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Fatty acid mixture amide propyl betaine and preparation method thereof

A technology of fatty acid amidopropyl betaine and fatty acid amidopropyl tertiary amine, which is applied in the field of mixed fatty acid amidopropyl betaine and its preparation, can solve problems affecting application and poor solubility, and achieve diverse production raw materials, reduced production costs, The effect of improving versatility

Active Publication Date: 2014-01-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the difficulties in alkali-free binary compound flooding technology is the development of high-efficiency surfactants: under alkali-free conditions, they can achieve ultra-low interfacial tension (10 -3 mN / m order of magnitude and below) puts forward very high requirements for active agents, and traditional heavy alkylbenzene sulfonate and petroleum sulfonate products basically cannot meet the needs
[0005] The amphoteric surfactant represented by sulfobetaine is a kind of surfactant agent with good performance for alkali-free binary composite flooding that has emerged in recent years. It has good interface performance, qualified adsorption, temperature resistance and salt resistance and High oil displacement efficiency; however, long-chain sultaine has a high Krafft point (Krafft point), and its solubility in low-salinity reservoirs is poor, which affects its application

Method used

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  • Fatty acid mixture amide propyl betaine and preparation method thereof
  • Fatty acid mixture amide propyl betaine and preparation method thereof
  • Fatty acid mixture amide propyl betaine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 rapeseed oil fatty acid amidopropyl carboxyethyl betaine

[0049] This embodiment provides a kind of rapeseed oil fatty acid amidopropyl carboxyethyl betaine, which is synthesized through the following steps:

[0050] (1) Amidation reaction: Rapeseed oil and N,N-dimethyl-1,3-propanediamine are used as reaction raw materials (the ratio of substances is 1 / 3.6), and 1wt% catalyst sodium methoxide or hydrogen is added Potassium oxide, reacted at 160°C for 8 hours to obtain the intermediate of rapeseed oil fatty acid amidopropyl tertiary amine and separate the by-product glycerin;

[0051] (2) Quaternization reaction: Rapeseed oil was obtained by reacting rapeseed oil fatty acid amide and sodium chloroacetate (mass ratio: 1 / 1.05) in a mixed solvent (isopropanol / water) at 80°C for 12 hours Fatty acid amidopropyl carboxyethyl betaine.

[0052] The mass spectrum of the intermediate rapeseed oil fatty acid amidopropyl tertiary amine and the product rapeseed oil fa...

Embodiment 2

[0054] Embodiment 2 rapeseed oil fatty acid amide propyl hydroxypropyl sultaine

[0055] This embodiment provides a kind of rapeseed oil fatty acid amide propyl hydroxypropyl sultaine, which is synthesized by the following steps:

[0056] (1) Amidation reaction: using rapeseed oil fatty acid and N,N-dimethyl-1,3-propanediamine as the reaction raw materials (the molar ratio of the substances is 1 / 1.2), react at 170°C for 10h to obtain vegetable Seed oil fatty acid amidopropyl tertiary amine intermediate;

[0057] (2) Quaternization reaction: Rapeseed oil fatty acid amide and sodium 3-chloro-2-hydroxypropanesulfonate (ratio of substance is 1 / 1.05) under the action of mixed solvent (isopropanol / water) at 80 ℃ for 12 hours to obtain rapeseed oil fatty acid amide hydroxypropyl sultaine.

[0058] The mass spectrum of the product rapeseed oil fatty acid amidopropyl carboxypropyl sultaine is shown in image 3 .

[0059] Depend on image 3 It can be seen that oleic acid amidopropy...

Embodiment 3

[0060] Embodiment 3 soybean oil fatty acid amidopropyl ethyl sulfobetaine

[0061] This embodiment provides a kind of soybean oil fatty acid amidopropyl ethyl sulfobetaine, which is synthesized through the following steps:

[0062] (1) Amidation reaction: using soybean oil fatty acid methyl ester and N,N-dimethyl-1,3-propanediamine as reaction raw materials (mass ratio: 1 / 1.2), reacting at 155°C for 10 hours to obtain Soybean oil fatty acid amidopropyl tertiary amine intermediate;

[0063] (2) Quaternization reaction: react soybean oil fatty acid amide with sodium 2-ethanesulfonate (mass ratio: 1 / 1.05) in a mixed solvent (isopropanol / water) at 80°C for 12 hours to obtain soybean oil Fatty acid amidopropyl ethyl sultaine.

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Abstract

The invention relates to a fatty acid mixture amide propyl betaine and a preparation method thereof. The structure of the fatty acid mixture amide propyl betaine is presented as (I). The fatty acid mixture amide propyl betaine is prepared with natural oil or derivatives of the natural oil, such as fatty acid methyl ester, fatty acid mixture and the like; and compared with single-carbon-chain fatty acid amide propyl betaine, the fatty acid mixture amide propyl betaine has the advantages that the production cost can be reduced remarkably, and the oil-water interface performance is excellent when the fatty acid mixture amide propyl betaine is applied to chemical compound flooding composition formula systems.

Description

technical field [0001] The invention relates to a mixed fatty acid amidopropyl betaine and a preparation method thereof, belonging to the technical field of petroleum exploitation. Background technique [0002] With the continuous development of oilfields, China's main onshore oilfields have entered a stage of high recovery and high water cut. While the output of crude oil is decreasing, the demand for crude oil is increasing day by day due to domestic economic development. Stabilizing and increasing production in mature oilfields has become an important issue for oilfield development workers. [0003] The results of CNPC's second tertiary oil recovery potential evaluation show that chemical flooding is the main enhanced oil recovery technology adapting to the reservoir conditions in my country. The development, popularization and application of enhanced oil recovery technologies represented by polymer flooding and ASP flooding have made important contributions to the stab...

Claims

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Application Information

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IPC IPC(8): C07C233/36C07C233/38C07C231/12C07C309/14C07C303/32C09K8/584
Inventor 蔡红岩王红庄马德胜
Owner PETROCHINA CO LTD
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