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Special activated carbon for adsorption separation of chlorine gas and oxygen

A technology of adsorption separation and activated carbon, which is applied in the direction of oxygen production, chlorine/hydrogen chloride, chlorine/hydrogen chloride purification, etc.

Active Publication Date: 2014-04-30
FININGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In summary, among the above-mentioned separation technologies of various chlorine-containing gases, the industrialized technologies are all unsatisfactory

Method used

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  • Special activated carbon for adsorption separation of chlorine gas and oxygen
  • Special activated carbon for adsorption separation of chlorine gas and oxygen

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Embodiment 1

[0032] A special activated carbon used for the adsorption and separation of chlorine and oxygen, comprising: the raw activated carbon is sequentially impregnated, dried, roasted and decomposed to make a finished product.

[0033] In this example, the physical properties of the special activated carbon are: bulk density 0.40~0.45 kg / L, strength ≥ 5.5 N / mm, specific surface ≥ 900 m 2 / g, pore volume 0.9~1.0 ml / g, abrasion ≤5%.

[0034] In the present embodiment, the chemical composition of the special activated carbon is: 0.5-2.0% by weight of La 2 o 3 , 1.2~1.5% SiO 2 , CaO+MgO≤2.0%, and the balance is C.

[0035] In this embodiment, the pressure of the special activated carbon is negative pressure, normal pressure—2.5MPa; the temperature of use is normal temperature—180°C.

[0036] In the present embodiment, the impregnation process is: impregnating La(NO 3 ) 3 The aqueous solution, the concentration is 5-12% (weight %); The immersion temperature is 50-80 ℃, and the imme...

Embodiment 2

[0040] A special activated carbon used for the adsorption and separation of chlorine and oxygen, comprising: the raw activated carbon is sequentially impregnated, dried, roasted and decomposed to make a finished product.

[0041] In the present embodiment, the chemical composition of described special-purpose activated carbon is: the La of 0.5% by weight percentage composition 2 o 3 , 1.2% SiO 2 , CaO+MgO≤2.0%, and the balance is C.

[0042] In the present embodiment, the impregnation process is: impregnating La(NO 3 ) 3 The aqueous solution, the concentration is 5% (weight %); The immersion temperature is 50 ℃, and the immersion time is 0.5 hours.

[0043] In this embodiment, the drying conditions are as follows: the drying temperature is 110° C., and the drying time is 1.0 hour.

[0044] In the present embodiment, the conditions of the calcination and decomposition are: inert gas (N 2 +Ar) ≥ 99.9% nitrogen protection heat treatment, the oxygen content in nitrogen ≤ 0.1...

Embodiment 3

[0046] A special activated carbon used for the adsorption and separation of chlorine and oxygen, comprising: the raw activated carbon is sequentially impregnated, dried, roasted and decomposed to make a finished product.

[0047] In the present embodiment, the chemical composition of the special activated carbon is: 2.0% La by weight 2 o 3 , 1.5% SiO 2 , CaO+MgO≤2.0%, and the balance is C.

[0048] In the present embodiment, the impregnation process is: impregnating La(NO 3 ) 3 The aqueous solution, the concentration is 12% (weight %); The immersion temperature is 80 ℃, and the immersion time is 1.0 hour.

[0049] In this embodiment, the drying conditions are as follows: the drying temperature is 120° C., and the drying time is 1.5 hours.

[0050] In the present embodiment, the conditions of the calcination and decomposition are: inert gas (N 2 +Ar) ≥ 99.9% nitrogen protection heat treatment, the oxygen content in nitrogen ≤ 0.10%, the calcination temperature is 500 ℃, a...

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Abstract

The invention discloses special activated carbon for adsorption separation of chlorine gas and oxygen. A product is prepared from activated carbon by the processes of dipping, drying and baking for decomposing in sequence. The special activated carbon has the physical properties that the bulk density is 0.40-0.45 kg / L, the strength is greater than or equal to 5.5N / mm, the specific surface is greater than or equal to 900m<2> / g, the pore volume is 0.9-1.0 ml / g, and the abrasion is smaller than or equal to 5%. By virtue of the special activated carbon, the related application performance such as the adsorption and separation efficiency and stability, the compression strength and the abrasion resistance quality uniformity of the chlorine gas and the oxygen are improved, and not only is the purity of the products, namely the chlorine gas and the oxygen, is improved, but also the safe and stable operation of an industrial device is facilitated.

Description

technical field [0001] The invention relates to a special active carbon used for the adsorption and separation of chlorine and oxygen, which is mainly used for efficiently separating chlorine and oxygen from the mixed gas generated by the catalytic oxidation reaction of hydrogen chloride by adopting an adsorption and separation method. Background technique [0002] my country is a big producer and consumer of chlorine gas. There are more than 220 domestic manufacturers producing chlorine gas. Some enterprises use chlorine gas for their own use. There are about 150 enterprises that sell commercial chlorine gas. In 2003, the total output was 2.7053 million tons. In 2012, China's total consumption of chlorine gas exceeded 20 million tons, accounting for about 1 / 3 of the world's total chlorine gas consumption. There are more than 200 kinds of chlorine-containing products produced in my country, including more than 100 kinds of organic chlorine products, more than 50 kinds of ino...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/28C01B13/02C01B7/07
Inventor 王农跃冯孝庭邵建明闻国强赵全忠
Owner FININGS CO LTD
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