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A method for separating sulfonium salts from petroleum matrix

A technology for petroleum and sulfonium salts, applied in the field of separation of sulfonium salts, can solve the problems of repeated precipitation and incomplete precipitation, and achieve the effects of simple operation, avoiding incomplete precipitation and high separation efficiency.

Active Publication Date: 2021-01-29
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN103756719A provides a method for separating sulfonium salts by precipitation, which mainly includes: dissolving petroleum components in ethanol, methylene chloride or ethylene dichloride, and then adding an alkylating agent for alkylation reaction , to filter; the filtrate is mixed with a C5-C7 alkane solvent, then the precipitate is separated, and the precipitate is taken; the precipitate is dissolved in dichloromethane, chloroform or acetonitrile, and then a dealkylation reagent is added for a dealkylation reaction; After separation and purification by column chromatography, sulfur-containing compounds were separated; the method for separating sulfur-containing compounds in petroleum components can completely separate sulfur-containing compounds from hydrocarbons and other heteroatom compounds, but in practical applications, this method has Disadvantages such as incomplete precipitation and the need for multiple precipitations

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  • A method for separating sulfonium salts from petroleum matrix

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Embodiment 1

[0032] This embodiment provides a method for separating sulfonium salts from petroleum substrates, wherein the method is realized by using a solid-phase chromatographic column for separating sulfonium salts from petroleum substrates. The structural representation of the solid-phase chromatographic column is as follows figure 1 shown, from figure 1 As can be seen from the figure, the solid-phase chromatographic column includes a column body 1 and two column caps (upper column cap 2 and lower column cap 4) respectively arranged at the two ends of the column body; the upper column cap 2 and the lower column cap 4 respectively An inlet and an outlet are provided; the inlet and the outlet are respectively connected with an inlet pipeline 3 and an outlet pipeline 5;

[0033] The cylinder 1 is used to contain the compacted solid phase packing layer 6 .

[0034] In this embodiment, the cylinder 1 has a length of 300 mm, an inner diameter of 25 mm, and an outer diameter of 30 mm.

[...

Embodiment 2

[0045] This embodiment provides a method for separating sulfonium salts from petroleum substrates, wherein the method is realized by using a solid-phase chromatographic column for separating sulfonium salts from petroleum substrates. The structural representation of the solid-phase chromatographic column is as follows figure 1 shown, from figure 1 As can be seen from the figure, the solid-phase chromatographic column includes a column body 1 and two column caps (upper column cap 2 and lower column cap 4) respectively arranged at the two ends of the column body; the upper column cap 2 and the lower column cap 4 respectively An inlet and an outlet are provided; the inlet and the outlet are respectively connected with an inlet pipeline 3 and an outlet pipeline 5;

[0046] The cylinder 1 is used to contain the compacted solid phase packing layer 6 .

[0047] In this embodiment, the cylinder 1 has a length of 300 mm, an inner diameter of 25 mm, and an outer diameter of 30 mm.

[...

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Abstract

The invention provides a method for separating sulfonium salts from petroleum matrix, wherein the method comprises: (1) putting inorganic salt powder into methylated petroleum to obtain a solid-liquid mixture; Solvent, obtain the inorganic salt powder that is attached with the petroleum that has been methylated; (2) fill the inorganic salt powder that this is attached with the petroleum that has been methylated into the solid-phase chromatographic column and compact; (3) from the solid-phase chromatographic Continuously add n-hexane and acetonitrile at the inlet of the column for elution, collect the eluate, and remove the acetonitrile in the eluate to obtain a solid sulfonium salt. The method for separating the sulfonium salt from the petroleum matrix provided by the invention is simple to operate, can effectively and completely separate the sulfonium salt from the petroleum matrix, and has high separation efficiency.

Description

technical field [0001] The invention relates to a method for separating sulfonium salts from petroleum matrix, belonging to the technical field of petroleum exploitation. Background technique [0002] When separating sulfur-containing compounds in petroleum, it is necessary to convert the sulfur-containing compounds into sulfonium salts through methylation. After separating the sulfonium salts from the petroleum matrix, the separated sulfur-containing compounds can be obtained through demethylation. Therefore, the separation of sulfonium salts from petroleum matrix is ​​one of the key steps. Chinese patent CN103756719A provides a method for separating sulfonium salts by precipitation, which mainly includes: dissolving petroleum components in ethanol, methylene chloride or ethylene dichloride, and then adding an alkylating agent for alkylation reaction , to filter; the filtrate is mixed with a C5-C7 alkane solvent, then the precipitate is separated, and the precipitate is ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C381/12
CPCC07C381/12
Inventor 王萌朱光有池林贤张志遥陈志勇李婷婷杨海军韩剑发孙崇浩
Owner PETROCHINA CO LTD
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