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Method for synthesizing cetyl diphenyl ether sodium disulfonate and use

A technology of cetyl diphenyl ether and sodium disulfonate, which is applied in the direction of sulfonate preparation, drilling compositions, chemical instruments and methods, etc., can solve the problems of poor biodegradability, low content of active substances, no Resistance to hard water and other issues, to achieve the effect of good product quality, high content of active substances, and excellent resistance to hard water

Inactive Publication Date: 2009-08-12
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the problems of poor biodegradability, high cost, and low content of active substances in the existing production methods of the background technology and the problem that the component petroleum sulfonate of the existing oil displacement agent is not resistant to hard water, and provides a A synthetic method and application of sodium cetyl diphenyl ether disulfonate, the product of the synthetic method has the characteristics of high product degradation ability, high active matter content, low price, etc., and its components used as oil displacement agents can resist salt, hard water

Method used

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  • Method for synthesizing cetyl diphenyl ether sodium disulfonate and use
  • Method for synthesizing cetyl diphenyl ether sodium disulfonate and use
  • Method for synthesizing cetyl diphenyl ether sodium disulfonate and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add diphenyl ether into a dry three-necked flask, add AlCl 3 Catalyst, heat and stir to dissolve it, and raise the temperature to 90°C; put hexadecene into a constant pressure dropping funnel, in which diphenyl ether: AlCl 3 : The molar ratio of hexadecene is 16:1.14:11.4, and it is added dropwise into the reaction flask within 0.5h, stirred, and the temperature is controlled. Constant temperature reaction 6.0h.

[0016] After the reaction was completed, an equal volume of deionized water, saturated Na 2 CO 3 solution, washed with deionized water, separated, discarded the aqueous layer, and washed with anhydrous Na 2 SO 4 The oil layer was dried, filtered, and distilled under reduced pressure at 400 Pa, so that all the raw materials were evaporated, and the product obtained by continuing distillation was the target product hexadecyl diphenyl ether, and the molar conversion rate was 51.8%.

[0017] Add cetyl diphenyl ether and 20ml of petroleum ether into a three-ne...

Embodiment 2

[0019] Add diphenyl ether into a dry three-necked flask, add AlCl 3 Catalyst, heat and stir to dissolve it, and raise the temperature to 90°C; put hexadecene into a constant pressure dropping funnel, in which diphenyl ether: AlCl 3 : The molar ratio of hexadecene is 16:2:10, and it is added dropwise into the reaction flask within 0.5h, stirred, and the temperature is controlled. Constant temperature reaction 6.0h.

[0020] After the reaction was completed, an equal volume of deionized water, saturated Na 2 CO 3 solution, washed with deionized water, separated, discarded the aqueous layer, and washed with anhydrous Na 2 SO 4 The oil layer was dried, filtered, and distilled under reduced pressure at 400 Pa until all the raw materials were evaporated, and the product obtained by continuing distillation was the target product hexadecyl diphenyl ether, and the molar conversion rate was 60.9%.

[0021] The molar ratio of hexadecyl diphenyl ether: oleum (50%) in Example 1 was ch...

Embodiment 3

[0023] Add diphenyl ether into a dry three-necked flask, add AlCl 3 Catalyst, heat and stir to dissolve it, and raise the temperature to 90°C; put hexadecene into a constant pressure dropping funnel, in which diphenyl ether: AlCl 3 : The molar ratio of hexadecene is 16:2.82:9.4, and it is added dropwise into the reaction flask within 0.5h, stirred, and the temperature is controlled. Constant temperature reaction 6.0h.

[0024] After the reaction was completed, an equal volume of deionized water, saturated Na 2 CO 3 solution, washed with deionized water, separated, discarded the aqueous layer, and washed with anhydrous Na 2 SO 4 The oil layer was dried, filtered, and distilled under reduced pressure at 400 Pa until all the raw materials were evaporated, and the product obtained by continuing distillation was the target product hexadecyl diphenyl ether, and the molar conversion rate was 60.7%.

[0025] The molar ratio of hexadecyl diphenyl ether: fuming sulfuric acid (50%) ...

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Abstract

The invention relates to a synthesizing method and usage of hexadecyl diphenyl ether sodium disulfonate, mainly solving the problems that existing production methods lead to bad degradation capability, high cost and low active matter content and that petroleum sulfonate which is a component of existing oil-displacing agents is not durable in hard water. The invention is characterized in that, in the synthesizing method of the hexadecyl diphenyl ether sodium disulfonate, high-purity cetene and diphenyl ether which are produced through the ethylene oligomerization process undergo alkylation to generate hexadecyl diphenyl ether and then undergo sulfonation to generate hexadecyl diphenyl ether disulfonic acid, and finally neutralization is carried out to obtain the hexadecyl diphenyl ether sodium disulfonate. The hexadecyl diphenyl ether sodium disulfonate is used as a surface active agent of the oil-displacing agent for tertiary oil extraction. The surface active agent can be compounded to form an oil-displacing surface active agent system, and stable ultralow interfacial tension can be formed on the oil-water interface.

Description

Technical field: [0001] The present invention relates to a kind of surface active agent used for oil field flooding, especially a kind of synthetic method of cetyl diphenyl ether disulfonate sodium surfactant, and cetyl diphenyl ether disulfonate sodium surface active agent application of additives in tertiary oil recovery. Background technique: [0002] At present, the surfactant components in the three-component composite oil displacement agent used in the tertiary oil recovery of my country's oilfields are mainly imported petroleum sulfonates. Petroleum sulfonate, as a component of oil displacement agent, has an inherent shortcoming - it is not resistant to hard water, and the tertiary oil recovery is precisely the production fluid is an "oil-in-water emulsion". If the surfactant is not resistant to hard water, it will not A relatively satisfactory emulsion may be formed, and the oil in the rock fracture is difficult to be washed down, resulting in a low recovery rate. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/42C07C303/32C09K8/584
Inventor 于克利赵贤俊杨希志李君胡刚杨明庆帅虎张大伟王俊峰窦云芹邓从刚朱英敏兰荣华
Owner DAQING OILFIELD CO LTD
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