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Method for preparing activated charcoal by using discarded jatropha curcas husk

A technology for preparing activated carbon and Jatropha curcas, which is applied in the field of waste Jatropha curcas husk utilization, can solve the problems of tail gas environmental pollution, poor economic benefits, and low added value, and achieve easy collection, reduced production costs, and a cheap and high-quality market The effect of competitive advantage

Inactive Publication Date: 2008-01-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The utilization of these discarded fruit shells is currently only directly burned as a common fuel, which not only has low added value and poor economic benefits, but also causes the tail gas released after combustion to be harmful to the environment due to the high sulfur content in the fruit shells. cause pollution, so it has become an important research topic to seek new ways to utilize the discarded jatropha husks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Sieve the discarded Jatropha curcas husk with a 3-20 mesh sieve to remove sand, soil and other impurities, and then pulverize it into powder with a particle size of 80 meshes; In the box furnace, pass high-purity N 2 As a protective gas, heat up to 500°C at a rate of 5°C / min for carbonization for 1.8 hours; then pass in water vapor activation gas at a rate of 150ml / min and continue to heat up to 800°C for 2 hours of constant temperature activation. The yield of activated carbon is 27.12%, and the iodine adsorption value is 865.31 mg / g.

Embodiment 2

[0025] The discarded jatropha husk is screened with a 3-20 mesh sieve to remove sand, soil and other impurities, and then it is pulverized into powder with a particle size of 120 mesh; In the box furnace, pass high-purity N 2 As a protective gas, carbonize at 600°C at a rate of 2°C / min for 2.5 hours; then feed CO at a rate of 200ml / min 2 The activation gas continues to heat up to 900°C, and activate at constant temperature for 2.5 hours. The yield of activated carbon is 24.01%, and the iodine adsorption value is 1120.36mg / g.

Embodiment 3

[0027] Sieve the discarded Jatropha curcas husk with a 3-20 mesh sieve to remove sand, soil and other impurities, and then pulverize it into powder with a particle size of 50 mesh; In the box furnace, pass high-purity N 2 As a protective gas, carbonize at 400°C for 0.5 hours at a rate of 15°C / min; then introduce CO at a rate of 80ml / min 2 The activation gas continues to heat up to 700°C and activate at constant temperature for 1 hour. The yield of activated carbon is 29.9%, and the iodine adsorption value is 662.66mg / g.

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Abstract

The invention discloses a method for preparing active carbon with waste barbadosut shells, and is characterized in that: the waste barbadosut shells are firstly sieved and crumbled, then carbonization and activation are carried out by a physical method or a chemical method so as to obtain the active carbon. The invention not only has abundant raw material sources, so nonrenewable resources such as coal, tar and valuable wood materials that are used commonly at present can be saved, but also has low product cost, high added value, good performance and obvious market competition advantages, besides, the environment pollution problems caused by stack or burning of the waste barbadosut shells are solved, therefore, a new way of taking use of the resources fully is found, meanwhile, an important link is filled for the production mode of circular economy characterized in low investment, high efficiency and zero pollution of the waste barbadosut shells.

Description

technical field [0001] The invention belongs to the technical field of utilization of waste jatropha husks, and in particular relates to a method for preparing activated carbon by using waste jatropha husks. Background technique [0002] The energy issue is an important link restricting the development of the national economy. The lack of traditional fossil energy has prompted many countries to speed up the pace of finding renewable energy and include it in the strategic goals of national economic development. Bioenergy is expected to be an effective way to solve the future energy crisis, and is receiving more and more attention. Jatropha curcasl., as a plant for producing new biodiesel feedstock, has been widely planted in many areas of our country. It is estimated that the planting area of ​​Jatropha curcas in my country is expected to reach more than 300,000 hectares in the next few years, and the total output can reach 1.95×10 13 kg. However, while the jatropha fruit...

Claims

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Application Information

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IPC IPC(8): C01B31/08
Inventor 陈放华坚张志林尹华强吴莉丽赵瑞方苟圆
Owner SICHUAN UNIV
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