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Method for preparing activated carbon from pepper branches

A technology for preparing activated carbon and activated carbon, which is applied in the field of agricultural engineering, can solve problems such as air pollution and troublesome branch disposal, and achieve the effects of large specific surface area, good environmental benefits, and high strength

Inactive Publication Date: 2020-05-29
CHONGQING BEYOND OCEAN CARBON MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the branches of Zanthoxylum bungeanum have short thorns, it is very troublesome to deal with a large number of branches pruned every year, and burning them on the spot will also cause serious air pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The collected Zanthoxylum bungeanum branches are pulverized and mixed with acid-zinc chloride solution. The mass concentration of acid in the hydrochloric acid-zinc chloride solution is 0.8%; the concentration of zinc chloride is 64%, and the liquid-solid ratio is 8:1,380 Hydrothermal carbonization under the condition of °C for 1 hour; add a heat conducting agent to the carbonized liquid-solid mixture and stir evenly. The heat conducting agent is a mixture of silicon carbide and titanium dioxide. The mass ratio of silicon carbide and titanium dioxide is 1:1. 2.3% of the mass of the solid product, filtered for liquid-solid separation, the liquid-solid ratio after separation was 7:1, and activated by microwave at 920°C for 1 hour to obtain activated carbon products. After testing, the specific surface area of ​​the prepared activated carbon was 945 square meters per gram.

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Abstract

The invention discloses a method for preparing activated carbon from pepper branches, and solves the problem of treating pepper branches generated in trimming. The method comprises the following steps: crushing collected pepper branches, mixing the crushed pepper branches with an acid-zinc chloride solution, carrying out hydrothermal carbonization under high-temperature and high-pressure conditions, adding a heat conducting agent into the carbonized liquid-solid mixture, uniformly stirring, filtering, carrying out liquid-solid separation, and carrying out microwave activation to obtain the activated carbon. According to the method, waste generated in pepper trimming is converted into resources, and the prepared activated carbon is large in specific surface area, good in adsorption performance, high in strength and particularly suitable for high-temperature adsorption of VOCs and has good environmental benefits and economic value.

Description

technical field [0001] The invention belongs to the technical field of agricultural engineering, and relates to the technical field of agricultural waste treatment and high-value utilization, in particular to a method for preparing activated carbon by using prickly ash branches. Background technique [0002] Zanthoxylum bungeanum is a small deciduous tree belonging to Rutaceae and Zanthoxylum genus. The skin of Zanthoxylum bungeanum is red in sauce after drying and has a strong aroma of numbness. Zanthoxylum bungeanum needs regular pruning during the growth process to maintain fruit production. Because the branches of Zanthoxylum bungeanum have short thorns, it is very troublesome to deal with a large number of branches pruned every year, and burning them on the spot will also cause serious air pollution. Contents of the invention [0003] The purpose of this invention is to provide a kind of method that utilizes Chinese prickly ash branch to prepare gac, in order to real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348
CPCC01B32/318C01B32/348
Inventor 刘必衍曾惜陈柏蓉
Owner CHONGQING BEYOND OCEAN CARBON MFR
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