A cobalt octacarboxyphthalocyanine catalyst for sweetening natural gas

A cobalt phthalocyanine and natural gas technology, which is applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, gas fuels, etc., can solve the problem of less research on natural gas sweetening catalysts, complex metal phthalocyanine structures, Catalytic activity is not high, to achieve the effect of excellent sweetening activity, simple preparation method and high product purity

Inactive Publication Date: 2017-11-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
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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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  • A cobalt octacarboxyphthalocyanine catalyst for sweetening natural gas
  • A cobalt octacarboxyphthalocyanine catalyst for sweetening natural gas
  • A cobalt octacarboxyphthalocyanine catalyst for sweetening natural gas

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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 comparison of octacarboxyl cobalt phthalocyanine of the present invention and industrial solid cobalt phthalocyanine catalysts in alkaline solution

[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 ca...

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Abstract

The invention belongs to the field of petroleum and natural gas. The invention discloses an octacarboxyl phthalocyanine cobalt natural gas sweetening catalyst. The specific composition of the catalyst is four-beta-(m-dicarboxyphenoxy) phthalocyanine cobalt. The invention also discloses the structure of tetra-β-(m-dicarboxyphenoxy) cobalt phthalocyanine designed for the first time in the invention, and the catalytic conversion effect of the catalyst on natural gas mercaptan. The catalyst tetra-β-(m-dicarboxyphenoxy) cobalt phthalocyanine of the present invention has good solubility in alkaline solution and has high catalytic sweetening activity.

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 Patents(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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