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Bio-based internal olefin sulfonate surfactant and preparation method thereof

A technology of internal olefin sulfonate and surfactant, which is applied in the field of bio-based internal olefin sulfonate surfactant and its preparation, can solve the problems of high cost and restrictions on the popularization of composite flooding technology, and achieve low production cost and improved Effect of oil recovery and cost reduction

Inactive Publication Date: 2012-06-27
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide a kind of bio-based internal olefin sulfonate surfactant, which is used to solve the problem that the cost of existing surfactant is relatively high so that the popularization of composite flooding technology in oilfield production is restricted. Another object is to provide the preparation method of this bio-based internal olefin sulfonate surfactant

Method used

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  • Bio-based internal olefin sulfonate surfactant and preparation method thereof
  • Bio-based internal olefin sulfonate surfactant and preparation method thereof
  • Bio-based internal olefin sulfonate surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] In a three-necked flask equipped with an electric stirrer, a reflux condenser and a thermometer, add 56.5g of oleic acid and 51.2g of anhydrous methanol, add 1.0g of concentrated sulfuric acid into the three-necked flask, and heat to 100°C for 2 hours under stirring. After the reaction was completed, the product was washed with water to pH=7, dried with anhydrous sodium sulfate, and excess methanol was distilled off under reduced pressure to obtain methyl oleate as a light yellow oily transparent liquid.

[0039] Refined 3.9g tungsten hexachloride (WCl 6 ) into a three-necked flask, filled with nitrogen, and added 200ml of dry benzene; at a temperature of 28°C, slowly added 1.9g of tetramethyltin (SnMe 4 ), after stirring for 10 minutes, dissolve 44.4g of methyl oleate in 80ml of benzene and add it into the three-necked flask, continue stirring for 10 minutes, raise the temperature to 70°C, and react for 20 hours. After the reaction is over, add 100ml of sodium hydroxi...

Embodiment 2

[0047] In a three-necked flask equipped with an electric stirrer, a reflux condenser and a thermometer, add 56.5g of oleic acid and 73.6g of absolute ethanol, add 1.0g of concentrated sulfuric acid into the three-necked flask, and heat to 110°C for 2 hours under stirring , After the reaction was completed, the product was washed with water to pH = 7, dried with anhydrous sodium sulfate, and excess methanol was distilled off under reduced pressure to obtain ethyl oleate as a light yellow oily transparent liquid.

[0048] Refined 3.9g tungsten hexachloride (WCl 6 ) into a three-necked flask, filled with nitrogen, and added 200ml of dry benzene; at a temperature of 28°C, slowly added 1.9g of tetramethyltin (SnMe 4 ), after stirring for 10 minutes, dissolve 46.5g of ethyl oleate in 80ml of benzene and add it into the three-necked flask, continue stirring for 10 minutes, raise the temperature to 70°C, and react for 20 hours. After the reaction is over, add 100ml of sodium hydroxid...

Embodiment 3

[0056] In a three-necked flask equipped with an electric stirrer, a reflux condenser and a thermometer, add 56.5g of oleic acid and 51.2g of anhydrous methanol, add 1.0g of concentrated sulfuric acid into the three-necked flask, and heat to 100°C for 2 hours under stirring. After the reaction was completed, the product was washed with water to pH=7, dried with anhydrous sodium sulfate, and excess methanol was distilled off under reduced pressure to obtain methyl oleate as a light yellow oily transparent liquid.

[0057] Refined 2g tungsten hexachloride (WCl 6 ) into a three-necked flask, filled with nitrogen, and added 150ml of dry benzene; at a temperature of 20°C, slowly added 1.0g of tetramethyltin (SnMe 4 ), after stirring for 20 minutes, dissolve 40g of methyl oleate in 50ml of benzene and add it into the three-necked flask, continue to stir for 20 minutes, raise the temperature to 80°C, and react for 10 hours. After the reaction, add 80ml of sodium hydroxide solution wi...

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Abstract

The invention relates to a bio-based internal olefin sulfonate surfactant and a preparation method thereof, and belongs to a surfactant applied to a composite oil displacement system in oilfield production. The bio-based internal olefin sulfonate surfactant consists of the following materials in percentage by weight: 85-90 percent of alkenyl sulphonate and 10-15 percent of hydroxyl alkane sulfonate. The bio-based internal olefin sulfonate surfactant can substitute alkylbenzene sulfonate, is not limited to raw materials and can be subjected to expanded production; the market source of the surfactant in the current tertiary oil recovery process is expanded; and crude oil recovery ratio can be increased.

Description

1. Technical field: [0001] The invention relates to a surfactant used in a composite oil displacement system in oilfield production, in particular to a bio-based internal olefin sulfonate surfactant and a preparation method thereof. 2. Background technology: [0002] Surfactants are widely used in the field of chemical enhanced oil recovery because they can greatly reduce the interfacial tension of oil and water. ASP flooding is a tertiary oil recovery method that can effectively enhance oil recovery. However, due to the high cost of various chemical agents used in composite flooding, especially surfactants, the promotion of this technology in oilfield production has been greatly restricted. Therefore, in order to make this technology widely used in oilfield production, it is necessary to develop high-efficiency and cheap surfactants that can be used in composite flooding systems to reduce the cost of composite flooding and improve economic benefits. [0003] As early as t...

Claims

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Application Information

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IPC IPC(8): B01F17/00B01F17/02C09K8/584C09K23/00C09K23/02
Inventor 丁伟于涛栾和鑫刘康闫磊曲广淼
Owner NORTHEAST GASOLINEEUM UNIV
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