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Regeneration method of adsorbed and saturated activated carbon

A technology of activated carbon and calcination, which is applied in the field of regeneration of adsorbed saturated activated carbon, can solve the problems of easy explosion and inapplicability, and achieve the effects of saving resources, simple operation and reducing costs.

Active Publication Date: 2018-08-03
常熟市滨江化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not suitable for regeneration of activated carbon saturated with 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di (tert-butylperoxy)hexane is an organic peroxide, which is prone to explosion and other dangers when heated; and it is impossible to remove 2,5-dimethyl-2,5-bis(tert-butylperoxy) Butyl peroxy) hexane is separated from activated carbon, while washing with organic solvents will introduce other impurities into activated carbon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Mix adsorbed 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane saturated activated carbon with water at a mass ratio of 1:10, at a temperature of 75°C and a vacuum of -80kPa Distilled under reduced pressure for 2 hours; put the obtained activated carbon into a muffle furnace, raise the temperature to 600°C within 1 hour, and heat-preserve and calcinate for 4 hours to obtain regenerated activated carbon; the obtained fractions were left to stand for stratification, and the obtained organic layer was 2,5-di Methyl-2,5-bis(tert-butylperoxy)hexane, and the resulting aqueous layer was reused in the vacuum distillation process.

Embodiment 2

[0033] Mix 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane saturated activated carbon with water at a mass ratio of 1:20, at a temperature of 80°C and a vacuum of -53.9kPa Distill under reduced pressure for 4 hours; put the obtained activated carbon into a muffle furnace, raise the temperature to 700°C within 1.5 hours, and heat-preserve and calcinate for 2 hours to obtain regenerated activated carbon; the obtained fractions were left to stand for stratification, and the obtained organic layer was 2, 5-Dimethyl-2,5-bis(tert-butylperoxy)hexane, and the obtained water layer was reused in the vacuum distillation process.

Embodiment 3

[0035] Mix adsorbed 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane saturated activated carbon with water at a mass ratio of 1:30, at a temperature of 80°C and a vacuum of -70kPa Distilled under reduced pressure for 12 hours; put the obtained activated carbon into a muffle furnace, raise the temperature to 500°C within 2 hours, and heat-preserve and calcined for 10 hours to obtain regeneration activity; Dimethyl-2,5-bis(tert-butylperoxy)hexane was saturated, and the obtained water layer was reused in the vacuum distillation process.

[0036]The regenerated activated carbon obtained in Examples 1 to 3 is reused, specifically, the regenerated activated carbon is put into 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane during the production process of the crude product for decolorization link, the results show that the color number of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane can reach 40-50 black Zeng, which can meet the actual production needs; and the regenerated activated carbon ...

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Abstract

The invention provides a regeneration method of adsorbed and saturated activated carbon. The preparation method comprises the following steps: mixing the adsorbed and saturated activated carbon with water and performing distillation under reduced pressure, wherein the adsorbed and saturated activated carbon is 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane adsorbed and saturated activated carbon; calcining the activated carbon obtained by performing distillation under reduced pressure so as to obtain regenerated activated carbon. According to the regeneration method provided by the invention, the 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane adsorbed and saturated activated carbon is regenerated, and the obtained regenerated activated carbon can be repeatedly used; moreover, the regeneration method is easy to operate. An experimental result of the embodiment proves that the regenerated activated carbon obtained by the method is used for decoloring a crude product in a production processof the 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane, and the color number of the 2,5-dimethyl-2,5-bis(tert-butyl peroxide)hexane can reach 40 to 50 hazen.

Description

technical field [0001] The invention relates to the technical field of adsorbent regeneration, in particular to a regeneration method for adsorbed saturated activated carbon. Background technique [0002] 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane is an important chemical product widely used in synthetic rubber vulcanizing agents, polymerization initiators and unsaturated polyester crosslinking agent. At present, the synthesis method of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane mainly contains two steps: one is the peroxidation reaction, and 2,5-dimethyl-2, 5-hexanediol and hydrogen peroxide as raw materials, under the catalysis of concentrated sulfuric acid, undergo oxidation reaction to obtain 2,5-dimethyl-2,5-bis(hydrogen peroxide) hexane; the second is tert-butylation reaction, 2 , 5-dimethyl-2,5-bis(hydroperoxide)hexane and 85% tert-butanol are catalyzed by concentrated sulfuric acid to generate 2,5-dimethyl-2,5-bis (tert-butyl peroxy) hexane crude product, the ...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/20B01J20/3416B01J20/3475
Inventor 顾屹立陈丹唐明亮
Owner 常熟市滨江化工有限公司
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