Adsorbing material for removing organic sulfur in coke oven gas and application of adsorbing material

An adsorption material, coke oven gas technology, applied in inorganic chemistry, other chemical processes, combustible gas purification, etc.

Active Publication Date: 2021-07-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Invention patent CN105107459 A discloses "a preparation method for simultaneously removing hydrogen sulfide, carbonyl sulfide and carbon disulfide adsorbent", which is obtained by preparing biomass Activated carbon and KOH solid powder are dry-mixed and roasted to achieve the effect of improving the removal of hydrogen sulfide, carbonyl sulfide and carbon disulfide. Although the desulfurization effect of this method is good, the preparation method is cumbersome and the cost is high. Difficulty in practical application in industrial production
[0006] Invention patent CN102600850 A discloses "a preparation method of a catalyst for simultaneously removing carbonyl sulfide and carbon disulfide", the method is by first modifying activated carbon with KOH, and then The obtained activated carbon is impregnated in metal salts of different concentrations, and finally dried and roasted to obtain a catalyst for simultaneous removal of carbonyl sulfide and carbon disulfide. However, the two-step operation process of this method is too cumbersome and difficult to be used in large-scale industrial production processes. middle

Method used

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  • Adsorbing material for removing organic sulfur in coke oven gas and application of adsorbing material
  • Adsorbing material for removing organic sulfur in coke oven gas and application of adsorbing material
  • Adsorbing material for removing organic sulfur in coke oven gas and application of adsorbing material

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Embodiment 1

[0031] An adsorption material for removing organic sulfur in coke oven gas, the preparation steps of which are as follows:

[0032] 1) Wash granular activated carbon (blue carbon, particle size 0.5-1.0 cm) with water until the pH becomes neutral, and dry at 110°C for 4 hours to obtain pretreated activated carbon for later use;

[0033]2) Weigh N-methylimidazole, ethyl bromide and anhydrous sodium acetate respectively according to the molar ratio of 1:1.1:1.2. Then add weighed N-methylimidazole and anhydrous sodium acetate into the round bottom flask, then add acetone solvent and activated carbon (the mass ratio of acetone solvent and activated carbon is 2:1), and then use a constant pressure funnel to weigh Bromoethane was slowly added dropwise into a round-bottomed flask for a stirring reaction (reaction temperature 20°C, stirring for 8 h), so that N-methylimidazole, bromoethane and anhydrous sodium acetate reacted in situ on activated carbon to form 1 -Ethyl-3-methylimidazo...

Embodiment 2

[0036] An adsorption material for removing organic sulfur in coke oven gas, the preparation steps of which are as follows:

[0037] 1) Wash granular activated carbon (blue carbon, particle size 0.5-1.0 cm) with water until the pH becomes neutral, and dry at 110°C for 6 hours to obtain pretreated activated carbon for later use;

[0038] 2) Weigh N-methylimidazole, ethyl bromide and anhydrous sodium acetate respectively according to the molar ratio of 1:1.1:1.2. Then add weighed N-methylimidazole and anhydrous sodium acetate into the round bottom flask, then add acetone solvent and activated carbon (the mass ratio of acetone solvent and activated carbon is 2:1), and then use a constant pressure funnel to weigh Bromoethane was slowly added dropwise into a round bottom flask, and the reaction was stirred (reaction temperature 20°C, stirred for 10 h), so that N-methylimidazole, bromoethane and anhydrous sodium acetate reacted in situ on activated carbon to form 1 -Ethyl-3-methylim...

Embodiment 3

[0041] An adsorption material for removing organic sulfur in coke oven gas, the preparation steps of which are as follows:

[0042] 1) Wash granular activated carbon (blue carbon, particle size 0.5-1.0 cm) with water until the pH becomes neutral, and dry at 110°C for 8 hours to obtain pretreated activated carbon, which is ready for use;

[0043] 2) Weigh N-methylimidazole, ethyl bromide and anhydrous sodium acetate respectively according to the molar ratio of 1:1.1:1.2. Then add weighed N-methylimidazole and anhydrous sodium acetate into the round bottom flask, then add acetone solvent and activated carbon (the mass ratio of acetone solvent and activated carbon is 2:1), and then use a constant pressure funnel to weigh Bromoethane was slowly added dropwise into a round-bottomed flask for a stirring reaction (reaction temperature 20°C, stirring for 12 h), so that N-methylimidazole, bromoethane and anhydrous sodium acetate reacted in situ on activated carbon to form 1 -Ethyl-3-m...

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Abstract

The invention discloses an adsorbing material for removing organic sulfur in coke oven gas and application of the adsorbing material. The adsorbing material is prepared by the following steps: by taking activated carbon as a carrier, carrying out in-situ reaction on N-methylimidazole, bromoethane and anhydrous sodium acetate on the activated carbon to generate 1-ethyl-3-methylimidazole acetate ionic liquid so as to achieve loading of the 1-ethyl-3-methylimidazole acetate ionic liquid on the activated carbon in situ. The adsorbing material can simultaneously remove carbonyl sulfide and carbon disulfide in coke oven gas at a low temperature (20-50 DEG C), is used for removing organic sulfur in coke oven gas, has the advantages of pertinence, simple process, convenience in operation, low operation cost, no corrosion to equipment and the like, and has potential industrial application value.

Description

technical field [0001] The invention relates to the technical field of adsorption and separation of organic sulfur in coke oven gas, in particular to an adsorption material for organic sulfur in coke oven gas and its application. Background technique [0002] Activated carbon is prepared by pyrolysis and activation of carbon-containing raw materials such as wood, coal and petroleum coke, usually in powder or granular form, with developed pore structure, large specific surface area and rich surface chemical groups , a porous amorphous carbon material with strong specific adsorption capacity. Modification of activated carbon by chemical or physical means can reduce the ash content of activated carbon and improve the adsorption capacity. Therefore, modified activated carbon materials are widely used in sewage treatment, air pollution prevention and other fields. [0003] As an emerging green solvent, ionic liquids (ILs) are salts composed of cations and anions that are liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/32C10K1/00C10K1/32
CPCB01J20/20B01J20/22B01J20/3204B01J20/3244B01J20/28061B01J20/28016B01J20/28004C10K1/004C10K1/32
Inventor 王建国谢亮李岩峰孔祥宇张乐乐
Owner ZHEJIANG UNIV OF TECH
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