Surface active agent, and its preparing method and use

A technology for surfactants and uses, applied in the field of surfactants and their preparation, can solve problems such as human hazards, stratum and surface pollution, and difficult biodegradability, and achieve easy degradation, enhanced oil recovery, and reduced interface tension effect

Inactive Publication Date: 2004-01-28
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in tertiary oil recovery, the commonly used surfactants are petroleum sulfonates, alkylbenzene sulfonates or other surfactants containing benzene rings. Although these surfactants have the advantages of wide sources and large quantities, they are It is not easy to be biodegraded, has certain pollution to the formation and the surface, and is also harmful to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 (1). The synthesis of Jubet alcohol polyoxyethylene ether:

[0032] Add Gubet alcohol and powdery potassium hydroxide to form reaction system in the reactor that condensing unit, stirring device and gas disperser are housed, contain the Gubet alcohol of 0.45 mole and the potassium hydroxide of 0.32 gram powder in the system, Heat to 156°C. Blow the entire reaction system with pure nitrogen for 13 minutes to remove the air in the system, then slowly pass ethylene oxide through the safety device, and enter the Gubet dodecyl alcohol-potassium hydroxide solution in the reactor through the gas disperser In the process, the addition reaction of ethylene oxide and Jubet dodecyl alcohol (absorbing ethylene oxide), the speed of adding ethylene oxide is controlled so that the ethylene oxide gas can be completely absorbed by Jubet dodecyl alcohol prevail. After the reaction is complete (it usually takes about 8 hours for ethylene oxide to be completely absorbed), bl...

Embodiment 2

[0038] Embodiment 2 (1). The synthesis of Jubet alcohol polyoxyethylene ether:

[0039]Add Gubet alcohol and powdery potassium hydroxide to form reaction system in the reactor that condensing unit, stirring device and gas disperser are housed, contain the Gubet alcohol of 0.467 moles and the potassium hydroxide of 0.3 gram powdery in the system, Heat to 155°C and keep the temperature constant at 155±2°C. Blow the entire reaction system with pure nitrogen for 15 minutes to remove the air in the system, and then slowly pass ethylene oxide through the safety device, and then add it to the Gubet tetradecyl alcohol-potassium hydroxide in the reactor through a gas disperser. In the solution, carry out the addition reaction (absorbing oxyethane) of oxyethane and Jubet tetradecyl alcohol, the speed of adding oxyethane is controlled in oxyethane gas and can pass through Jubet tetradecyl alcohol completely Absorption prevails. After the reaction is complete (it usually takes about 6 h...

Embodiment 3

[0046] Embodiment 3 (1). The synthesis of Jubet alcohol polyoxyethylene ether:

[0047] Add Gubet alcohol and powdery potassium hydroxide to form reaction system in the reactor that condensing unit, stirring device and gas disperser are housed, contain the Gubet alcohol of 0.47 mole and the potassium hydroxide of 0.38 gram powder in the system, Heat to 150°C. Blow the entire reaction system with pure nitrogen for 12 minutes to remove the air in the system, then slowly pass ethylene oxide through the safety device, and enter the Gubet cetyl alcohol-potassium hydroxide solution in the reactor through the gas disperser In the process, the addition reaction of ethylene oxide and Jubet cetyl alcohol (absorbing ethylene oxide), the speed of adding ethylene oxide is controlled so that the ethylene oxide gas can be completely absorbed by Gubet cetyl alcohol prevail. After the reaction is complete (it usually takes about 7 hours for ethylene oxide to be completely absorbed), blow the...

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Abstract

The invention refers to a kind of active agent and the manufacturing method, and the application that the active agent is used as degreasing agent in triple oil extraction. The invention synthesizes primary alcohol into branch jubeite alcohol through jubeite reaction, then epoxy froming, sulphonating and neutralizing, forms a negative ion surface active agent which contains some non-ion surface active agent. The agent can form micro-latex with the oil without the aid surface active agent, decreases the interfacial tension between water and oil greatly. The invention synthesizes hydrophobe base group with 12~18 carbon and surface active agent with different EO number, researches the interfacial tension between it and the raw oil and simulative oil, and acquires prominent surface active agent system.

Description

technical field [0001] The invention belongs to the field of high-efficiency surfactants, in particular to a surfactant and a preparation method thereof, and the application of the surfactant as an oil displacement agent in oil field tertiary oil recovery. Background technique [0002] In the EOR chemical flooding technology, whether it is the currently used surfactant flooding (micelle flooding, microemulsion flooding), or the composite flooding (combination of alkali / surfactant / polymer) that is currently considered to have the most commercial prospects, It is inseparable from choosing a suitable surfactant to reduce the interfacial tension value between oil and water from 20-30mN / m to a low or ultra-low value (10 -3 -10 -4 mN / m), thereby greatly improving the oil displacement efficiency. [0003] At present, in tertiary oil recovery, the commonly used surfactants are petroleum sulfonates, alkylbenzene sulfonates or other surfactants containing benze...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K23/04C09K23/42
Inventor 俞稼镛靳志强王涵慧
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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