A kind of separation method of active component in petroleum sulfonate

A technology for petroleum sulfonates and active components, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., and can solve the problems of difficult separation and characterization, complex composition and structure, etc.

Active Publication Date: 2021-08-24
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The composition and structure of petroleum sulfonate is very complex. Previous studies have shown that petroleum sulfonate samples contain hundreds of compounds, most of which are homologues and isomers, which are very difficult to separate and characterize
At present, there are no analytical methods and research literatures that can quickly and comprehensively separate and characterize the quality and structural information of petroleum sulfonate, and there is no related research on the screening and separation of active components with excellent performance in petroleum sulfonate samples. research report

Method used

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  • A kind of separation method of active component in petroleum sulfonate
  • A kind of separation method of active component in petroleum sulfonate
  • A kind of separation method of active component in petroleum sulfonate

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Embodiment Construction

[0017] A method for separating active components in petroleum sulfonate according to the present invention will be described below through specific examples.

[0018] Instruments used: mass spectrometer, Agilent 1100 MSD, the United States; interfacial tensiometer, Beijing Shengwei Jiye Technology Co., Ltd. TX-500, China.

[0019] Reagents: methanol, chromatographically pure, Beijing Merida Technology Co., Ltd.; sodium chloride, analytically pure, Tianjin Baishi Chemical Co., Ltd.; petroleum sulfonate samples, crude oil for experiments, Qizhong District, Xinjiang Oilfield.

[0020] (1) Chromatographic column preparation: The chromatographic column is packed by wet method, and the filler is C 18 Bonded porous silica gel; the column specification is 2.54 cm in inner diameter and 30 cm in length;

[0021] (2) Chromatographic separation: using methanol and water as the mobile phase, gradient elution, 0-20 min, 50% methanol, 20-30 min, 70% methanol, 30-40 min, 90% methanol, 40-52 ...

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Abstract

The invention discloses a method for separating active components in petroleum sulfonate, which adopts chromatographic technology to cut petroleum sulfonate samples in sections according to time periods in a gradient elution manner, and divides them into 24 groups According to the results of mass spectrometry, the components with relatively similar structural composition were combined, and finally 14 components with different structures were obtained. The interface activity and emulsification properties of these components were tested respectively, and the components with better interface activity and emulsification properties in the petroleum sulfonate samples were screened and accurately separated to provide accurate preparation for the production of petroleum sulfonate samples with excellent performance Raw material selection guide.

Description

technical field [0001] The invention relates to a method for separating active components in petroleum sulfonate, in particular to a method for separating components with optimal interfacial activity and emulsifying properties in petroleum sulfonate samples, which belongs to the oil field chemical flooding enhanced oil recovery technology Field Surfactant analysis and evaluation technology. Background technique [0002] Petroleum sulfonate is the most widely used anionic surfactant in oilfield chemical flooding. The structure and composition of petroleum sulfonate are complex, and there are large differences in reaction raw materials and reaction processes, resulting in large differences in physical and chemical properties and performance among petroleum sulfonate samples produced by different sources and manufacturers, including average molecular weight, molecular weight distribution range, structure type, interface activity, emulsifying properties, etc. In practical appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/44C07C309/62
CPCC07C303/44C07C309/62
Inventor 王帅郭勇梁晓静王立成王磊
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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