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Process for preparing activated carbon by vacuum chemical activation method

A technology for preparing activated carbon and chemical activation, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problem of high energy consumption, achieve the effects of reducing energy consumption, convenient collection, and clean process

Inactive Publication Date: 2017-11-21
江苏科力特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing activated carbon preparation is carried out under normal pressure, which consumes a lot of energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The invention provides a technical solution: a process for preparing activated carbon by vacuum chemical activation, comprising the following steps:

[0018] (1) Chinese fir chips are washed and dried with ZnCl 2 Solution immersion for 24h;

[0019] (2) drying and placing in the reactor;

[0020] (3) Connect the water condenser, cold trap, and vacuum pump in sequence, and adjust the vacuum pump to reach 0.1 atmospheric pressure;

[0021] (4) Start the reactor, set the initial temperature at 25 degrees Celsius, the heating time is 50-55 minutes, the final temperature is 500-600 degrees Celsius, and keep warm for 50 minutes after reaching the final temperature;

[0022] (5) Stop heating, and when the temperature drops to 200 degrees Celsius, turn off the vacuum pump to remove the solid product in the reactor.

[0023] The obtained activated carbon has a richer microporous structure and an effective adsorption rate of 80%.

Embodiment 2

[0025] A kind of technology that vacuum chemical activation method prepares gac, comprises the steps:

[0026] (1) Chinese fir chips are washed and dried with ZnCl 2 Solution immersion for 24h;

[0027] (2) drying and placing in the reactor;

[0028] (3) Connect the water condenser, cold trap, and vacuum pump in sequence, and adjust the vacuum pump to reach 0.15 atmospheres;

[0029] (4) Start the reactor, set the initial temperature at 25 degrees Celsius, the heating time is 50-55 minutes, and the final temperature is 550 degrees Celsius. After reaching the final temperature, keep it warm for 50 minutes;

[0030] (5) Stop heating, and when the temperature drops to 200 degrees Celsius, turn off the vacuum pump to remove the solid product in the reactor.

[0031] The obtained activated carbon has a richer microporous structure and an effective adsorption rate of 95%.

Embodiment 3

[0033] A kind of technology that vacuum chemical activation method prepares gac, comprises the steps:

[0034] (1) Chinese fir chips are washed and dried with ZnCl 2 Solution immersion for 24h;

[0035] (2) drying and placing in the reactor;

[0036] (3) Connect the water condenser, cold trap, and vacuum pump in sequence, and adjust the vacuum pump to reach 0.2 atmospheric pressure;

[0037] (4) Start the reactor, set the initial temperature at 25 degrees Celsius, the heating time is 50-55 minutes, and the final temperature is 600 degrees Celsius. After reaching the final temperature, keep it warm for 50 minutes;

[0038] (5) Stop heating, and when the temperature drops to 200 degrees Celsius, turn off the vacuum pump to remove the solid product in the reactor.

[0039] The obtained activated carbon has a richer microporous structure and an effective adsorption rate of 85%.

[0040] The present invention uses zinc chloride as an activator to crack and prepare activated car...

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PUM

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Abstract

The invention discloses a process for preparing activated carbon by a vacuum chemical activation method; the process comprises the steps of (1) washing a raw material, drying, and soaking in ZnCl2 solution for 24 h; (2) drying, and adding in a reactor; (3) connecting a water condenser, a cold trap and a vacuum pump in sequential manner, adjusting the vacuum pump to 0.1-0.2 atmospheric pressure; (4) starting the reactor, setting initial temperature to 25 DEG C, heating for 50-55 min, and ending at 500-600 DEG C; (5) stopping heating, allowing the temperature to drop to 200 DEG C, shutting down the vacuum pump, and collecting a solid product in the reactor. The process of the invention has the advantages that zinc chloride is used as an activator to prepare activated carbon in vacuum by cracking, the procedure is clean, the activation temperature is lowered as the vacuum condition is introduced, energy consumption is thereby reduced, and the vacuum condition also enables bio-oil to be more convenient to collect.

Description

technical field [0001] The invention relates to the technical field of adsorbent preparation, in particular to a process for preparing activated carbon by a vacuum chemical activation method. Background technique [0002] Activated carbon, as an important microporous adsorbent, has rich stewardess and a large specific surface area. The surface contains a variety of oxygen-containing functional groups. It has good catalytic activity and chemical stability, and is easy to use repeatedly. It is used in industry, agriculture, national defense, It has been widely used in science and technology and life, and has become an indispensable and important adsorbent for the national economy. [0003] The existing activated carbon preparation is carried out under normal pressure, which consumes a lot of energy. Contents of the invention [0004] The object of the present invention is to provide a kind of technology that vacuum chemical activation prepares active carbon, to solve the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348
Inventor 陈天烨
Owner 江苏科力特环保科技有限公司