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Thermal regeneration and reutilization method for waste active carbon

A technology of activated carbon and thermal regeneration, which is applied in the direction of chemical instruments and methods, separation methods, filter regeneration, etc., can solve the problem of high volume loss rate of activated carbon regeneration, and achieve the effect of reducing gas overflow

Inactive Publication Date: 2019-11-01
上海政宝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The activated carbon regeneration and reuse method in the prior art still has the defect of high volume loss rate of activated carbon regeneration

Method used

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  • Thermal regeneration and reutilization method for waste active carbon
  • Thermal regeneration and reutilization method for waste active carbon
  • Thermal regeneration and reutilization method for waste active carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A thermal regeneration and reuse method of spent activated carbon, the method comprises the following steps:

[0030] 1) Drying: Heat the used wet charcoal to 100°C, and heat it at a constant temperature within this temperature range for 3 hours;

[0031] 2) Carbonization: heat the dried activated carbon to 700°C within 4 hours and keep it for 6 hours;

[0032] 3) Activation: heat the carbonized activated carbon to 850°C, control the heating rate to 15°C / min, and keep it for 3 hours after the heating is completed;

[0033] 4) Cooling: The activated carbon after the activation treatment is rapidly cooled to 25°C.

Embodiment 2

[0035] A thermal regeneration and reuse method of spent activated carbon, the method comprises the following steps:

[0036] 1) Drying: Heat the used wet charcoal to 150°C, and heat it at a constant temperature within this temperature range for 2 hours;

[0037] 2) Carbonization: heat the dried activated carbon to 300°C within 6 hours and keep it for 6 hours;

[0038] 3) Activation: heat the carbonized activated carbon to 855°C, control the heating rate to 15°C / min, and keep it for 2 hours after the heating is completed;

[0039] 4) Cooling: The activated carbon after the activation treatment is rapidly cooled to 28°C.

Embodiment 3

[0041] A thermal regeneration and reuse method of spent activated carbon, the method comprises the following steps:

[0042] 1) Drying: Heat the used wet charcoal to 100°C, and heat it at a constant temperature within this temperature range for 2 hours;

[0043] 2) Carbonization: heat the dried activated carbon to 700°C within 6 hours and keep it for 6 hours;

[0044] 3) Activation: heat the carbonized activated carbon to 850°C, control the heating rate to 15°C / min, and keep it for 2 hours after the heating is completed;

[0045] 4) Cooling: The activated carbon after the activation treatment is rapidly cooled to 28°C.

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Abstract

The invention relates to the technical field of reutilization of active carbon, specifically to a thermal regeneration and reutilization method for waste active carbon. The method comprises the following steps: 1) drying: a step of heating used wet carbon to 100 to 150 DEG C, and carrying out heating for 2 to 3 hours at a constant temperature in a range of 100 to 150 DEG C; 2) carbonization: a step of heating dried active carbon to 300 to 700 DEG C in a certain period of time, and maintaining the temperature for 6 hours; 3) activation: a step of heating carbonized active carbon to 850 to 855 DEG C, controlling a certain heating rate, and after heating is completed, maintaining the temperature for 2 to 3 hours; and 4) cooling: a step of quenching activated active carbon to a certain temperature. The invention discloses the thermal regeneration and reutilization method for the waste active carbon. The method provided by the invention effectively compensates for the defect of high regeneration volume loss rate of the active carbon in a conventional active carbon regeneration technology.

Description

technical field [0001] The invention relates to the technical field of activated carbon reuse, in particular to a thermal regeneration and reuse method of waste activated carbon. Background technique [0002] The thermal regeneration method of waste activated carbon is currently the most widely used and industrially mature activated carbon regeneration method. First remove the volatile components on the activated carbon. In the high-temperature carbonization stage, a part of the organic matter adsorbed on the activated carbon is boiled, vaporized and desorbed, and small molecule hydrocarbons are generated and desorbed, and the remaining components remain in the pores of the activated carbon to become "fixed carbon". At this stage, the temperature will reach 800-900°C. In order to avoid the oxidation of activated carbon, it is usually carried out under vacuum or inert atmosphere. In the next activation stage, CO is introduced into the converter 2 , CO, H 2 Or water vapor ...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20C01B32/366
CPCB01J20/3483B01J20/3416B01J20/20C01B32/366
Inventor 刘三彬
Owner 上海政宝环保科技有限公司
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