Production process of high-strength wear-resisting shaped activated carbon

A technology for forming activated carbon and production process, which is applied in inorganic chemistry, non-metallic elements, carbon compounds, etc., to prevent excessive ablation, shorten the process, and improve performance.

Inactive Publication Date: 2013-05-29
BEIJING ZHONGSHIHONG INSTALLATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current activated carbon preparation process, due to the continuous development of technology, the requirements for the strength and wear performance of activated carbon are gradually increasing. The activated carbon prepared by the existing activated carbon preparation process can no longer meet the requirements of strength and wear performance. Therefore, a An activated carbon with high strength and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, the carbon powder: asphalt and chlorinated polyethylene are mixed to form a binder: a nucleating agent composed of silica ultrafine powder is added to a high-speed mixer at a mass ratio of 100:12:5 for uniform mixing, and the nucleating agent The addition of carbon particles prevents the carbon particles from shrinking and deforming during the sintering process, which is beneficial to the shape stability of the carbon particles; : 20°C, back pressure: 2Mpa, and high-speed cold air is passed through the die of the extruder to cool the pellets to prevent the pellets from sticking; then the prepared pellets are input into the carbonization activation furnace for carbonization Activate, then heat up to 550°C at a rate of 10°C / min, then mix carbon dioxide and water vapor to make a composite activator into the carbonization activation furnace at a rate of 0.1 kg of composite activator / kg of carbon per hour, and then continue to heat up After reaching 690°C, keep the co...

Embodiment 2

[0025] Firstly, the carbon powder: the binder composed of chlorinated polyethylene: the nucleating agent composed of superfine silica powder and titanium dioxide is added to the high-speed mixer according to the mass ratio of 100:20:6 for uniform mixing. It is added to prevent the carbon particles from shrinking and deforming during the sintering process, which is beneficial to the shape stability of the carbon particles; then the uniformly mixed mixture is input into the extruder for extrusion granulation, and the parameters of the extruder are die hole diameter: 3mm, internal temperature: 120°C, back pressure: 8Mpa, and high-speed cold air is passed through the die of the extruder to cool the pellets to prevent the pellets from sticking; then the prepared pellets are input into the carbonization activation furnace for carbonization activation , then heat up to 510°C at a rate of 9°C / min, then mix carbon dioxide and water vapor into the carbonization activation furnace at a ra...

Embodiment 3

[0027] Firstly, carbon powder: asphalt and cellulose are mixed to form a binder: a nucleating agent composed of titanium dioxide is added to a high-speed mixer at a mass ratio of 100:10:2 for uniform mixing, and the addition of the nucleating agent prevents the sintering process The carbon particles shrink and deform, which is beneficial to the shape stability of the carbon particles; then the uniformly mixed mixture is input into the extruder for extrusion and granulation. : 12Mpa, and when the die head of the extruder is cutting and granulating, high-speed cold air is introduced to cool the pellets to prevent the pellets from sticking; then the prepared pellets are input into the carbonization activation furnace for carbonization activation, and then heated at 7°C After heating up to 540°C at a rate of / min, the composite activator made by mixing carbon dioxide and water vapor is input into the carbonization activation furnace at a ratio of 2 kg of composite activator / kg of c...

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Abstract

The invention discloses a production process of high-strength wear-resisting shaped activated carbon. The production process comprises the following steps of: uniformly mixing carbon powder, a bonding agent and a nucleating agent and feeding into an extruder to be extruded and palletized; subsequently feeding the prepared grains into a carbonizing and activating furnace to be carbonized and activated; raising the temperature of the furnace to be at 500-550 DEG C and subsequently adding a composite activating agent; further continuously raising the temperature to be at 650-750 DEG C and keeping the temperature constantly; further raising the temperature to be at 950-1,000 DEG C and keeping the temperature constantly; after the carbonization and activation is accomplished, cooling the hearth to be at about 500 DEG C and stopping introducing the composite activating agent; and introducing nitrogen, cooling in air to be less than 100 DEG C and discharging so as to obtain a finished product. The production process of the activated carbon, disclosed by the invention, has the characteristics that the process is short, the energy consumption is low, and the prepared product is large in specific surface area, high in strength and less in ash content; and the prepared granular carbon of expected shapes, such as a sphere shape or a cylinder shape, can be applied to special fields of liquid gas storage devices, toxic gas protection and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of activated carbon, in particular to a production process of high-strength, wear-resistant shaped activated carbon. Background technique [0002] Activated carbon has a developed pore structure and a huge specific surface area (500-3000㎡ / g), good adsorption performance, strong adsorption capacity for gases, organic or inorganic substances in solution, and colloidal particles, etc., and has sufficient chemical properties Stability, mechanical strength, acid resistance, alkali resistance, heat resistance, insoluble in water and organic solvents, easy to regenerate after use and other good properties, in the food industry, sugar, medicine, chemical industry, environmental protection, national defense, agriculture, fuel gas storage , gas separation, catalytic reaction and many other fields have a wide range of uses. The raw materials for preparing activated carbon include wood, coke, petroleum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 刘明秋张吉太邹开良
Owner BEIJING ZHONGSHIHONG INSTALLATION ENG
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