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A kind of active coke and its preparation method

A technology of active coke and active gas, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of long process route, high production cost, serious pollution, etc., and achieve good desulfurization effect, good stability, and active high effect

Active Publication Date: 2019-06-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] There is at least one of the disadvantages of long process route, high production cost, serious pollution, etc. in the method of the above-mentioned prior art, and needs to be improved

Method used

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  • A kind of active coke and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0053] The method for preparing active coke of the present invention comprises:

[0054] (1) The semi-coke is successively contacted with hydrochloric acid and hydrofluoric acid solutions to obtain deashed semi-coke;

[0055] (2) In the presence of peroxide, the delimed semi-coke is contacted with phosphotungstic heteropoly salt to obtain oxidized semi-coke;

[0056] (3) heating the oxidized semi-coke for activation to obtain active coke.

specific Embodiment approach 2

[0057] The method for preparing active coke of the present invention comprises:

[0058] (1) crushing the raw material semi-coke, and then drying the pulverized raw material semi-coke at 120-140° C. for 2-4 hours to obtain the semi-coke;

[0059] (2) contacting the semi-coke with hydrochloric acid and hydrofluoric acid solution in turn to obtain deashed semi-coke;

[0060] (3) In the presence of peroxide, contacting the delimed semi-coke with phosphotungstic heteropoly acid salt to obtain oxidized semi-coke;

[0061] (4) heating the oxidized semi-coke for activation to obtain active coke.

[0062] In the above-mentioned specific embodiment 1 and specific embodiment 2, the substances involved, their dosages and reaction conditions are the same as those described above in the present invention, and the present invention will not repeat them here.

[0063] In a second aspect, the present invention provides active coke prepared by the aforementioned method.

[0064] The present...

preparation example 1

[0067] Preparation Example 1: Preparation of delimed semi-coke

[0068] Crush 2000g of semi-coke into particles with an average particle size of 2-5mm, and dry at 130°C for 3h.

[0069] Then take 1000g of dried semi-coke and soak it in 1500mL of 2mol / L hydrochloric acid solution, keep the temperature at 75°C for 12h, then wash it with water until neutral, then soak it in 1500mL of 2mol / L hydrofluoric acid solution at 75°C for 12h , washed with water until neutral, and then dried at 110°C for 10 hours to obtain delimed semi-coke. Cool to room temperature and set aside.

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Abstract

The invention belongs to the field of active coke preparation, and discloses an active coke, and a preparation method thereof. According to the preparation method, dedusted semicoke is contacted witha heteropolyphosphatotungstate so as to obtain semicoke via oxidation; in the presence of a protective gas, the semicoke obtained via oxidation is heated for activation so as to obtain the active coke. The active coke is large in specific surface area, and high in activity, stability, and desulphurization effect.

Description

technical field [0001] The invention relates to the field of active coke preparation, in particular to a method for preparing active coke and the active coke prepared by the method. Background technique [0002] Energy and the environment are two serious problems that plague the sustainable development of the world today. [0003] my country is a big country with coal as the main energy source, which is rich in coal resources but short of oil and natural gas. The characteristics of our country's resources have determined that coal must be the main solution to China's energy problems. However, while developing and utilizing coal resources, the problem of environmental pollution caused by coal burning has become increasingly prominent, seriously restricting the sustainable development of my country's economy and society. develop. [0004] Controlling sulfur dioxide pollution is the most urgent task in the field of air pollution control in my country. In order to control the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/30
Inventor 李军张然王芳杰刘艳芳崔龙鹏
Owner CHINA PETROLEUM & CHEM CORP
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