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Liquid cobalt sulfonated phthalocyanine catalyst for liquefied petroleum gas mercaptan removal

A technology of cobalt sulfonated phthalocyanine and liquid catalyst, which is applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, gas fuel, etc., and can solve the problem of poor solubility of liquefied petroleum gas sweetening catalyst , achieve excellent sweetening activity, solve poor solubility, and be easy to operate

Active Publication Date: 2015-07-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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AI Technical Summary

Problems solved by technology

[0009] The present invention aims to solve the problem of poor solubility of existing liquefied petroleum gas sweetening catalysts, and aims to provide a liquid metal sulfonated phthalocyanine catalyst and its application in liquefied petroleum gas sweetening

Method used

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  • Liquid cobalt sulfonated phthalocyanine catalyst for liquefied petroleum gas mercaptan removal
  • Liquid cobalt sulfonated phthalocyanine catalyst for liquefied petroleum gas mercaptan removal
  • Liquid cobalt sulfonated phthalocyanine catalyst for liquefied petroleum gas mercaptan removal

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Embodiment 1

[0031] Test the solubility of the four-β-p-sulfonic acid group phenoxy cobalt phthalocyanine complex in water and 10% NaOH solution respectively, and compare with the solubility of the solid sulfonated cobalt phthalocyanine currently used in industry, The results are listed in Table 1.

[0032] Table 1 Solubility of cobalt phthalocyanine of the present invention in water and lye and contrast with solid sulfonated cobalt phthalocyanine

[0033]

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Abstract

The invention discloses a liquid cobalt sulfonated phthalocyanine catalyst for liquefied petroleum gas mercaptan removal; the liquid catalyst is composed of an active component tetra-beta-p-sulfonic phenoxy phthalocyanine cobalt, a stabilizer propylene glycol dimethyl ether, one or a combination of N-methyl diethanolamine or triethanolamine, an emulsifier octadecyl dimethyl benzyl ammonium chloride and an NaOH solution. The invention also discloses a tetra-beta-p-sulfonic phenoxy phthalocyanine cobalt structure designed for the first time, and a catalytic conversion effect of the liquid catalyst on liquefied gas mercaptan. The catalyst active component tetra-beta-p-sulfonic phenoxy phthalocyanine cobalt has extremely good solubility in water and alkali liquids, and has higher mercaptan removal activity.

Description

technical field [0001] The invention belongs to the field of petroleum processing, and in particular relates to the application of a liquid cobalt sulfonated phthalocyanine catalyst in a liquefied gas sweetening process. Background technique [0002] Liquefied Petroleum Gas (LPG) contains harmful components such as mercaptans. Because mercaptans are corrosive and emit foul odor, if they are not removed, they will have a great impact on the environment and the subsequent processing of liquefied petroleum gas. At present, LPG sweetening and refining mainly adopts Merox extraction-liquid-phase catalytic oxidation process or fiber membrane sweetening process. The principles of these two processes for removing mercaptans from liquefied gas are basically the same. First, the mercaptans in the liquefied gas are extracted by catalyst-lye solution, and then the sodium mercaptide in the extract is converted into Disulfide, while lye and catalyst are regenerated, the total chemical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C07D487/22C10L3/12
Inventor 夏道宏程振华宋兆阳段尊斌朱丽君
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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