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Carbon material with high surface activity and preparation method thereof

A technology of activated carbon and high surface, applied in the field of high surface activated carbon materials and its preparation, can solve problems such as poor product quality control, uneven activation reaction, poor product quality, etc., to reduce KOH consumption and energy consumption, and reduce activation Time, the effect of reducing the ash content

Inactive Publication Date: 2010-07-21
核工业西南勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process has disadvantages such as uneven activation reaction, poor product quality control and poor product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Crush and sieve petroleum coke into 80-200 mesh powder, carbonize at 550°C for 2 hours, take petroleum coke and H 3 PO 4 , after mixing completely in the mixer, in H 3 PO 4 After activating in the preactivation furnace at 450°C for 1 hour, the obtained material is washed to neutrality; after drying, the washed material is completely mixed with KOH in a mixer at a ratio of 1:1, and then enters the KOH preactivation furnace. Activation at 400°C for 1 hour; the material pre-activated by KOH enters the high-temperature activation furnace again, and is activated at 800°C for 2 hours under the protection of N2 atmosphere. After that, it is pulverized to 1200 mesh by ultrafine powder pulverizer to obtain powdery super activated carbon material. The apparent specific capacitance of double electrodes in organic system is 45F / g at room temperature, and the mass adsorption capacity of methane at room temperature and 3.5MPa is 17.1 wt%, the volume adsorption capacity is 92V / V. ...

Embodiment 2

[0025] Crush and sieve petroleum coke into 80-200 mesh powder, carbonize at 600°C for 1 hour, take petroleum coke and H at a ratio of 1:1 3 PO 4 , after mixing completely in the mixer, in H 3 PO 4 After activation in the preactivation furnace at 350°C for 1.5 hours, the obtained material was washed to neutrality. After the washed material is dried and mixed with KOH in the ratio of 1:1.5 in the mixer, it enters the KOH pre-activation furnace and is activated at 380°C for 1.5 hours; the material pre-activated by KOH enters the high-temperature activation furnace again. in N 2 Under the protection of the atmosphere, activate at 750°C for 3 hours. After the activation, the material is cooled, washed with water and pickled until neutral, fully dried, and pulverized to 1500 mesh by a superfine powder pulverizer to obtain a powdery super activated carbon material. The apparent specific capacitance of the organic system double electrode is 41F / g, and the mass adsorption capacity ...

Embodiment 3

[0027] After the pitch coke is preliminarily crushed to 10-30 mesh, after carbonization at 650°C for 3 hours, crushed and sieved to 80-200 mesh powder, the carbonized pitch coke and H 3 PO 4 , after mixing completely in the mixer, in H 3 PO 4 After activation in the preactivation furnace at 400°C for 1.5 hours, the obtained material was washed to neutrality. After the washed material is dried and mixed with KOH in the ratio of 1:2 in the mixer, it enters the KOH pre-activation furnace and is activated at 400°C for 2 hours; the material pre-activated by KOH enters the high-temperature activation furnace again. in N 2 Under the protection of the atmosphere, activate at 800°C for 1.5 hours. After the activation, the material is cooled, washed with water and pickled to neutral, fully dried, and pulverized to 1200 mesh by a superfine powder pulverizer to obtain a powdery super activated carbon material. The apparent specific capacitance of the organic system double electrode is...

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Abstract

The invention relates to an activated carbon materialand a preparation method thereof, in particular to a carbon material with high surface activity and a preparation method thereof. The carbon material with high surface activity is characterized by comprising the raw materials of petroleum coke, tar coke, lignite and husk. The preparation method of the carbon material with high surface activity is characterized by comprising the following steps: a) crushing the petroleum coke, tar coke, lignite and husk, sieving into 80-200-mesh powder, and carbonizing for 0.5-2.5h in a high temperature activating oven under the temperature of 500-620 DEG C; and b) and evenly mixing the carbonized materials with H2PO4 or ZnCl2 or a mixture of the above two in terms of the mass ratio of 1:1 in a mixer according to the mass ratio of 1:0.5-1:3, and reacting for 0.5-2h in a pre-activating oven under the temperature of 300-600 DEG C. Activation time of a product is lowered and the production efficiency is improved by using the carbon material with high surface activity and the preparation method thereof.

Description

technical field [0001] The invention relates to an activated carbon material and a preparation method thereof, in particular to a high-surface activated carbon material and a preparation method thereof. Background technique [0002] High surface activated carbon has become a hot spot in the research and development of new carbon materials. It has a wide range of uses, mainly including supercapacitor electrode materials, adsorption storage of natural gas, adsorption storage of hydrogen, pressure swing adsorption, air purification, and microwave absorption. At present, huge economic and social benefits have been achieved in the fields of supercapacitor electrode materials, adsorption storage of natural gas, pressure swing adsorption separation of air and hydrogen, etc. [0003] At present, a preparation method of an electric double layer capacitor is introduced in the patent No. CN200310113251.2. The electrode material is prepared by using a compound activator and activated at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 边海军江涛刘敬尧赵月兴
Owner 核工业西南勘察设计研究院有限公司
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