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High performance spherical active carbon, and preparing method and purpose of high performance spherical active carbon

A technology of spherical activated carbon and activated carbon, which is applied in the field of adsorption materials, can solve the problems such as difficulty in realizing the adsorption performance of spherical activated carbon specific surface area and limitation of application range

Active Publication Date: 2018-08-10
SHENZHEN GLOBAL GREENLAND NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using the existing process to prepare spherical activated carbon, there are still many defects
For example, it is difficult to obtain satisfactory mechanical and strength properties while obtaining spherical activated carbon with a larger particle size in actual production, and the practical application range is greatly limited.
Moreover, it is difficult to realize the synergy between parameters such as particle size, strength, pore size, and specific surface area of ​​spherical activated carbon and its adsorption performance in the existing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0079] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0080] Instruments and Equipment

[0081] The specific surface area in the examples is tested by a Nitrogen Physisorption Apparatus model Belsorp mini II from MicrotracBEL Corp. The compressive strength is tested by the pressure tester of Shanghai Yihuan Instrument Technology Co., Ltd.

Embodiment 1

[0083] 1.1 Preparation of spherical polymer matrix

[0084] Add 18 liters of water into a 50-liter polymerization kettle, heat it to 45°C, add 10g of magnesium carbonate, 20g of gelatin and 0.15g of methylene blue under stirring, and add 3kg of methylstyrene and 1kg of dipentamyl olefin and 20g of benzoyl peroxide mixed into the oil phase, then add 1.0kg of paraffin, close the polymerization kettle, feed clean compressed air into the polymerization kettle, and keep the gas phase pressure in the kettle at 0.02MPa. Then, start the stirring, adjust the liquid beads in the kettle to an appropriate particle size, raise the temperature to 80°C, keep the temperature for 12 hours, then raise the temperature to 100°C, keep the temperature for 20 hours, filter, wash, dry and sieve to obtain the white spherical polymer 2.35 kg.

[0085] 1.2 Sulfonation and carbonization

[0086] Mix the spherical polymer obtained in step 1.1 with a mass ratio of 1:1 with concentrated sulfuric acid, the...

Embodiment 2

[0096] 2.1 Preparation of spherical polymer matrix

[0097] Add 20 liters of water into a 50 liter polymerization kettle, heat it to 40°C, add 10g of calcium carbonate, 20g of polyvinyl alcohol and 0.15g of petroleum calcium sulfonate under stirring, and add 3kg of styrene and 1kg of isoprene ethylene and 20g of azobisisobutyronitrile mixed into the oil phase, then add 1.6kg of glycerin, close the polymerization kettle, feed clean compressed air into the polymerization kettle, and keep the gas phase pressure in the kettle at 0.04MPa. Then, start stirring, adjust the liquid beads in the kettle to an appropriate particle size, raise the temperature to 80°C, keep it warm for 12 hours, then raise the temperature to 100°C, keep it warm for 20 hours, filter, wash, dry and sieve to obtain a white spherical polymer 2.67 kg.

[0098] 2.2 Sulfonation and carbonization

[0099] The spherical polymer obtained in step 2.1 with a mass ratio of 1:1.5 and SO 3 Mix, then put the mixture into ...

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Abstract

The invention provides high performance spherical active carbon and a preparation method and a purpose of the high performance spherical active carbon. The active carbon with a comparatively low specific surface area has physical or mechanical performances that cannot be predicted by technical staff in the field. And the spherical active carbon with a larger particle size which can not be preparedin the prior art is prepared in a good yield and at a lower cost by the preparation method.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, in particular to high-performance spherical activated carbon, its preparation method and application. Background technique [0002] Activated carbon has broad non-specific adsorption properties and is therefore the most widely used adsorbent. Activated carbon is generally obtained by carbonization, followed by activation, of carbon-containing starting compounds, preferably such compounds which give economically reasonable yields. This is because the weight loss due to the departure of volatile components during carbonization and subsequent burnout during activation is significant. [0003] The properties of the activated carbon produced (such as fine or coarse porosity, firmness or brittleness, etc.) depend on the different starting materials. Conventional starting materials are coconut shells, charcoal and wood, peat, stone coal, asphalt, etc. Due to their wide range of sources, t...

Claims

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Application Information

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IPC IPC(8): C01B32/336C01B32/318
CPCC01P2004/51C01P2006/11C01P2006/12C01P2004/60C01P2004/64C01B32/336C01B32/318C01B32/30A62D5/00B01D53/02B01J20/20A61K33/44C01P2004/32B01J20/28019A23L5/40B01D2257/2045B01D2257/302B01D2257/304B01D2257/404B01D2257/502B01J20/205C01P2006/16
Inventor 常明珠
Owner SHENZHEN GLOBAL GREENLAND NEW MATERIALS CO LTD
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