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Method for improving coke adsorption

An adsorption and coke technology, applied in chemical instruments and methods, and other chemical processes, can solve problems such as inconvenient use, secondary pollution, and high energy consumption

Inactive Publication Date: 2013-01-23
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2) The coke modified by the crushing method is a fine particle, which is prone to accumulation during use, resulting in inconvenient use
[0005] 3) The chemical corrosion method is easy to cause waste acid and waste liquid during the modification process, forming secondary pollution
[0006] 3) The crushing method has high energy consumption in the modification process, resulting in high cost of coke modification

Method used

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  • Method for improving coke adsorption
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Experimental program
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Effect test

Embodiment 1

[0027] A method for improving coke adsorption, the steps of which are:

[0028] 1) Put the coke into a closed reactor resistant to 1200°C and above;

[0029] 2) Fill the closed reactor with nitrogen until there is no air in the closed reactor; while filling the nitrogen, heat the closed reactor to 800-830°C;

[0030] 3) When the closed reactor is heated to 800°C, start to feed CO 2 Gas until the pressure in the closed reactor reaches 1.1Mpa, and stabilize the pressure for 20 minutes under the conditions of 1.1Mpa pressure and 800-830°C temperature;

[0031] 4) After the voltage stabilization is over, stop the CO 2 Gas input and heating;

[0032] 5) stop CO 2 Immediately after the gas input, the nitrogen gas is input until there is no CO in the closed reactor. 2 Until the gas exists; at the same time, the closed reactor is naturally cooled to room temperature;

[0033] 6) Take out the modified coke in the closed reactor.

Embodiment 2

[0035] A method for improving coke adsorption, the steps of which are:

[0036] 1) Put the coke into a closed reactor resistant to 1200°C and above;

[0037] 2) Fill the closed reactor with argon until there is no air in the closed reactor; while filling the closed reactor with argon, heat the closed reactor to 890-910°C;

[0038] 3) When the closed reactor is heated to 800°C, start to feed CO 2 Gas until the pressure in the closed reactor reaches 1.3Mpa, and stabilize the pressure for 45 minutes under the pressure of 1.3Mpa and the temperature of 890-910°C;

[0039] 4) After the voltage stabilization is over, stop the CO 2 Gas input and heating;

[0040] 5) stop CO 2 After the gas is input, the argon gas is input immediately until there is no CO in the closed reactor. 2 Until the gas exists; meanwhile, the airtight reactor is naturally cooled to room temperature;

[0041] 6) Take out the modified coke in the closed reactor.

Embodiment 3

[0043] A method for improving coke adsorption, the steps of which are:

[0044] 1) Put the coke into a closed reactor resistant to 1200°C and above;

[0045] 2) Fill the closed reactor with nitrogen until there is no air in the closed reactor; while filling the nitrogen, heat the closed reactor to 950-965°C;

[0046] 3) When the closed reactor is heated to 800°C, start to feed CO 2 Gas until the pressure in the closed reactor reaches 1.55Mpa, and stabilize the pressure for 70 minutes under the conditions of 1.55Mpa pressure and 950-965°C temperature;

[0047] 4) After the voltage stabilization is over, stop the CO 2 Gas input and heating;

[0048] 5) stop CO 2 Immediately after the gas input, the nitrogen gas is input until there is no CO in the closed reactor. 2 Until the gas exists; at the same time, the closed reactor is naturally cooled to room temperature;

[0049] 6) Take out the modified coke in the closed reactor.

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Abstract

The invention relates to a method for improving coke adsorption. The method comprises the following steps of: putting coke into a closed reactor; charging inert gas such as nitrogen or argon into the closed reactor till the closed reactor has no air; when the inert gas such as nitrogen or argon is charged, heating the closed reactor to between 800 and 1,100 DEG C; when the closed reactor is heated to 800 DEG C, introducing CO2 gas into the closed reactor till the pressure in the closed reactor reaches 1.1 to 2.0MPa, and stabilizing the pressure for 20 to 120 minutes; after the pressure stabilization is finished, stopping introducing the CO2 gas and heating; then introducing the inert gas such as nitrogen or argon into the closed reactor till the closed reactor has no CO2 gas; meanwhile, naturally cooling the closed reactor to room temperature; and taking the modified coke out. The porosity of the modified coke is improved to 60 percent from primary 30 percent around; the vacuum degree is reduced to 800kg / m<3>, and reduced by nearly 30 percent compared with the un-modified coke; and inner micro-pores of the coke are obviously enlarged.

Description

technical field [0001] The invention relates to coke, in particular to a method for increasing or improving the adsorption performance of coke. Background technique [0002] In the field of environmental technology, coke is more and more used as an adsorbent because of its certain adsorption properties, low cost, and easy availability. However, the low adsorption performance of coke has restricted the further development and application of this adsorbent. According to actual measurement, the true density of coke is generally 1100kg / m 3 The porosity is generally around 35%. True density and porosity are an important index affecting the adsorption performance of coke. If the coke is not modified, the adsorption performance of coke will be limited. Therefore, increasing the porosity of coke, reducing the true density of coke, and improving the adsorption performance of coke are the keys to popularize the application of coke as an adsorbent in environmental engineering. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 刘尚超薛改凤朱书景张垒方宏辉张前香陈鹏宋子逵张雪红
Owner 武钢集团有限公司
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