Active carbon preparation method and device

A technology for preparing activated carbon and activated carbon, applied in the field of carbon materials, can solve the problems of high economic cost, non-renewability, unfavorable process sustainable development, etc., and achieve the effects of high environmental protection value, avoiding pollution, and huge economic benefits.

Inactive Publication Date: 2015-07-01
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, this method of preparing activated carbon has relatively high economic cost, and the raw material such as coal is non-renewable, which is not conducive to the sustainable development of the process

Method used

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preparation example Construction

[0078] The equipment for preparing activated carbon provided by the present invention includes a waste slag feeding device, and the waste slag feeding device is used to transport the waste slag described in the above technical solution to a material mixing device for mixing with the catalyst. In an embodiment of the present invention, in order to dry and pulverize the waste slag, the waste slag feeding device may include a waste slag storage device; a first drying device whose feeding port is connected to the discharge port of the waste slag storage device; A filter device in which the feed port is connected to the discharge port of the first drying device. In an embodiment of the present invention, the waste residue storage device is used to store furfural residue and / or xylose residue obtained from production; the outlet of the waste residue storage device is connected to the feed inlet of the first drying device, and The material transported from the waste residue storage d...

Embodiment 1

[0104] The raw material uses air-dried corncobs, and its water content is 15%. After the corncobs are dedusted by vibrating sieves, they are crushed into 1-1.5cm corncob particles by a hammer mill, and then transported by the elevator to the acid mixing truck for acid mixing. The acid concentration is 5%±2%. The solid-to-liquid ratio of the obtained suspension is 1:0.3, and it is sent into the hydrolysis kettle through a belt conveyor. The volume of the hydrolysis kettle is 10 cubic meters, and the double kettle is operated in series. After filling the hydrolysis kettle, the pressure is 0.50MPa±0.05 MPa water vapor, the hydrolysis temperature is 145°C, and the hydrolysis takes 4 hours. The furfural stock solution obtained by hydrolysis is introduced into the subsequent process, and the gross aldehyde is extracted, and the furfural is continuously refined to obtain commercial furfural. The furfural slag in the kettle is discharged into the slag yard for standby.

Embodiment 2

[0106] The raw material uses air-dried corncobs, and its water content is 10%. After the corncobs are dedusted by the vibrating screen, they are crushed into 1-1.5cm corncob particles by a hammer mill, and then transported by the elevator to the acid mixing truck for acid mixing. The acid concentration is 8% ± 2%, and the amount of acid used is kept The solid-to-liquid ratio of the obtained suspension is 1:0.5, and it is sent to the hydrolysis kettle through a belt conveyor. The volume of the hydrolysis kettle is 10 cubic meters, and the double kettle is operated in series. After filling the hydrolysis kettle, the pressure is 0.70MPa±0.05 MPa water vapor, the hydrolysis temperature is 180°C, and the hydrolysis takes 2 hours. The furfural stock solution obtained by hydrolysis is introduced into the subsequent process, and the gross aldehyde is extracted, and the furfural is continuously refined to obtain commercial furfural. The furfural slag in the kettle is discharged into t...

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Abstract

The invention provides an active carbon preparation method. The method comprises providing waste residue which is waste residue obtained by hemicellulose extraction from a biomass raw material, and carrying out charing activation on the waste residue in the presence of a catalyst so that active carbon is obtained. The active carbon preparation method utilizes a waste residue raw material such as furfural residue and / or corn cob residue obtained by hemicellulose extraction from a biomass raw material and utilizes a chemical method to prepare active carbon. Compared with the prior art, the active carbon preparation method utilizes a waste residue raw material obtained by hemicellulose extraction from biomass, realizes residue recovery and recycle, prevents environmental protection caused by residue and has a high environmental protection value. The active carbon preparation method can be used for active carbon preparation and has large economic benefits.

Description

technical field [0001] The invention relates to the technical field of carbon materials, in particular to a method and equipment for preparing activated carbon. Background technique [0002] Activated carbon, also known as activated carbon black, is black powder or granular amorphous carbon. The main components of activated carbon include oxygen, hydrogen and other elements in addition to carbon. In terms of structure, microcrystalline carbon is irregularly arranged, and there are pores between cross-links, which will produce carbon tissue defects during activation, so it is a porous carbon with low packing density and large specific surface area. Moreover, there are smaller pores in the carbon particles of activated carbon-capillaries. This kind of capillary has a strong adsorption capacity, and due to the large surface area of ​​the carbon particles, it can fully contact with the gas (impurity). When these gases (impurities) meet the capillary, they are adsorbed and pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
Inventor 唐一林江成真刘晓敏高绍丰栗昭争马军强张茜部先栋
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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