Porous carbon material produced from gasified coal slag, production method and application of porous carbon material produced from gasified coal slag

A technology of porous carbon material and slag, which is applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve the problems of complex production process, expensive driving raw materials, high cost, and achieve simple preparation method, excellent electrochemical performance, The effect of less impurities

Inactive Publication Date: 2020-01-10
陕西利人之星环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the disadvantages of expensive raw materials, complex production process, low yield and high cost of porous carbon production precursors, and provides a porous carbon material prepared by gasification ash, a preparation method and its application

Method used

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  • Porous carbon material produced from gasified coal slag, production method and application of porous carbon material produced from gasified coal slag
  • Porous carbon material produced from gasified coal slag, production method and application of porous carbon material produced from gasified coal slag
  • Porous carbon material produced from gasified coal slag, production method and application of porous carbon material produced from gasified coal slag

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Mix the gasification ash and water evenly according to the ratio of (0.5-10): 1, and separate them under centrifugal force by a 5-meter-high spiral separator. A small amount of coarse ash and a large amount of fine ash can be obtained at the lower outlet. Ash (ash content 50-70%) and refined carbon material (ash content A ad less than 20%); the refined carbon material is dehydrated, and then dried at 120°C for 12-24 hours to obtain refined carbon with less than 10% moisture and volatile matter; A ad As an air dry base ash.

[0036] (2) Wash the refined carbon material with 1M dilute hydrochloric acid for 2-4h, filter, and then wash with deionized water until neutral, dry the product in an oven at 120°C for 12h, put it in an agate ball mill and grind it, pass through a 200-mesh sieve, Obtain the deashed fine carbon with uniform particles, the A of the deashed fine carbon ad less than 15%; then put it into a tube furnace protected by nitrogen atmosphere and start to...

Embodiment 2

[0047] Different from embodiment 1 is the refined carbon material A sorted out ad More than 20% and less than 30%;

[0048] When acid washes the ash, the components of the pickling solution are 750 mL of concentrated nitric acid and 250 mL of concentrated hydrochloric acid per 1000 mL of water;

[0049] The carbonization conditions of deliming and refined carbon are as follows: in a tube furnace, the heating rate of carbonization is 3 °C / min, and the carbonization is maintained for 0.5 h when the temperature is raised to 700 °C; the atmosphere is nitrogen.

Embodiment 3

[0051] Different from Example 1, the carbonization conditions of deliming and refined carbon are as follows: in a tube furnace, the carbonization heating rate is 1 °C / min, and the carbonization is maintained for 45 min when the temperature is raised to 700 °C; the atmosphere is nitrogen.

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Abstract

The invention relates to a porous carbon material produced from gasified coal slag, a production method and application of the porous carbon material produced from the gasified coal slag, and belongsto the field of high-added-value resource utilization of solid waste resources of the coal chemical industry. According to the method for producing the porous carbon material from the gasified coal slag, by means of the characteristics that a refined carbon material recovered from the gasified coal slag has well-developed pores and a large specific surface area, through acid pickling for de-ashingand carbonization, the porous carbon material with a specific surface area and pore volume larger than those of the refined carbon material is obtained. The porous carbon material is large in specific surface area, few in impurity and low in cost, and has high market competitiveness. According to application of the porous carbon material as an electrode material, electrochemical tests indicate that test results are superior to those of the electrochemical performance of commercial porous carbon used for capacitors.

Description

technical field [0001] The invention belongs to the field of high value-added resource utilization of coal chemical solid waste materials, in particular to a porous carbon material prepared by using gasification ash, a preparation method and an application thereof. Background technique [0002] Porous carbon has the advantages of stable electric double layer characteristics, high specific surface area and porosity, and compared with carbon nanotubes and graphene, it has the advantages of low cost, abundant raw materials, and suitable for large-scale production. Main electrode material. [0003] At present, porous carbon materials on the market include activated carbon, bamboo charcoal, carbon aerogel, porous carbon fiber, porous carbon spheres, etc. In order to control their pore structure and high specific surface area, most of the raw materials used in the preparation of porous carbon spheres are polymer polymerization. Compounds (such as glucose, sucrose, etc.) are used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01G11/24H01G11/32H01G11/44
CPCC01B32/05H01G11/24H01G11/32H01G11/44Y02E60/13
Inventor 李东泽邵水源薛元发李建伟渝勇王斌曹嘉欣刘永强薛欢欢
Owner 陕西利人之星环保科技有限公司
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