Active carbon for organic solvent recovery and preparation method thereof

An organic solvent and activated carbon technology, applied in the field of activated carbon for organic solvent recovery and its preparation, can solve problems such as environmental and human health hazards

Inactive Publication Date: 2022-04-22
JIANGSU ZHUHAI ACTIVATED CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic compounds volatilized during the use of solvents will cause great harm to the environment and human health

Method used

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  • Active carbon for organic solvent recovery and preparation method thereof
  • Active carbon for organic solvent recovery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] An activated carbon for organic solvent recovery, mainly comprising: 12 parts of modified carbon powder, 3 parts of benzamide folded body, 8 parts of 2-monochloromethyl terephthalic acid and 6 parts of 1,12- Dodecanediamine.

[0031] A preparation method of activated carbon for organic solvent recovery, the preparation method of said activated carbon for organic solvent recovery mainly comprises the following preparation steps:

[0032] (1) Carbonized grinding: Soak the sycamore leaves in 5% sodium hydroxide solution for 3 minutes, wash them with pure water for 3 times, dry them at 60°C for 6 hours, and preheat them at 100°C for 40 minutes in a nitrogen atmosphere , and then at 5°C / min, heat up to 360°C and keep it warm for 4 hours, then grind and pass through a 20-mesh sieve to obtain carbon powder, and mix the carbon powder with concentrated sulfuric acid with a mass fraction of 98% in a mass ratio of 1:10 Uniformly, add potassium permanganate 1 times the mass of car...

Embodiment 2

[0038] An activated carbon for organic solvent recovery, mainly including 11 parts of modified carbon powder, 4 parts of benzamide folded body, 9 parts of 2-monochloromethyl terephthalic acid and 7 parts of 1,12-deca Dioxanediamine.

[0039] A preparation method of activated carbon for organic solvent recovery, the preparation method of said activated carbon for organic solvent recovery mainly comprises the following preparation steps:

[0040] (1) Carbonized grinding: Soak the sycamore leaves in 5% sodium hydroxide solution for 4 minutes, wash them with pure water for 4 times, dry them at 65°C for 5 hours, and preheat them at 110°C for 35 minutes in a nitrogen atmosphere , then at 5°C / min, raise the temperature to 380°C and keep it warm for 3 hours, then grind and pass through a 20-mesh sieve to obtain carbon powder, and then mix the carbon powder and concentrated sulfuric acid with a mass fraction of 98% in a mass ratio of 1:10 Mix evenly, add potassium permanganate 1 times...

Embodiment 3

[0046] An activated carbon for organic solvent recovery, mainly comprising: 10 parts of modified carbon powder, 5 parts of benzamide folded body, 10 parts of 2-monochloromethyl terephthalic acid and 8 parts of 1,12- Dodecanediamine.

[0047] A preparation method of activated carbon for organic solvent recovery, the preparation method of said activated carbon for organic solvent recovery mainly comprises the following preparation steps:

[0048] (1) Carbonized grinding: Soak the sycamore leaves in a 5% sodium hydroxide solution for 5 minutes, wash them with pure water for 5 times, dry them at 70°C for 4 hours, and preheat them at 120°C for 30 minutes in a nitrogen atmosphere , then at 5°C / min, raise the temperature to 400°C and keep it warm for 3 hours, then grind and pass through a 20-mesh sieve to obtain carbon powder, and then mix the carbon powder and concentrated sulfuric acid with a mass fraction of 98% in a mass ratio of 1:10 Mix evenly, add potassium permanganate 1 tim...

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Abstract

The invention discloses activated carbon for organic solvent recovery and a preparation method thereof, and relates to the technical field of activated carbon. When the activated carbon for recycling the organic solvent is prepared, firstly, phoenix tree leaves are used as raw materials to be carbonized and ground into carbon powder, and the carbon powder is oxidized and then carboxylated to prepare modified carbon powder; the preparation method comprises the following steps: reacting modified carbon powder with a benzamide folded body formed by polymerizing 2-fluoro-4-hydroxyisophthalic acid and 2-fluoro-4-hydroxym-phenylenediamine to prepare a porous carbon film, granulating the porous carbon film, carrying out primary permeation and modification by using 2-chloromethyl terephthalic acid, carrying out surface protection treatment by using 1, 12-dodecane diamine, carrying out secondary permeation by using 2-chloromethyl terephthalic acid, carrying out secondary permeation by using 2-chloromethyl terephthalic acid, and carrying out secondary permeation by using 1, 12-dodecane diamine to prepare the porous carbon film. And performing secondary permeation by using the supercritical fluid to obtain the activated carbon for recovering the organic solvent. The prepared activated carbon for organic solvent recovery has good adsorption effect and adsorption selectivity.

Description

technical field [0001] The invention relates to the technical field of activated carbon materials, in particular to an activated carbon for organic solvent recovery and a preparation method thereof. Background technique [0002] With the development of industry, the application of organic solvents is becoming more and more extensive. Solvents are mainly used in paint coatings, printing, medicine, paper making, textile and chemical industries. The organic compounds volatilized during the use of solvents will cause great harm to the environment and human health. The solvent can be recovered, which is beneficial to reduce production costs, generate economic benefits, and reduce environmental pollution at the same time, which is of great significance. A solvent is an inorganic or organic liquid substance capable of dissolving other gaseous, liquid or solid substances. In industrial production, more organic solvents are used. Organic solvents are all volatile organic compound...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01D53/02B01J20/20B01J20/30
CPCB01J20/20B01J20/262B01J20/28016B01D53/02B01D2257/708
Inventor 李正元
Owner JIANGSU ZHUHAI ACTIVATED CARBON CO LTD
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