Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for separating sulfonium salt 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, incomplete precipitation, etc., and achieve the effects of simple operation, avoiding incomplete precipitation, and good repeatability

Active Publication Date: 2019-10-22
PETROCHINA CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for separating sulfonium salt from petroleum matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a method for separating sulfonium salt from a petroleum matrix, wherein the method is implemented using a solid phase chromatographic column for separating sulfonium salt from a petroleum matrix. The structure diagram of the solid phase chromatographic column is as figure 1 Shown from figure 1 It can be seen that the solid phase chromatography column includes a column body 1 and two column caps (upper column cap 2 and lower column cap 4) respectively arranged at both ends of the column; the upper column cap 2 and the lower column cap 4 are respectively An inlet and an outlet are provided; the inlet and outlet are respectively connected with an inlet pipe 3 and an outlet pipe 5;

[0033] The column 1 is used to contain the solid phase packing layer 6 after compaction.

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

[0035] In this embodiment, the solid filler layer 6 i...

Embodiment 2

[0045] This embodiment provides a method for separating sulfonium salt from petroleum matrix, wherein the method is realized by using a solid phase chromatographic column for separating sulfonium salt from petroleum matrix. The structure diagram of the solid phase chromatographic column is as follows: figure 1 Shown from figure 1 It can be seen that the solid phase chromatography column includes a column body 1 and two column caps (upper column cap 2 and lower column cap 4) respectively arranged at both ends of the column; the upper column cap 2 and the lower column cap 4 are respectively An inlet and an outlet are provided; the inlet and outlet are respectively connected with an inlet pipe 3 and an outlet pipe 5;

[0046] The column 1 is used to contain the solid phase packing layer 6 after compaction.

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

[0048] In this embodiment, the solid filler laye...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Outer diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides a method for separating a sulfonium salt from a petroleum matrix. The method comprises: (1) pouring inorganic salt powder into methylated petroleum to obtain a solid-liquid mixture, and removing the solvent from the solid-liquid mixture to obtain inorganic salt powder attached with the methylated petroleum; (2) filling a solid phase chromatography column with the inorganic salt powder attached with the methylated petroleum, and compacting; and (3) carrying out elution by sequentially and continuously adding n-hexane and acetonitrile from the inlet of the solid phase chromatography column, collecting the eluent, and removing the acetonitrile from the eluent to obtain a solid sulfonium salt. According to the present invention, the method has characteristics ofsimple operation and high separation efficiency, and can effectively and completely separate the sulfonium salt and the petroleum matrix.

Description

Technical field [0001] The invention relates to a method for separating sulfonium salts from petroleum substrates, and belongs to the technical field of petroleum exploitation. Background technique [0002] When separating sulfur-containing compounds in petroleum, it is necessary to convert sulfur-containing compounds into sulfonium salts through methylation. After the sulfonium salts are separated from the petroleum matrix, the separated sulfur-containing compounds can be obtained by demethylation. Therefore, separating the sulfonium salt from the petroleum matrix is ​​one of the key steps. Chinese patent CN103756719A provides a method for separating sulfonium salt by precipitation method, which mainly includes: dissolving petroleum components in ethanol, dichloromethane or dichloroethane, and then adding alkylating reagent to carry out alkylation reaction , Perform filtration; mix the filtrate with a C5-C7 alkane solvent, then perform precipitation separation, and take the pre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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