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Method for preparing meso-macroporous activated carbon from long flame coal

A long-flame coal and activated carbon technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as odor pollution in production plants, and achieve the effect of improving odor pollution, good appearance and less odor.

Inactive Publication Date: 2019-01-11
宁夏宝塔石化煤化工研究院有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a method for preparing medium and large-pore activated carbon from long-flame coal. A difficult problem of carbonization molding, and improved the problem of odor pollution in the production plant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] The raw coal is crushed to 200 mesh, and the layered strips are mixed according to the ratio of 72% raw coal, 20% binder, and 8% water. When the carbonization temperature of the carbonization furnace is 250°C, after 3 hours, it enters the secondary carbonization section for carbonization. The temperature of the carbonization furnace is 500°C, carbonization time 1.5h, the indicators of the carbonized material are as follows:

[0027] Strength: 93.7%; iodine value: 436mg / g; methylene blue: 36.1mg / g; carbon tetrachloride adsorption rate: 13.9%.

[0028] Then activate the carbonization material, the activation furnace medium is water vapor, the amount of water vapor is 4 times that of the activation material, the activation temperature is 900 °C, and the time is 2 hours. After activation, the activated carbon product is obtained. The specific indicators are as follows:

[0029] Iodine value: 796mg / g; methylene blue value: 221mg / g; strength: 95.7%; carbon tetrachloride adsor...

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Abstract

The invention discloses a method for preparing meso-macroporous activated carbon from long flame coal. The selected coal type is single long flame coal, and a multi-component composite adhesive is adopted. According to the total weight, the added amount of raw coal is 60%-80%, the added amount of the adhesive is 10%-25%, and the added amount of water is 3%-10%. The meso-macroporous activated carbon of the long flame coal is prepared by powder bonding, strip compression and granulation, carbonization and secondary carbonization, and activation of the raw materials and the like. A coal blendingtechnology cannot be needed, activated carbon with developed medium and large pores is prepared by the single long flame coal, the problem of carbonization and shaping of single long flame coal is solved, the multi-component composite adhesive is adopted, and the production environment is greatly improved.

Description

technical field [0001] The invention belongs to the field of activated carbon preparation, and in particular relates to a method for preparing medium and large-pore activated carbon from long-flame coal. Background technique [0002] As a widely used environmentally friendly adsorption material, activated carbon plays a pivotal role in industrial production and daily life. As the world's largest coal-based activated carbon production base, Ningxia mainly uses high-quality Taixi coal as raw material for activated carbon production. Long-flame coal is a low-metamorphism coal with high moisture, volatile matter and tar content. When producing columnar coal-based activated carbon, the safety of pulverization is poor, and the carbonization material is easily damaged in the carbonization section. At present, long-flame coal is mainly used for the production of coal-based activated carbon to adjust the pore size distribution of activated carbon, and no single long-flame coal is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/336
CPCC01B32/318C01B32/336
Inventor 马飞龙查春梅刘丹石双刘晓燕杨惠琳李拥军胡奇林
Owner 宁夏宝塔石化煤化工研究院有限公司
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