Method for converting tree leaves into activated carbon by utilizing plasma combined with activating agent

A plasma and activator technology, applied in the field of activated carbon, can solve the problems of low yield, poor adsorption, general performance, etc., and achieve the effect of reducing difficulty requirements

Inactive Publication Date: 2017-05-31
成都新火环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the present invention does not need to add an external heat source and an activator during the activation process, the comprehensive utilization rate of pyrolysis products is high, and the environmental pollution is small; the process for preparing activated carbon is simple, the energy utilization rate is high, heat recycling is realized, energy is saved, and the obtained The activated carbon has good adsorption performance, and its indicators meet the national standards. It can be widely used in gas phase adsorption and decolorization of chemical products; The performance of activated carbon produced by general separation and high-temperature carbonization methods is relatively average, and the yield is also low, and the adsorption is not good.

Method used

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  • Method for converting tree leaves into activated carbon by utilizing plasma combined with activating agent

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Experimental program
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Effect test

Embodiment 1

[0023] A method for converting leaves into activated carbon using plasma in combination with an activator, characterized in that it comprises the following steps

[0024] Pretreatment: the leaves are screened, dried and ground to obtain pellets with a size of 10-60 mesh and a moisture content of ≦15%;

[0025] Activator impregnation: The pellets are impregnated with potassium hydroxide (KOH), zinc chloride (ZnCl 2 ), anhydrous ethanol and deionized water in the activator, and the amount of the activator used and the amount of the pellets are proportioned according to 2.5-3.5:1, and the immersion time is ≧2 hours;

[0026] Dry carbonization treatment: place the granules impregnated with the activator in an inert gas environment, introduce a plasma flow for drying and carbonization, and raise the temperature to 350°C in an inert gas environment according to a heating curve of 4-6°C / min ±50°C and keep the temperature for 45-60 minutes to carbonize the pellets;

[0027] Cleaning...

Embodiment 2

[0033] A method for converting leaves into activated carbon using plasma in combination with an activator, characterized in that it comprises the following steps

[0034] Pretreatment: the leaves are screened, dried and ground to obtain pellets with a size of 10-60 mesh and a moisture content of ≦15%;

[0035] Activator impregnation: The pellets are impregnated with potassium hydroxide (KOH), zinc chloride (ZnCl 2 ), anhydrous ethanol and deionized water in the activator, and the amount of the activator used and the amount of the pellets are proportioned according to 2.5-3.5:1, and the immersion time is ≧2 hours;

[0036] Dry carbonization treatment: place the granules impregnated with the activator in an inert gas environment, introduce a plasma flow for drying and carbonization, and raise the temperature to 350°C in an inert gas environment according to a heating curve of 4-6°C / min ±50°C and keep the temperature for 45-60 minutes to carbonize the pellets;

[0037] Cleaning...

Embodiment 3

[0042] A method for converting leaves into activated carbon using plasma in combination with an activator, characterized in that it comprises the following steps

[0043] Pretreatment: the leaves are screened, dried and ground to obtain pellets with a size of 10-60 mesh and a moisture content of ≦15%;

[0044] Activator impregnation: The pellets are impregnated with potassium hydroxide (KOH), zinc chloride (ZnCl 2 ), anhydrous ethanol and deionized water in the activator, and the amount of the activator used and the amount of the pellets are proportioned according to 2.5-3.5:1, and the immersion time is ≧2 hours;

[0045] Dry carbonization treatment: place the granules impregnated with the activator in an inert gas environment, introduce a plasma flow for drying and carbonization, and raise the temperature to 350°C in an inert gas environment according to a heating curve of 4-6°C / min ±50°C and keep the temperature for 45-60 minutes to carbonize the pellets;

[0046] Cleaning...

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Abstract

The invention discloses a method for converting tree leaves into activated carbon by utilizing plasma combined with an activating agent, relating to the field of plant processing. The method comprises the following steps: pretreating; dipping with the activating agent; performing drying and carbonizing treatment; cleaning; performing surface activating treatment; utilizing the high temperature of the plasma as a heat source for carbonizing; and combining with an activating method with a chemical activating agent and performing high-temperature surface treatment again, thereby efficiently converting the tree leaves into high-performance activated carbon.

Description

technical field [0001] The invention relates to the field of plant processing, in particular to a method for converting leaves into activated carbon by using plasma combined with an activator. Background technique [0002] The fallen leaves of plants themselves have a high carbon content and are very suitable for use as activated carbon production materials. However, in the prior art, the processing of plant matter raw materials into activated carbon usually adopts the method of separation and high-temperature carbonization, such as the publication number CN101955181A , published on January 26, 2011, the Chinese invention patent document titled "Method for preparing activated carbon by rapid pyrolysis of larch wood" discloses a method for preparing charcoal by rapid pyrolysis of larch wood. The method of activated carbon, at first carries out rapid pyrolysis to larch wood, obtains pyrolysis charcoal and pyrolysis gas; Carries out condensation to above-mentioned pyrolysis gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348
CPCC01P2006/12C01P2006/14C01P2006/16
Inventor 冯再陈伟
Owner 成都新火环保科技有限公司
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