleum industry, other chemical processes, separation methods, etc., and can solve problems affecting the quality of activated carbon and incomplete recovery of activated carbon.

Active Publication Date: 2022-06-24
中科富海(中山)低温装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an internal boiling activated carbon treatment process to solve the problem of incomplete recovery of activated carbon and affecting the quality of activated carbon

Method used

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  • An internal boiling activated carbon treatment process
  • An internal boiling activated carbon treatment process
  • An internal boiling activated carbon treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1. First, use a 3-mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove large particles of activated carbon, and then use a 10-14 mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove small particles activated carbon;

[0041] Step 2. After the activated carbon screening is completed, put it in a 10-14 mesh sieve and rinse it with an alcohol-water mixture (70% alcohol concentration) in a cleaning tank to remove the dust attached to the surface of the activated carbon. Then, the activated carbon and the ethanol aqueous solution were placed in a decompression box, and the pressure was quickly reduced to a slight boiling of the solution, and then the pressure was rapidly increased to atmospheric pressure, repeated 5 times, to make the solution immersed in the internal voids of the activated carbon. The cleaning process should be gentle to prevent the activated carbon from breaking. The activated carbon contained in a single sieve shall not exceed ...

Embodiment 2

[0046] Step 1. First, use a 3-mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove large particles of activated carbon, and then use a 10-14 mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove small particles activated carbon;

[0047] Step 2. After the activated carbon screening is completed, put it in a 10-14 mesh sieve and rinse with alcohol-water mixture (alcohol concentration of 75%) in a cleaning tank to remove the dust attached to the surface of the activated carbon. Then, the activated carbon and the ethanol aqueous solution were placed in a decompression box, and the pressure was rapidly reduced until the solution boiled slightly, and then the pressure was rapidly increased to atmospheric pressure, repeated 5 times, so that the solution was immersed in the internal voids of the activated carbon. The cleaning process should be gentle to prevent the activated carbon from breaking. The activated carbon contained in a single sieve shall not exceed ...

Embodiment 3

[0052] Step 1. First, use a 3-mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove large particles of activated carbon, and then use a 10-14 mesh sieve to sieve 4.75mm×2.36mm of activated carbon to remove small particles activated carbon;

[0053] Step 2. After the activated carbon screening is completed, put it in a 10-14 mesh sieve and rinse with alcohol-water mixture (alcohol concentration of 78%) in a cleaning tank to remove the dust attached to the surface of the activated carbon. Then, the activated carbon and the ethanol aqueous solution were placed in a decompression box, and the pressure was rapidly reduced until the solution boiled slightly, and then the pressure was rapidly increased to atmospheric pressure, repeated 5 times, so that the solution was immersed in the internal voids of the activated carbon. The cleaning process should be gentle to prevent the activated carbon from breaking. The activated carbon contained in a single sieve shall not exceed ...

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Abstract

The invention relates to an activated carbon recovery processing technology and belongs to the field of activated carbon processing. An internal boiling activated carbon treatment process, the activated carbon is soaked in an alcohol-water solution; then the soaked activated carbon is heated in microwave radiation; finally, the activated carbon is dried in a vacuum system to obtain a recovered activated carbon product. The process uses the activated carbon internal boiling process, under the action of microwaves, combined with the control of air pressure, to regulate the internal boiling of the solution in the internal voids of the activated carbon, and promote the efficient discharge of harmful substances adsorbed inside the activated carbon. After testing, the specific surface area of ​​activated carbon prepared by this process reaches more than 99.5% of that of the original activated carbon, and the adsorption capacity is almost the same as that of the original activated carbon.

Description

technical field [0001] The invention relates to a secondary processing technology of activated carbon, in particular to an inner boiling activated carbon processing technology. Background technique [0002] Activated carbon is a black porous solid carbon. The main component of activated carbon is carbon, which is irregularly arranged in structure, with pores between cross-connections, which will produce carbon tissue defects during activation, low bulk density, large specific surface area, and strong adsorption performance, which is extremely versatile. A kind of industrial adsorbent, the specific surface area of ​​ordinary activated carbon is 500 ~ 1700m 2 / g. [0003] Activated carbon is a hydrophobic adsorbent made of carbon-based substances as raw materials through high-temperature carbonization and activation. Activated carbon contains a large number of micropores and has a huge specific surface area, which can effectively remove pigments and odors, and can remove mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01J20/20C01B32/36C01B32/366
CPCB01J20/3416B01J20/3475B01J20/3441B01J20/3483C01B32/36C01B32/366
Inventor 甄沛权杨兴平梁丽丽范宇超
Owner 中科富海(中山)低温装备制造有限公司
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