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Adsorbent and method for treating exhaust gas containing sulfur dioxide

A sulfur dioxide and adsorbent technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of low utilization rate of lye and desulfurization rate, improve adsorption performance and selective absorption performance, and improve treatment efficiency. , the effect of strong absorption capacity

Active Publication Date: 2021-03-23
HEBEI CAIKE CHEM CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of low lye utilization rate and low desulfurization rate in the existing adsorption of sulfur dioxide-containing waste gas, the present invention provides an adsorbent and method for treating sulfur dioxide-containing waste gas

Method used

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  • Adsorbent and method for treating exhaust gas containing sulfur dioxide

Examples

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Effect test

Embodiment 1

[0032] An adsorbent for treating exhaust gas containing sulfur dioxide: 19.5% diphenylsulfoxide, 10% 2,3-diphenylpiperazine, 30% tetraethylene glycol dimethyl ether, 0.5% copper sulfate and 40% deionized water .

[0033] The preparation method of above-mentioned adsorbent comprises the steps:

[0034] Weigh each component according to the designed proportion, mix each component uniformly, heat to 40° C., and stir at 300 rpm for 1 h to obtain the adsorbent.

[0035] The method for utilizing the above-mentioned adsorbent to treat exhaust gas containing sulfur dioxide comprises the following steps:

[0036] At a temperature of 30°C, the exhaust gas containing sulfur dioxide is 3 The speed of / h passes in the above-mentioned adsorbent, detects the outlet sulfur dioxide content, when the sulfur dioxide concentration reaches 0.8mg / L, stop ventilating, under the stirring speed of 100rpm, add 15wt% sodium carbonate solution 750g in every liter of adsorbent, separate The aqueous pha...

Embodiment 2

[0038] An adsorbent for treating exhaust gas containing sulfur dioxide: 15% diphenylsulfoxide, 7% 2,3-diphenylpiperazine, 27% tetraethylene glycol dimethyl ether, 1% copper nitrate and 50% deionized water .

[0039] The preparation method of above-mentioned adsorbent comprises the steps:

[0040] Weigh each component according to the designed proportion, mix each component uniformly, heat to 45° C., and stir at 500 rpm for 0.5 h to obtain the adsorbent.

[0041] The method for utilizing the above-mentioned adsorbent to treat exhaust gas containing sulfur dioxide comprises the following steps:

[0042] At a temperature of 20°C, the exhaust gas containing sulfur dioxide is 3 The discharge speed of / h is passed in the above-mentioned adsorbent, detects outlet sulfur dioxide content, when sulfur dioxide concentration reaches 0.8mg / L, stops ventilating, under the stirring speed of 150rpm, adds the sodium carbonate solution 550g of 20wt% in every liter of adsorbent, The aqueous p...

Embodiment 3

[0044] An adsorbent for treating exhaust gas containing sulfur dioxide: 20% diphenylsulfoxide, 5% 2,3-diphenylpiperazine, 15% tetraethylene glycol dimethyl ether, 2% copper chloride and 58% deionized water %.

[0045] The preparation method of above-mentioned adsorbent comprises the steps:

[0046]Weigh each component according to the designed ratio, mix each component uniformly, heat to 50° C., and stir at 450 rpm for 1.5 h to obtain the adsorbent.

[0047] The method for utilizing the above-mentioned adsorbent to treat exhaust gas containing sulfur dioxide comprises the following steps:

[0048] At a temperature of 60°C, the exhaust gas containing sulfur dioxide is 3 The discharge speed of / h is passed in the above-mentioned adsorbent, detects outlet sulfur dioxide content, when sulfur dioxide concentration reaches 0.8mg / L, stops ventilating, under the stirring velocity of 100rpm, adds the sodium carbonate solution 450g of 25wt% in every liter of adsorbent, The aqueous ph...

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Abstract

The present invention provides an adsorbent and a method for treating sulfur dioxide containing waste gas. The adsorbent comprises the following components by weight: 10 to 20% of diphenyl sulfoxide,5 to 10% of 2,3-diphenylpiperazine, 15 to 30% of tetraethylene glycol dimethyl ether, 0.5 to 2% of soluble copper salt and 40 to 60% deionized water. The adsorbent for treating the sulfur dioxide containing waste gas provided by the invention has high absorption rate and large absorption capacity to sulfur dioxide gas, has high desorption rate and high adsorption selectivity at the same time, is free of adsorption effect on other components in waste gas, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of gas separation, in particular to an adsorbent and a method for treating waste gas containing sulfur dioxide. Background technique [0002] SO 2 It is the main substance that forms acid rain, which mainly comes from the flue gas emission of coal-fired power plants. The abundance of SO in the air 2 It not only damages human health, but also causes great harm to forests, soils, lakes and other systems when it meets the acid rain formed by water. Therefore, it is necessary to strengthen the protection of SO 2 emission control. Adsorption has become the most promising flue gas desulfurization method due to its advantages of low investment, low energy consumption, simple equipment, and no secondary pollution. At present, the mainstream flue gas desulfurization technology uses various alkaline absorbents or adsorbents to capture SO in flue gas. 2 and transform it into more stable sulfur-containing compounds...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50
CPCB01D53/507B01D2252/504
Inventor 杨福广孙玉亮邵玉凤崔北文崔凤桐付鹏刘小平司灵敏王淑梅杜俊霞王红强董春艳
Owner HEBEI CAIKE CHEM CO LTD
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