Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect

A technology of sulfur sedimentation and composition, which is applied in the field of improving the effect of liquid-phase catalytic oxidation desulfurization, can solve the problems of increasing the amount of foam and surfactant, affecting the rapid sedimentation of sulfur particles, etc., to promote agglomeration and sedimentation, facilitate separation, and suppress sulfur foam the effect of

Active Publication Date: 2014-11-12
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, when the density and pH of the desulfurization solution change or the amount of gas introduced increases, the amount of surfactant needs to be increased, resulting in a large amount of foam and affecting the rapid settlement of sulfur particles.

Method used

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  • Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect
  • Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect
  • Sulfur deposition agent composition and method for improving liquid phase catalytic oxidation desulphurization effect

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preparation example Construction

[0022] The preparation method of the sulfur precipitant composition of the present invention has no special requirements, as long as the flocculant, the alkylphenol polyoxyethylene ether with a polymerization degree of 8-12, the alkylphenol polyoxyethylene ether with a polymerization degree of 4-6 The ether and co-solvent can be fully mixed, and there is no special requirement on the order of adding the components.

[0023] In a preferred situation of the present invention, the sulfur precipitating agent composition further contains water, and the content of the water is such that the sulfur precipitating agent composition can form a uniform solution. Preferably, the content of water is 7-18.5 parts by weight relative to 1 part by weight of flocculant. By making the sulfur precipitant composition in the form of a solution, it can be beneficial to the use and addition of the sulfur precipitant composition in practical applications, and when used in a liquid-phase catalytic oxid...

Embodiment 1

[0042] Mix 6g of nonylphenol ethoxylate (NP-10) and 0.5g of octylphenol ethoxylate (OP-4) with 3g of isopropanol, and then mix them with 8g of polyaluminum chloride (purchased from Henan Huamingshui Treatment Materials Co., Ltd.) and 82.5g of water were mixed to obtain sulfur precipitant composition A1.

Embodiment 2

[0046] A sulfur sedimentation agent composition was prepared according to the method of Example 1, except that the flocculant polyaluminum chloride was replaced by sorbitan of the same weight. The sulfur precipitating agent composition A2 was obtained.

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Abstract

The invention provides a sulfur deposition agent composition including a flocculant, alkyl phenol polyoxyethylene ether with the degree of polymerization of 8-12, alkyl phenol polyoxyethylene ether with the degree of polymerization of 4 - 6 and a cosolvent. The invention also provides a method for improving the liquid phase catalytic oxidation desulfurization effect. When the sulfur deposition agent composition is used for liquid phase catalytic oxidation desulfurization process, large sulfur particles (up to maximum 46 [mu]m can be obtained, the sulfur deposition agent composition can effectively inhibit the sulfur foam production, and improve the sedimentation rate of sulfur particles, and more than 96% of the sulfur particles in a desulfurization solution can be rapidly settled.

Description

technical field [0001] The invention relates to a sulfur sedimentation agent composition and a method for improving the effect of liquid-phase catalytic oxidation desulfurization. Background technique [0002] Liquid-phase catalytic oxidation desulfurization technology is a wet oxidation sulfur recovery process, which uses high-valent metal ions as liquid catalysts to convert H 2 S is converted directly to elemental sulfur. At the same time, the used metal catalyst is regenerated by air oxidation and recycled. At present, liquid-phase catalytic oxidation desulfurization technology has been widely used in natural gas, petrochemical and other fields. Common processes include iron-based processes (such as LO-CAT process, SulFerox process, etc.), vanadium-based processes (ADA process), etc. [0003] These wet oxidation sulfur recovery processes generally have shortcomings such as small sulfur particles, slow precipitation speed, and low sulfur recovery rate, which lead to high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/77B01D53/46
Inventor 高敏李本高余伟发李财富侯研博
Owner CHINA PETROLEUM & CHEM CORP
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