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Hydrolytic absorption type desulfurizing agent, preparation method and application thereof

A desulfurizer and absorption-type technology, which is applied in the field of hydrolysis and absorption-type desulfurizer and its preparation, can solve the problems of inapplicable treatment and achieve the effect of increasing sulfur capacity and good hydrolysis activity

Active Publication Date: 2021-03-26
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the carbonyl sulfide hydrolysis desulfurization agent in the prior art is not suitable for the treatment of high-concentration carbonyl sulfide occasions, thereby providing a hydrolysis absorption type desulfurization agent and its preparation method and application

Method used

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  • Hydrolytic absorption type desulfurizing agent, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] This embodiment provides a hydrolytic absorption type desulfurizer, the preparation method of which is as follows:

[0029] 287.55g of zinc sulfate heptahydrate and 155.60g of calcium hydroxide were put in the mixer and mixed for 20min, then 77.15g of concentration was added to the potassium hydroxide aqueous solution of 40wt%, and continued to mix in the mixer for 15min, and then the mixer The material in is extruded and dried at 100°C for 6 hours.

Embodiment 2

[0031] This example provides a hydrolytic absorption type desulfurizer, the preparation method of which is as follows:

[0032] After putting 269.54g of zinc sulfate hexahydrate and 148.19g of calcium hydroxide in a kneader and mixing for 30min, adding 58.44g of a concentration of 48wt% potassium hydroxide aqueous solution, continuing to mix in a kneader for 30min, and then mixing the materials in the kneader Extrude and dry at 150°C for 1 hour.

Embodiment 3

[0034] This example provides a hydrolytic absorption type desulfurizer, the preparation method of which is as follows:

[0035] After putting 287.55g of zinc sulfate heptahydrate and 159.31g of calcium hydroxide in the mixing mill and mixing for 50min, adding 67.32g concentration is 50wt% potassium hydroxide aqueous solution, continuing to mix in the mixing mill for 40min, and then the mixing mill The material in is extruded and dried at 120°C for 3 hours.

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Abstract

The invention relates to the technical field of industrial gas desulfurization, in particular to a hydrolytic absorption type desulfurizing agent, a preparation method and application thereof. According to the hydrolytic absorption type desulfurizing agent, zinc sulfate, calcium hydroxide and a potassium hydroxide solution are adopted as the raw materials, the molar ratio of the raw materials is limited, the obtained hydrolytic absorption type desulfurizing agent has good hydrolytic activity on carbonyl sulfide and carbon disulfide, the sulfur capacity can be remarkably improved, and the hydrolytic absorption type desulfurizing agent is suitable for treatment of high-concentration carbonyl sulfide occasions, especially, high-concentration carbonyl sulfide in feed gas produced from inferiorcoal and coke-oven gas can be removed, and hydrogen sulfide generated after hydrolysis of carbonyl sulfide and carbon disulfide can quickly react with calcium zincate, so that hydrogen sulfide is removed, hydrolysis balance of carbonyl sulfide and carbon disulfide is broken through, the desulfurization precision of carbonyl sulfide can reach 0.021mgS / m<3>, the desulfurization precision of carbondisulfide can reach 0.07mgS / m<3>; and the desulfurization precision of hydrogen sulfide can reach 0.021mgS / m<3>.

Description

technical field [0001] The invention relates to the technical field of industrial gas desulfurization, in particular to a hydrolysis absorption type desulfurizer and its preparation method and application. Background technique [0002] As we all know, sulfides, especially carbonyl sulfide (COS), widely exist in chemical raw materials produced from coal, coke, residual oil and natural gas, such as natural gas, oilfield associated gas, refinery gas, liquid phase propylene, liquefied petroleum gas, etc. Wait. Carbonyl sulfide, hydrogen sulfide, and carbon disulfide and other sulfides in these chemical raw material gases not only corrode pipeline equipment, but also cause sulfur poisoning and deactivation of catalysts in downstream processes. Therefore, carbonyl sulfide, hydrogen sulfide, and The removal of sulfides such as carbon disulfide has been highly valued. [0003] Hydrogen sulfide in sulfide can be removed with iron oxide or zinc oxide desulfurizer, but it is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/48B01D53/50B01D53/52
CPCB01D53/81B01D53/52B01D53/485B01D53/508B01D53/48B01D2251/304B01D2251/404B01D2251/604
Inventor 李新单红飞
Owner SHENYANG SANJUKAITE CATALYST
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