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A kind of alkyl glycoside sulfonate surfactant and its preparation method and application

A surfactant, glycoside sulfonate technology, applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve problems such as poor resistance to hard water, and achieve improved yield, high yield, water solubility The effect of increased sex and salt tolerance

Active Publication Date: 2019-11-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems, the object of the present invention is to provide a kind of alkyl glucoside sulfonate surfactant, this surfactant can overcome the problems such as alkyl glucoside water-solubility, anti-hard water ability are poor, especially high salinity Good foam stability under concentrated divalent salt and acidic conditions

Method used

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  • A kind of alkyl glycoside sulfonate surfactant and its preparation method and application
  • A kind of alkyl glycoside sulfonate surfactant and its preparation method and application
  • A kind of alkyl glycoside sulfonate surfactant and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of alkyl glucoside sulfonate surfactant, it comprises the following steps:

[0036] Dissolve 16g (0.05mol) of decyl glucoside in a mixed solvent of 4mL of water and 25mL of isopropanol, add 2.8g (0.07mol) of sodium hydroxide at 50°C, and after basifying for 1 hour, add 13.76g of 3 -Sodium chloro-2-hydroxypropanesulfonate was reacted at a constant temperature of 70° C. for 5 hours to obtain sodium decyl glucoside sulfonate. The obtained product was separated and purified, and the calculated yield was 40.8%.

[0037] Structural analysis is carried out to the product obtained, from ESI-MS spectrogram ( figure 1 ), it can be seen that the 457.3m / z peak is the ion peak (M-H + ); from the infrared spectrum ( figure 2 ) can be seen in 3385cm -1 The nearby peak is the O-H stretching vibration peak, 2934.8cm -1 for -CH 3 The stretching vibration peak of , 1474.5cm -1 for -CH 3 The bending vibration peak of , 26...

Embodiment 2

[0039] The present embodiment provides a kind of preparation method of alkyl glucoside sulfonate surfactant, it comprises the following steps:

[0040] With reference to the method described in Example 1, 16g (0.05mol) of n-hexyl glucoside was dissolved in a mixed solvent of 25mL of isopropanol and 4mL of water, and 2.8g (0.07mol) of sodium hydroxide was added at 50°C to alkalize After 1 hour, 13.76g of sodium 3-chloro-2-hydroxypropanesulfonate was added and reacted at a constant temperature at 70°C for 5 hours to obtain sodium n-hexylglucosidesulfonate. The resulting product was separated and purified, and the calculated yield was 45.3%. .

Embodiment 3

[0042]The present embodiment provides a kind of preparation method of alkyl glucoside sulfonate surfactant, it comprises the following steps:

[0043] With reference to the method described in Example 1, 16g (0.05mol) of isooctyl glucoside was dissolved in a mixed solvent of 25mL of isopropanol and 4mL of water, and 2.8g (0.07mol) of sodium hydroxide was added at 50°C. After 1 hour, add 13.76g of 3-chloro-2-hydroxypropanesulfonate sodium, and react at a constant temperature at 70°C for 5 hours to obtain sodium isooctyl glucoside sulfonate. The resulting product is separated and purified, and the yield is calculated as 42.7%.

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Abstract

The invention provides an alkyl polyglucoside sulfonate surfactant, a preparation method therefor and application of the alkyl polyglucoside sulfonate surfactant. The alkyl polyglucoside sulfonate surfactant has a structural formula represented by a formula I shown in the description, wherein R is straight-chain or branched-chain alkyl, n is 1 to 2, and M is Na or K. The preparation method for the alkyl polyglucoside sulfonate comprises the steps: putting alkyl glucoside into a mixed solvent containing water and alcohol, and then, adding an alkaline substance into the mixed solvent for alkalization reaction so as to obtain an intermediate system; and adding sodium 3-chloro-2-hydroxypropyl sulfonate or potassium 3-chloro-2-hydroxypropyl sulfonate into the intermediate system for etherification reaction, thereby obtaining the alkyl polyglucoside sulfonate surfactant. The alkyl polyglucoside sulfonate can be applied to a carbon dioxide foam flooding system. The alkyl polyglucoside sulfonate provided by the invention can overcome the problems of poor water solubility, poor hard water resistance and the like of alkyl glucoside and has good foam stability under the condition of hypersalinity, particularly under the conditions of high-concentration divalent salts and acidity.

Description

technical field [0001] The present invention relates to a method for CO 2 The invention relates to a surfactant alkyl glucoside sulfonate in a foam flooding system, which belongs to the field of tertiary oil recovery. Background technique [0002] The difference between carbon dioxide foam flooding and air and nitrogen foam flooding is that carbon dioxide foam flooding can form miscible flooding, expand crude oil, and reduce the viscosity and density of crude oil. This is mainly because the solubility of carbon dioxide in crude oil and water is much greater than that of air and nitrogen. The dissolved solution is acidic; at present, domestic and foreign 2 The research on foam formulation system is mainly aimed at the screening of existing foaming surfactants; under high salinity, especially high concentration of divalent salts and acidic conditions, the foam stability of surfactants is not satisfactory. [0003] Alkyl glycoside (APG) is a mixed product obtained by losing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/04C07H1/00C09K8/594C09K8/584
CPCC07H1/00C07H15/04C09K8/584C09K8/594
Inventor 罗文利邹新源周新宇田茂章
Owner PETROCHINA CO LTD