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Occarboxyl cobalt phthalocyanine catalyst for natural gas demercaptan

A technology of cobalt phthalocyanine and catalyst, which is applied in the application field of cobalt phthalocyanine catalyst in natural gas sweetening, can solve the problems of less research on natural gas sweetening catalysts, complex metal phthalocyanine structure, and low catalytic activity, and achieve excellent Sweetening activity, simple preparation method, and high product purity

Inactive Publication Date: 2015-12-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This sulfonated metal phthalocyanine has high water solubility and can be used as a photosensitizer, photodynamic agent or photosensitizer, but the water-soluble metal phthalocyanine has a complex structure and high preparation cost, and it cannot be used as a petroleum fraction Sweetening catalyst
[0006] At present, there are few studies on natural gas sweetening catalysts
Moreover, cobalt phthalocyanine catalysts generally have problems such as poor solubility or low catalytic activity. Therefore, it is necessary to develop high-activity and high-solubility natural gas sweetening catalysts.

Method used

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  • Occarboxyl cobalt phthalocyanine catalyst for natural gas demercaptan
  • Occarboxyl cobalt phthalocyanine catalyst for natural gas demercaptan
  • Occarboxyl cobalt phthalocyanine catalyst for natural gas demercaptan

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Embodiment 1

[0027] Test the solubility of the four-beta-(m-dicarboxyphenoxy) cobalt phthalocyanine catalyst of the present invention in 10% NaOH solution, and carry out with the solubility of common solid sulfonated cobalt phthalocyanine and polyphthalocyanine cobalt in industry at present For comparison, the results are listed in Table 1.

[0028] Table 1 Solubility contrast in lye of octacarboxyl phthalocyanine cobalt of the present invention and industrial solid phthalocyanine cobalt catalyst

[0029]

[0030] As can be seen from Table 1, the solubility of the solid sulfonated cobalt phthalocyanine and polyphthalocyanine cobalt used in industry at present is no more than 350 μg / g in 10% NaOH solution, while the solubility of the catalyst of the present invention in 10% NaOH solution exceeds 1200 μg / g . The better the catalyst is dissolved and dispersed in the alkali solution, the stronger the catalytic conversion ability to sodium mercaptide is, so it has better catalytic sweetenin...

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Abstract

The invention belongs to the field of petroleum and natural gas, and discloses an occarboxyl cobalt phthalocyanine catalyst for natural gas demercaptan. The catalyst is specifically prepared from 4-beta-(dicarboxyl phenoxyl) cobalt phthalocyanine. The invention further discloses a structure of the 4-beta-(dicarboxyl phenoxyl) cobalt phthalocyanine which is designed for the first time and a catalytic conversion effect of the catalyst on natural gas mercaptan. The catalyst 4-beta-(dicarboxyl phenoxyl) cobalt phthalocyanine is good in solubleness in alkali liquor and has the high activity of catalytic demercaptan.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas, and in particular relates to the application of an octacarboxyphthalocyanine cobalt catalyst in natural gas sweetening. Background technique [0002] In recent years, the global production and trade of liquefied natural gas (LNG) has become increasingly active. LNG has become a scarce and clean resource and is becoming a new hot spot in the oil and gas industry. With the intensification of competition for global oil and gas resources, oil and gas resources are gradually developing in unfavorable directions such as inferior quality and high sulfur content. At present, solving the problem of high sulfur content in natural gas is a key link in the deep development of natural gas. In addition to hydrogen sulfide, high-sulfur natural gas also contains harmful components such as mercaptans that are difficult to remove. Mercaptan is corrosive and emits a foul smell. If it is not removed, it wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C10L3/10
Inventor 夏道宏崔娜程振华刘元直朱丽君周玉路项玉芝
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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