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Preparation method of Ageratina-adenophora-base high-specific-area activated carbon

A high specific surface area, Eupatorium adenophorum technology, applied in the field of environmental protection, can solve the problems of not achieving good results, achieve the effect of rational utilization, saving time and improving activation effect

Inactive Publication Date: 2015-06-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, many scholars have carried out research on Eupatorium adenophorum, and various control measures are also constantly expanding, but they have not achieved good results. In order to control the spread of Eupatorium adenophorum, in addition to active control measures, the more important It is to develop and utilize it, turning harm into treasure

Method used

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  • Preparation method of Ageratina-adenophora-base high-specific-area activated carbon
  • Preparation method of Ageratina-adenophora-base high-specific-area activated carbon
  • Preparation method of Ageratina-adenophora-base high-specific-area activated carbon

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Effect test

Embodiment 1

[0029] First, the Eupatorium adenophorum was dried at 80℃ for 25min to remove water, then put it into the carbonization furnace, raised to 400℃ at a heating rate of 5℃ / min, kept and carbonized for 30 minutes, after cooling with the furnace, it was taken out to obtain the carbonized material; The material is crushed to 600um as the activation raw material. The KOH and the carbonized material are mixed in a solid phase with a mass ratio of 2.0:1 and are uniformly loaded into a ceramic crucible and put into a microwave high temperature reactor; 2 min of nitrogen is passed into the furnace to empty the furnace The inner air is heated for 18min under the condition of microwave power of 5kW; when heated to 8min, CO is quickly blown into the 5min tube connected to the bottom of the ceramic crucible 2 , And turn on the 100W ultrasonic generator at the same time, turn off the microwave device and ultrasonic generator after heating, transfer the material to a beaker with tap water for wash...

Embodiment 2

[0033] First, the Eupatorium adenophorum was dried at 80°C for 30 minutes to remove water, and then put into a carbonization furnace, heated to 450°C at a temperature increase rate of 10°C / min, kept carbonized for 35 minutes, and taken out after the furnace was cooled to obtain a carbonized material; Crush to 800um as the activating raw material, mix KOH and carbonized material with a mass ratio of 2.5:1 into the ceramic crucible and put it into the microwave high-temperature reactor; pass nitrogen gas for 2 minutes to exhaust the air in the furnace , Heating for 18 minutes under the condition of microwave power of 8kW; when the microwave is heated to 8 minutes, the pipe connected to the bottom of the reaction vessel is blown in for 5 minutes and CO is blown in 2 , Turn on the 200W ultrasonic generator at the same time, turn off the microwave device and ultrasonic generator after heating, transfer the materials to a beaker with tap water for washing, then use hydrochloric acid wi...

Embodiment 3

[0036] First, Eupatorium adenophorum was dried at 80℃ for 45min to remove water, then put it into a carbonization furnace, raised to 500℃ at a heating rate of 15℃ / min, kept and carbonized for 40 minutes, and was taken out after the furnace was cooled to obtain a carbonized material; The material is crushed to 1000um as the activation raw material. The KOH and the carbonized material are mixed in a solid phase with a mass ratio of 1:3 and uniformly loaded into the ceramic crucible and put into the microwave high temperature reactor; 2min of nitrogen is passed into the furnace to empty the furnace Air is heated for 14 minutes under the condition of microwave power of 10kW; when the microwave is heated to 9 minutes, the pipe connected to the bottom of the reaction vessel is blown into CO2 for 5 minutes, and the 300W ultrasonic generator is turned on. After heating, the microwave device and ultrasonic generator are turned off. The materials are transferred to a beaker filled with ta...

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Abstract

The invention relates to a preparation method of Ageratina-adenophora-base high-specific-area activated carbon, belonging to the field of environmental protection. The method comprises the following steps: uniformly mixing KOH and an Ageratina adenophora carbonization material in a solid-phase state, filling into a ceramic crucible, and putting into a microwave high-temperature reactor; introducing nitrogen to evacuate air in the furnace, heating under microwaves to the last fewer minutes, quickly blowing CO2 into a guide tube communicated with the bottom of the ceramic crucible, and meanwhile, starting an ultrasonic generator; after finishing heating, washing the activated material with water, and recovering the residual KOH activator; and sequentially carrying out acid washing, water washing and drying to obtain the high-specific-area activated carbon. By using the Ageratina adenophora as the raw material, the method uses the CO2 bottom blowing mode to enhance the activation effect of the carbonization material, thereby lowering the production cost of the activated carbon, relieving the environmental pollution, changing harmful substances and waste into valuable substances and implementing comprehensive utilization of natural resources. The high-specific-area activated carbon can be effectively used in the fields of adsorptive collection of gasoline and other organic substances in automobile exhaust emissions and fuel system volatile substances, solvent recovery and the like.

Description

Technical field [0001] The invention relates to a preparation method of Eupatorium adenophorum high specific surface area activated carbon, which belongs to the field of environmental protection. Background technique [0002] Activated carbon as a porous material with excellent performance is widely used in many industrial fields, such as separation / purification of gas / liquid phase, wastewater treatment, catalyst carrier, super capacitor, energy storage, etc. With the development of human society, the scope of application of activated carbon is becoming wider and wider, and the demand is also increasing. In addition, the quality of activated carbon itself is also becoming higher and higher. [0003] Eupatorium adenophorum, native to Mexico, is a perennial herb, also known as liberation grass, airplane grass, black head grass, big poisonous weed, flying flower grass and so on. Due to its rapid fecundity and strong adaptability, it has been widely distributed in tropical areas of mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 夏洪应程松张利波彭金辉王仕兴刘秉国许磊张声洲周朝金
Owner KUNMING UNIV OF SCI & TECH
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