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Industrial regeneration process of waste powdered activated carbon

A technology of powdered activated carbon and waste activated carbon, which is applied in the petroleum industry, filter regeneration, inorganic chemistry, etc., can solve the problems of reducing ablation rate, achieve the effect of reducing ablation rate, strong operability, and increasing activation raw materials

Pending Publication Date: 2020-09-01
山东清博生态材料综合利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activation of waste powdered activated carbon in the present invention utilizes ordinary rotary kiln for industrial production, carbonization and activation are integrated, and on the basis of reducing energy consumption and equipment costs, the problem of powdered carbon dust is effectively solved, and ablation is greatly reduced In this process, organic carbon source materials are used as the binder without adding new impurities, and the regeneration and activation of waste powder activated carbon can be realized to the greatest extent. The purity is high and the operability is strong, which is very suitable for industrialization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of industrial regeneration process of waste powder activated carbon, concrete steps are as follows:

[0024] Step 1. Take 1 ton of waste powder activated carbon and dry it until the water content is below 5%, then mix it evenly according to the mass ratio of waste powder activated carbon: binder: water is 50:10:40, and put the mixed material into granulation Machine granulation, and then dry the granular waste activated carbon to less than 5% moisture, wherein the binder is starch;

[0025] Step 2. Before activation, wet the dried activated carbon to about 30% moisture, and then feed it into the rotary kiln through a rotary feeder. Set the activation temperature to 850°C and the activation time to 60 minutes;

[0026] Step 3. Grinding the regenerated granular activated carbon in a pulverizer to obtain regenerated powdered activated carbon.

[0027] After testing, the iodine adsorption value of the above-mentioned regenerated powdered activated carbon is 850mg / g....

Embodiment 2

[0029] Step 1. Take 1 ton of waste powder activated carbon and dry it until the water content is below 5%, then mix it evenly according to the mass ratio of waste powder activated carbon: binder: water is 54:2:44, and put the mixed material into granulation Machine granulation, and then dry the granular waste activated carbon to below 5% of the moisture; wherein the binder is a mixture of starch, turnip powder, and waste molasses, and its mass ratio is 2:1:1;

[0030] Step 2. Before activation, wet the dried activated carbon to about 10% moisture, and then feed it into the rotary kiln through a rotary feeder. Set the activation temperature to about 800°C and the activation time to about 30 minutes; Step 3. Put the regenerated Granular activated carbon is ground in a mill to obtain regenerated powdered activated carbon.

[0031] After testing, the iodine adsorption value of the above-mentioned regenerated powdered activated carbon is 799mg / g.

Embodiment 3

[0033] Step 1. Take 1 ton of waste powder activated carbon and dry it until the water content is below 5%, then mix it evenly according to the mass ratio of waste powder activated carbon: binder: water is 52:4:44, and put the mixed material into granulation Machine granulation, and then dry the granular waste activated carbon to a moisture content below 5%, wherein the binder is cellulose carboxylate;

[0034] Step 2. Before activation, wet the dried activated carbon to about 30% moisture, and then feed it into the rotary kiln through a rotary feeder. Set the activation temperature to about 750°C and the activation time to about 90 minutes;

[0035] Step 3. Grinding the regenerated granular activated carbon in a pulverizer to obtain regenerated powdered activated carbon.

[0036] After testing, the iodine adsorption value of the above-mentioned regenerated powdered activated carbon is 763mg / g.

[0037] It can be seen from the above examples that the regenerated powdered activ...

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Abstract

The invention relates to the field of comprehensive utilization of environment-friendly and hazardous solid waste resources, and particularly provides an industrial regeneration process of waste powdered activated carbon. By adopting a mode of firstly granulating and then carbonizing and activating in a rotary kiln, the influence of flying dust of powdered carbon is avoided, and the ablation rateis greatly reduced; the granulated activated carbon is wetted before feeding, so that the inhibition effect of introducing water vapor into the rotary kiln on flaming of a fuel machine is avoided, pore forming in the activation process is facilitated, and the activation effect is effectively achieved; the binder adopts an organic carbon source material with few impurities, no new impurity is added, the binder is used as a new carbon source, the activation raw material is increased, the operability is strong, and the method is suitable for industrialization.

Description

technical field [0001] The invention relates to the fields of environmental protection and comprehensive utilization of hazardous waste and solid waste resources, and specifically provides an industrial regeneration process of waste powder activated carbon. Background technique [0002] Activated carbon is widely used in the treatment of waste water and waste gas because of its large specific surface area and good adsorption performance. In view of environmental protection and cost considerations, the regeneration of waste powdered activated carbon has attracted more and more attention. At present, the main measures are direct regeneration or granulation of waste powder activated carbon into columnar activated carbon products. For example, the patent of application number 2012105567353 introduces a method of using tar and starch as binders to prepare columnar activated carbon and regenerate it. However, this method only Coal-based activated carbon is not suitable for indust...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/30B01J20/20C01B32/366
CPCB01J20/3416B01J20/3483B01J20/3028B01J20/3042C01B32/366
Inventor 张学雷魏国强徐继任李海涛程鹏纪秀阳高锦鹏陈维英彭辉张余鑫穆广杰李平
Owner 山东清博生态材料综合利用有限公司
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