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Activated carbon and preparation method thereof

A technology of activated carbon and wood charcoal, applied in the field of activated carbon, can solve the problems of reduced adsorption capacity of activated carbon, excessive VOCs pollution, etc., and achieve the effects of improving processing performance, improving molding effect, and reducing cracks and burrs

Active Publication Date: 2020-12-25
北京中科恩吉科科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of excessive VOCs pollution and reduced adsorption capacity of activated carbon in the existing shaped activated carbon, the present invention provides an activated carbon with excellent performance, no pollution and strong adsorption capacity, and at the same time achieves an abrasion resistance greater than 98% and an iodine value greater than 900mg / g , the ash content is less than 10%

Method used

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  • Activated carbon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 200g of wood activated carbon powder, 5g of yellow dextrin, 5g of polyvinyl alcohol, 35g of high-temperature asphalt, 15g of sodium humate and 10.5g of C5 petroleum resin were pulverized by a pulverizer at a speed of 24000rpm / min, and then sieved with a 200-mesh vibrating sieve. The pass rate requirement is higher than 90%;

[0035] After crushing and screening, woody activated carbon powder larger than 200 meshes, yellow dextrin, polyvinyl alcohol, high-temperature asphalt, sodium humate and C5 petroleum resin powder are put into a kneader for pre-mixing. During the mixing process, the speed of the kneader is 60rpm / min, mixing time 15min;

[0036] Add 2.7g of lactic acid, 1.25g of 3-aminopropyltriethoxysilane and 105g of deionized water to the mixed powder, and then knead it into a billet through a kneader at room temperature. The kneader speed is 60rpm / min, and the kneading time is 2h ;

[0037] After the kneading is completed, the resulting billet is collected in ...

Embodiment 2

[0043] 200g of woody activated carbon powder, 5g of yellow dextrin, 5g of polyvinyl alcohol, 35g of SMP-II sulfonated phenolic resin, 15g of sodium humate and 10.5g of terpene resin were pulverized by a pulverizer at a speed of 24000rpm / min, and then 200-mesh vibrating sieve screening, the pass rate is required to be higher than 90%;

[0044] Put the crushed and screened woody activated carbon powder, yellow dextrin, polyvinyl alcohol, SMP-II sulfonated phenolic resin, sodium humate and terpene resin powder into the kneader for pre-mixing. The mixing process, Kneader speed 60rpm / min, kneading time 15min;

[0045] Add 2.7g of lactic acid, 1.25g of ethylene glycol dimethacrylate and 112g of deionized water to the mixed powder, and then knead it into a billet through a kneader at room temperature. The kneader speed is 60rpm / min, and the kneading time is 2h;

[0046] After the kneading is completed, the resulting blank is collected in a ziplock bag and stale for 12 hours;

[004...

Embodiment 3

[0052] 200g of woody activated carbon powder, 5g of yellow dextrin, 5g of polyvinyl alcohol, 25g of SMP-II sulfonated phenolic resin, 25g of high-temperature asphalt and 10.5g of C5 petroleum resin were pulverized by a pulverizer at a speed of 24000rpm / min, and then 200 mesh Screening by vibrating sieve, the pass rate is required to be higher than 90%;

[0053] Put the crushed and screened wood activated carbon powder, yellow dextrin, polyvinyl alcohol, SMP-II sulfonated phenolic resin, high-temperature asphalt and C5 petroleum resin powder into the kneader for pre-mixing, the mixing process, the kneader Rotation speed 60rpm / min, kneading time 15min;

[0054] Add 2.7g of lactic acid, 1.25g of ethylene glycol dimethacrylate and 110g of deionized water to the mixed powder, and then knead it into a billet through a kneader at room temperature. The kneader speed is 60rpm / min, and the kneading time is 2h;

[0055] After the kneading is completed, the resulting blank is collected i...

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Abstract

The invention relates to activated carbon. The activated carbon is prepared from the following raw materials in parts by mass: 70-80 parts of wood charcoal powder, 1-6 parts of a normal-temperature binder, 15-20 parts of a high-temperature binder, 3-5 parts of a tackifier, 0.5-1 part of an extrusion aid, 0.1-0.5 part of a coupling agent and water accounting for 35-45% of the total mass of the components. The invention also relates to a preparation method of the activated carbon. The preparation method comprises the following steps of: pulverizing, screening, proportioning, mixing, kneading, aging, carrying out extrusion molding, drying, carbonizing and activating at the same time. High-temperature asphalt, sodium humate and sulfonated phenolic resin are used for replacing dangerous chemical coal tar to serve as adhesives, VOCs gas emission in the preparation process is reduced, environmental pollution is reduced, the adhesion effect of the adhesives is improved through a tackifier anda coupling agent, the abrasion resistance and the adsorption capacity of the activated carbon are improved, the abrasion resistance of the activated carbon reaches 98%, the iodine value of the activated carbon can reach 900 mg / g, the ash content of theactivated carbon is smaller than 10%. The method can be used for some application scenes with high requirements for the abrasion resistance and theadsorption capacity of the activated carbon, such as desulfurization and denitrification catalysts and gold extraction.

Description

technical field [0001] The invention relates to an activated carbon and a preparation method thereof, belonging to the technical field of activated carbon. Background technique [0002] Activated carbon is a carbon material with developed pore structure, large specific surface area, and strong selective adsorption capacity. It has been widely used in toxic and harmful gas purification treatment, water treatment, pharmaceutical industry, food industry, electronics industry and other fields. At present, activated carbon is mainly in the form of powder and amorphous granules. This type of activated carbon has disadvantages such as low bulk density, difficulty in storage and transportation, easy to cause dust pollution, high loss rate during use, and difficulty in recycling. Its application and promotion are limited. The current common way to solve this problem is to mix activated carbon with binder and process it into columnar, honeycomb and other shaped activated carbon. [...

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 崔彦斌王瑞强杨运国
Owner 北京中科恩吉科科技发展有限公司
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