Fatty amine polyoxyethylene ether diethyl disulfonate surfactant and preparation method thereof

A technology of aliphatic amine polyoxyethylene ether and surfactant, which is applied in the direction of sulfonate preparation, chemical instruments and methods, and drilling compositions, etc., and can solve problems such as high equipment requirements, harsh synthesis conditions, and strong corrosion , to achieve the effect of reducing the interfacial tension of oil and water, easy biodegradation, and good surface activity

Active Publication Date: 2014-12-10
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are generally some problems in the preparation method, such as harsh synthesis conditions, high equipment requireme

Method used

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  • Fatty amine polyoxyethylene ether diethyl disulfonate surfactant and preparation method thereof
  • Fatty amine polyoxyethylene ether diethyl disulfonate surfactant and preparation method thereof
  • Fatty amine polyoxyethylene ether diethyl disulfonate surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Preparation of Laurylamine Polyoxyethylene Ether (2) Sodium Diethylbissulfonate

[0031] Add 5.4 g of laurylamine polyoxyethylene ether (2) and 2.4 g of solid sodium hydroxide into a three-necked flask, pass nitrogen to deoxygenate and dehydrate, stir and react at 100°C for 0.5 hours, cool down to room temperature, and then add 20 mL of toluene as a solvent, Add 10.9 g of sodium chloroethylsulfonate, raise the temperature to 85°C and react for 8 hours to obtain a crude product, remove the toluene by rotary evaporation, add hot absolute ethanol to dissolve the product, remove excess alkali, sodium chloroethylsulfonate and the generated product by suction filtration sodium chloride, the filtrate was concentrated, recrystallized with absolute ethanol, and the obtained solid was dried to obtain the target product in the form of white powder with a yield of 66%.

[0032] The final product obtained in this embodiment has an equilibrium interfacial tension between th...

Embodiment 2

[0033] Example 2 Preparation of Sodium Laurylamine Polyoxyethylene Ether (5) Diethylbissulfonate

[0034] Add 8.7 g of laurylamine polyoxyethylene ether (5) and 3.0 g of solid potassium hydroxide into a three-necked flask, pass nitrogen to deoxygenate and dehydrate, stir and react at 100°C for 1.5 hours, cool down to room temperature, and then add 20 mL of toluene as a solvent, Add 9.9 g of sodium chloroethylsulfonate, raise the temperature to 95°C and react for 10 hours to obtain a crude product, remove the toluene by rotary evaporation, add hot absolute ethanol to dissolve the product, remove excess alkali, sodium chloroethylsulfonate and the generated product by suction filtration sodium chloride, the filtrate was concentrated, recrystallized with absolute ethanol, and the obtained solid was dried to obtain the target product in white powder form with a yield of 75%.

[0035] The final product obtained in this embodiment has an equilibrium interfacial tension between the de...

Embodiment 3

[0036] Example 3 Preparation of stearylamine polyoxyethylene ether (2) sodium diethylbissulfonate

[0037] Add 9.6g of stearylamine polyoxyethylene ether (2) and 2.7g of solid sodium hydroxide into a three-necked flask, pass nitrogen to remove oxygen and dehydrate, stir and react at 100°C for 1 hour, cool down to room temperature, and then add 20mL of toluene as solvent , add 12.4 g of sodium chloroethylsulfonate, heat up to 95°C and react for 12 hours to obtain a crude product, remove toluene by rotary evaporation, add hot absolute ethanol to dissolve the product, remove excess alkali and sodium chloroethylsulfonate and form sodium chloride, the filtrate was concentrated, recrystallized with absolute ethanol, and the obtained solid was dried to obtain the white powdery target product with a yield of 71%.

[0038] The interfacial tension between the final product obtained in this example and the dehydrated and degassed crude oil in a block in the tower within the range of 0.05...

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Abstract

The invention relates to a fatty amine polyoxyethylene ether diethyl disulfonate surfactant and a preparation method thereof. The surfactant has the structure shown in the formula (I) (which is as shown in the description), wherein M refers to alkali metal ions, R refers to C12-C18 alkyl radical, m and n refer to adduct numbers of ethoxy groups, and the sum of m and n ranges from 2 to 10. According to the surfactant, oil-water interfacial tension can be reduced to be ultra-low under the conditions of high temperature, high salinity and high content of divalent metal ions, and with the excellent performance, the surfactant can be used for displacement of oil of a harsh reservoir under high temperature, high salinity and high hardness. The synthetic method is simple, short in technical process and mild in reaction conditions, and is suitable for scale production.

Description

technical field [0001] The invention relates to a fatty amine polyoxyethylene ether diethyl disulphonate surfactant and a preparation method thereof, belonging to the field of organic synthesis. Background technique [0002] Research on surfactants for oil displacement shows that sulfonate nonionic-anionic surfactants have two types of hydrophilic groups with different properties, nonionic and anionic, which make them both nonionic and anionic. The advantages of anionic surfactants are good temperature resistance, salt resistance, calcium and magnesium ion resistance, good compatibility with reservoir conditions, and the terminal sulfonic acid group (—C—SO 3 The sulfur atom in -) is directly linked to carbon, and because of the hydrolytic stability of the -C—S— bond, it has better chemical stability and can be widely used in chemical flooding of high-temperature and high-salt reservoirs. [0003] At present, the raw materials for the synthesis of sulfonate-type nonionic-ani...

Claims

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Application Information

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IPC IPC(8): B01F17/04B01F17/46C07C303/32C07C309/10C09K8/584C09K23/04C09K23/46
Inventor 由庆戴彩丽赵健慧赵明伟赵光杨帅严志虎方吉超丁琴芳王凯刘逸飞范洪富崔亚赵福麟
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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