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Non-polyether demulsifier and preparation method thereof

A non-polyether and demulsifier technology, applied in the field of non-polyether type demulsifier and its preparation, can solve the problems of insufficient variety, single structure of polyether products, dangerous environmental pollution, etc., and achieves obvious demulsification effect. High wetting performance and penetration ability, the effect of avoiding environmental pollution

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the face of crude oil with increasingly complex and changeable composition, the structure of polyether products is single, and the variety of single agent is not rich enough
In addition, the dangers and environmental pollution problems of ethylene oxide and propylene oxide in the process of use, transportation and storage are difficult to solve

Method used

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  • Non-polyether demulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 0.75g of sodium dodecylbenzenesulfonate, 0.375g of alkylphenol polyoxyethylene ether OP-100, and 67g of distilled water into a 500ml reactor. After dissolving, add 6.9g of butyl acrylate and 1.0g of acrylic acid. Stir at room temperature at high speed for 10-60 minutes to obtain a seed emulsion.

[0029] Preparation of the initiator solution: 0.375 g of potassium persulfate was dissolved in 25 g of deionized water, and stirred evenly to obtain the initiator solution.

[0030] Preparation of mixed monomer emulsion: 1.75g ​​sodium dodecylbenzenesulfonate, 100.875g alkylphenol polyoxyethylene ether OP-100.875g, 133g distilled water, after dissolving, add 62.1g butyl acrylate and 7.2g acrylic acid, stir and emulsify 10 to 60 minutes to obtain a mixed monomer emulsion.

[0031] Preparation of demulsifier: keep the reaction device in a nitrogen atmosphere, add 30% initiator solution to the seed emulsion heated to 80°C, and start to add the mixed monomer emulsion and the ...

Embodiment 2

[0033]Add 0.75g of sodium lauryl sulfate, 0.375g of alkylphenol polyoxyethylene ether OP-100, and 67g of distilled water into a 500ml reactor. After dissolving, add 3.5g of butyl acrylate, 3.5g of lauryl acrylate, and 0.5g of acrylic acid. Stir at room temperature at high speed for 10-60 minutes to obtain a seed emulsion.

[0034] Preparation of the initiator solution: 0.225g of 2,2-azo(2-amidinopropane) dihydrochloride (V50) was dissolved in 25g of deionized water and stirred evenly to obtain the initiator solution.

[0035] Preparation of mixed monomer emulsion: 1.75g ​​of sodium lauryl sulfate, 0.875g of OP-100, 133g of distilled water, after dissolving, add 31.5g of butyl acrylate, 31.5g of lauryl acrylate, 4.5g of acrylic acid, diethyl dimethacrylate Glycol ester 0.2g, stirred and emulsified for 10-60min to obtain mixed monomer emulsion.

[0036] Preparation of demulsifier: Keep the reaction device in a nitrogen atmosphere, add 30% initiator solution to the seed emulsion...

Embodiment 3

[0038] Add 0.75g of sodium lauryl sulfate, 0.375g of alkylphenol polyoxyethylene ether OP-100, and 67g of distilled water into a 500ml reactor. After dissolving, add 4.8g of butyl acrylate, 2.3g of octadecyl acrylate, and 0.4g of acrylic acid . Stir at room temperature at high speed for 10-60 minutes to obtain a seed emulsion.

[0039] Preparation of the initiator solution: 0.225g of 2,2-azo(2-amidinopropane) dihydrochloride (V50) was dissolved in 25g of deionized water and stirred evenly to obtain the initiator solution.

[0040] Preparation of mixed monomer emulsion: 1.75g ​​of sodium lauryl sulfate, 0.875g of OP-100, 133g of distilled water, after dissolving, add 43.2g of butyl acrylate, 20.7g of stearyl acrylate, 3.6g of acrylic acid, dimethacrylate Ethylene glycol ester 0.4g, stirred and emulsified for 10-60min to obtain mixed monomer emulsion.

[0041] Preparation of demulsifier: Keep the reaction device in a nitrogen atmosphere, add 30% initiator solution to the seed ...

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Abstract

The invention provides a novel non-polyether demulsifier and its preparation method. The non-polyether demulsifier contains a copolymer prepared by seeded emulsion copolymerization of a hydrophilic monomer, a hydrophobic monomer and an optional cross-linked monomer. The weight ratio of the hydrophilic monomer to the hydrophobic monomer is 3: 97-20: 80. The demulsifier of the invention has advantages as follows: raw materials are easily available; production condition is mild; high temperature and high pressure are not required; operation is convenient; and cost is low. The non-polyether demulsifier of the invention can be used in demulsification of crude oil in an oil field, especially in demulsification of thickened oil. The non-polyether demulsifier has a good demulsification effect.

Description

technical field [0001] The invention relates to a novel non-polyether demulsifier and a preparation method thereof. Background technique [0002] At present, most of my country's oil production uses water flooding, and the produced crude oil contains a large amount of water in the form of emulsion. Water content in crude oil emulsion will increase the load on pumps, pipelines and storage tanks. Therefore, it is necessary to demulsify crude oil production fluid. Most of the demulsifiers in my country are polyether-type demulsifiers, which are mainly non-ionic polyoxyethylene polyoxypropylene block polymers. Many products. However, in the face of crude oil with increasingly complex and variable composition, polyether products have a single structure, and the variety of single agents is not rich enough. In addition, the danger of ethylene oxide and propylene oxide in the process of use, transportation and storage and the pollution to the environment are difficult to solve. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F222/20C08F222/14C08F220/14C08F2/26C08F2/30C10G33/04
Inventor 徐伟侯丹丹陈锡荣张天宇许春梅张增丽
Owner CHINA PETROLEUM & CHEM CORP
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