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Coaly activated carbon and preparation method and application thereof

A technology of coal-based activated carbon and active components, which is applied in the direction of hydrogen halide addition preparation, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of complex preparation process, no special carrier production technology for mercury-free catalyst, and high cost, and achieve The effect of simple process, rich porosity and low ash content

Inactive Publication Date: 2017-09-12
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon carrier preparation process in the above literature is relatively complicated, the cost is high, and it is basically still in the laboratory research stage. At present, there is no production technology for mercury-free catalyst-specific carriers.

Method used

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  • Coaly activated carbon and preparation method and application thereof
  • Coaly activated carbon and preparation method and application thereof
  • Coaly activated carbon and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]The coal is crushed to 20 mesh to 100 mesh granular coal, and 100 kg of the crushed granular coal and 5 kg of ammonium carbonate are weighed and mixed uniformly to form a reaction raw material. Place the reaction raw materials in the pyrolysis tube, feed nitrogen into the pyrolysis tube and heat the pyrolysis tube so that the temperature of the material in the pyrolysis tube reaches 400°C, and keep the temperature at 400°C for 1 hour. Continue to heat the pyrolysis tube to make the temperature of the material in the pyrolysis tube reach 800°C, then stop feeding nitrogen into the pyrolysis tube, and feed a flow rate of 0.7 kg / h into the pyrolysis tube per kilogram of reaction raw materials Continuously feed water vapor, keep the temperature at 800° C. for 3 hours, and then cool to room temperature under nitrogen atmosphere to obtain 25 kg of coal-based activated carbon.

Embodiment 2

[0031] The coal is crushed to 20 mesh to 100 mesh granular coal, and 100 kg of the crushed granular coal and 2 kg of potassium nitrate are weighed and mixed uniformly to form a reaction raw material. Place the reaction raw materials in the pyrolysis tube, feed nitrogen into the pyrolysis tube and heat the pyrolysis tube so that the temperature of the material in the pyrolysis tube reaches 400°C, and keep the temperature at 400°C for 1 hour. Continue to heat the pyrolysis tube to make the temperature of the material in the pyrolysis tube reach 800°C, then stop feeding nitrogen into the pyrolysis tube, and feed a flow rate of 0.7 kg / h into the pyrolysis tube per kilogram of reaction raw materials Continuously feed water vapor, keep the temperature at 800° C. for 3 hours, and then cool to room temperature under nitrogen atmosphere to obtain 22 kg of coal-based activated carbon.

Embodiment 3

[0033] The coal is crushed to 20 mesh to 100 mesh granular coal, and 100 kg of the crushed granular coal and 5 kg of potassium nitrate are weighed and mixed uniformly to form a reaction raw material. Place the reaction raw materials in the pyrolysis tube, feed nitrogen into the pyrolysis tube and heat the pyrolysis tube so that the temperature of the material in the pyrolysis tube reaches 400°C, and keep the temperature at 400°C for 1 hour. Continue to heat the pyrolysis tube to make the temperature of the material in the pyrolysis tube reach 800°C, then stop feeding nitrogen into the pyrolysis tube, and feed a flow rate of 0.7 kg / h into the pyrolysis tube per kilogram of reaction raw materials Continuously feed carbon dioxide, keep the temperature at 800° C. for 3 hours, and then cool to room temperature under nitrogen atmosphere to obtain 21 kg of coal-based activated carbon.

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Abstract

The invention provides coaly activated carbon. A preparation method of the coaly activated carbon comprises: mixing particulate coal of 20-100 mesh with an inorganic salt to obtain reacted material, adding the reacted material in a pyrolytic pipe, introducing an inert gas into the pyrolytic pipe, heating to 400-600 DEG C, holding the temperature for 1-4 h, continuing to heat to 800-1000 DEG C, stopping introducing the inert gas, replacing with activated gas, holding the temperature for 1-5 h, and cooling in an inert atmosphere to room temperature to obtain the finished product. The coaly activated carbon may act as a special carrier for calcium carbide process vinyl chloride catalysts, and has the advantages of rich porosity, high mesopore ratio, low ash content, high mechanical strength, and good batch performance stability.

Description

(1) Technical field [0001] The invention relates to a coal-based activated carbon and its preparation method and application. The coal-based activated carbon can be used as a carrier for the preparation of low-mercury catalysts and mercury-free catalysts. (2) Background technology [0002] As one of the five general-purpose plastics in the world, polyvinyl chloride (PVC) is widely used in various fields of the national economy such as building materials, home appliances, and daily necessities. In recent years, the demand for PVC resin in the world has been increasing. In particular, my country's apparent consumption of PVC in 2011 exceeded one-fifth of the world's total consumption, making it the world's second largest producer and consumer. In the current industrial application, the production process of vinyl chloride mainly includes calcium carbide acetylene method and ethylene equilibrium method. With the continuous development of the production process of vinyl chlorid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C01B32/318B01J21/18B01J32/00B01J27/138B01J27/13B01J27/122B01J27/10C07C17/08C07C21/06
CPCB01J21/18B01J27/10B01J27/122B01J27/13B01J27/138C01P2006/12C01P2006/14C01P2006/17C07C17/08C07C21/06
Inventor 李瑛蓝国钧李健王小龙唐浩东韩文锋刘化章
Owner ZHEJIANG UNIV OF TECH
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