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Regeneration method of active carbon for VOC adsorption

A technology of activated carbon and reaction, applied in the field of regeneration of activated carbon for VOC adsorption, can solve problems such as difficulty in regeneration, achieve rapid regeneration effect, improve electrolysis effect, and ensure the effect of regeneration rate

Inactive Publication Date: 2018-08-10
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a regeneration method of activated carbon for VOC adsorption, which solves the problem of difficult regeneration in the prior art, not only can ensure the regeneration rate of activated carbon, but also reduces the difficulty of regeneration, and is suitable for mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for regenerating activated carbon for VOC adsorption, comprising the steps of:

[0031] Step 1, add deactivated activated carbon into sodium chloride solution and ultrasonically disperse for 20 minutes to obtain a mixed solution;

[0032] Step 2, put the mixed solution into a vacuum distillation reactor to distill and react until completely evaporated to obtain the mixture;

[0033] Step 3, putting the mixture into absolute ethanol and heating and stirring for 2 hours to obtain activated carbon ethanol liquid;

[0034] Step 4, add methanol to the activated carbon ethanol solution and stir until completely mixed, then seal the micro-electrolysis reaction for 2 hours to obtain a suspended mixed alcohol solution;

[0035] In step 5, the suspended mixed alcohol solution is filtered to obtain a precipitate, and the regenerated activated carbon is obtained after drying.

[0036] The concentration of the sodium chloride solution in the step 1 is 0.02mol / L, and the c...

Embodiment 2

[0044] A method for regenerating activated carbon for VOC adsorption, comprising the steps of:

[0045] Step 1, add deactivated activated carbon into sodium chloride solution and ultrasonically disperse for 40 minutes to obtain a mixed solution;

[0046] Step 2, put the mixed solution into a vacuum distillation reactor to distill and react until completely evaporated to obtain the mixture;

[0047] Step 3, putting the mixture into absolute ethanol, heating and stirring for 4 hours to obtain activated carbon ethanol liquid;

[0048] Step 4, add methanol to the activated carbon ethanol solution and stir until completely mixed, then seal the micro-electrolysis reaction for 5 hours to obtain a suspended mixed alcohol solution;

[0049] In step 5, the suspended mixed alcohol solution is filtered to obtain a precipitate, and the regenerated activated carbon is obtained after drying.

[0050] The concentration of the sodium chloride solution in the step 1 is 0.08mol / L, and the conc...

Embodiment 3

[0058] A method for regenerating activated carbon for VOC adsorption, comprising the steps of:

[0059] Step 1, add deactivated activated carbon into sodium chloride solution and ultrasonically disperse for 30 minutes to obtain a mixed solution;

[0060] Step 2, put the mixed solution into a vacuum distillation reactor to distill and react until completely evaporated to obtain the mixture;

[0061] Step 3, putting the mixture into absolute ethanol and heating and stirring for 3 hours to obtain activated carbon ethanol liquid;

[0062] Step 4, add methanol to the activated carbon ethanol solution and stir until completely mixed, then seal the micro-electrolysis reaction for 4 hours to obtain a suspended mixed alcohol solution;

[0063] In step 5, the suspended mixed alcohol solution is filtered to obtain a precipitate, and the regenerated activated carbon is obtained after drying.

[0064] The concentration of the sodium chloride solution in the step 1 is 0.06mol / L, and the c...

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Abstract

The invention belongs to the technical field of an environmental protection material, and particularly relates to a regeneration method of active carbon for VOC adsorption. The method comprises the following steps that 1, devitalized active carbon is added into a sodium chloride solution to be subjected to ultrasonic dispersion for 20 to 40min to obtain a mixed solution; 2, the mixed solution is put into a reduced pressure distillation reaction kettle for distillation reaction until the complete evaporation is realized; a mixture is obtained; 3, the mixture is put into absolute ethyl alcohol for heating and stirring reaction for 2 to 4h to obtain an active carbon ethyl alcohol solution; 4, methyl alcohol is added into the active carbon ethyl alcohol solution to be uniformly stirred until the complete mixing is realized; then, sealing and microelectrolysis reaction are performed for 2 to 5h to obtain a suspended mixed alcohol solution; 5, the suspended mixed alcohol solution is filteredto obtain precipitates; after the drying, the regenerated active carbon is obtained. The regeneration method solves the problem of regeneration difficulty in the prior art; the regeneration rate of the active carbon can be ensured; the regeneration difficulty is reduced; the regeneration method is suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of environmental protection materials, and in particular relates to a method for regenerating activated carbon for VOC adsorption. Background technique [0002] Activated carbon regeneration is a good way to comprehensively utilize waste activated carbon, save energy and reduce consumption. The activated carbon industry is also very concerned about this. [0003] In the past, the regeneration of waste activated carbon usually used two kinds of chemical regeneration and thermal regeneration. Chemical regeneration is to treat waste activated carbon with chemical liquid to make it active again. For example, the waste activated carbon for glutamic acid is regenerated with acid and alkali, and the waste activated carbon for wine is regenerated with ethanol or acid and alkali. The regeneration effect of this method is poor. Thermal regeneration is to regenerate spent activated carbon by means of external heating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/3416B01J20/3441B01J20/3475B01J20/3483Y02A50/20
Inventor 刘伟
Owner SHAOXING UNIVERSITY
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