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A kind of polyamide-amine hyperbranched polymer and its preparation method and application

A technology of hyperbranched polymers and polyamides, which is applied in the dehydration/demulsification of hydrocarbon oil and the petroleum industry, etc. It can solve the problems that the demulsification efficiency needs to be improved, and achieve high demulsification efficiency, fast demulsification speed and low solvent consumption. little effect

Active Publication Date: 2022-03-15
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventors of the present application synthesized a demulsifier centered on propylenediamine by the same method, and tested its demulsification effect at a concentration of 40 mg / L and found that the light transmittance of its water phase was only 30 minutes at 60 ° C. is 58.6%, which shows that its demulsification efficiency still needs to be improved

Method used

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  • A kind of polyamide-amine hyperbranched polymer and its preparation method and application
  • A kind of polyamide-amine hyperbranched polymer and its preparation method and application
  • A kind of polyamide-amine hyperbranched polymer and its preparation method and application

Examples

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Effect test

Embodiment 1

[0033] Adopt the following method to prepare polyamide-amine hyperbranched polymer in the present embodiment, mainly comprise the following steps:

[0034] S1: 5.34g (0.02mol) of 4,4'-diaminodiphenylmethane was dissolved in 30ml of methanol, then 6.88g (0.08mol) of methyl acrylate was added dropwise thereto, and the mixture was kept at room temperature (25°C) The reaction was stirred at a rate of 300r / min for 24h.

[0035] S2: Add 33.6g (0.56mol) of ethylenediamine and 41.28g (0.48mol) of methyl acrylate into S1, continue the reaction at room temperature for 24h, and then remove the solvent methanol by reducing pressure.

[0036] S3: The mixed solution was reacted under reduced pressure at 60°C for 1h, 80°C for 1h, 100°C for 2h, 120°C for 2h, and 140°C for 2h, cooled naturally to room temperature, precipitated with ether, and dried in vacuo to obtain a bright yellow product.

[0037] Using 4,4'-diaminodiphenylmethane in this example as the core, controlling the stoichiometric...

Embodiment 2

[0042] 2mL polyamide-amine hyperbranched polymer concentration is the demulsifier aqueous solution of 1000mg / L and is added in 38mL diesel oil / water emulsion, and polyamide-amine hyperbranched polymer concentration is 50mg / L (50ppm) in the emulsion, passes Vibrate quickly to make it evenly mixed, and then stand at 60° C. for 30 minutes. The light transmittance of the water phase was determined to be 82.7%, and the demulsification efficiency was 95.4%. After standing at 60° C. for 60 minutes, the light transmittance of the aqueous phase was determined to be 84%, and the demulsification efficiency was 95.9%. After standing at 60° C. for 120 minutes, the measured light transmittance of the water phase was 87.1%, and the demulsification efficiency was 99.5%.

Embodiment 3

[0044] 2mL polyamide-amine hyperbranched polymer concentration is the demulsifier aqueous solution of 1000mg / L and is added in 38mL diesel oil / water emulsion, and polyamide-amine hyperbranched polymer concentration is 50mg / L (50ppm) in the emulsion, passes Vibrate quickly to make it evenly mixed, and then stand still at 50° C. for 60 minutes. The light transmittance of the water phase is determined to be 80.1%, and the demulsification efficiency is 93.7%.

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Abstract

The invention discloses a polyamide-amine hyperbranched polymer, a preparation method and application thereof, and relates to the technical field of petroleum additives. The polyamide-amine hyperbranched polymer of the present invention is a polyamide-amine hyperbranched polymer with 4,4'-diaminodiphenylmethane as the reaction center and an amine terminal group. The preparation method of the present invention is simple, comprising the following steps: reacting 4,4'-diaminodiphenylmethane and methyl acrylate at room temperature for 24 hours to prepare 0.5G ester with 4,4'-diaminodiphenylmethane as the core; Then add stoichiometric ratio of ethylenediamine and methyl acrylate, and prepare the polyamide-amine demulsifier with hyperbranched structure through normal temperature reaction, staged temperature rise reaction and other steps. The polyamide-amine hyperbranched polymer of the present invention is used as a demulsifier, which can quickly demulsify the oil-in-water emulsion under the condition of 50-70°C, and realize the effective separation of oil-water. The emulsion efficiency can reach 99.5%, and it has the characteristics of fast demulsification rate, less dosage and high demulsification efficiency.

Description

technical field [0001] The invention relates to the technical field of petroleum additives, in particular to a polyamide-amine hyperbranched polymer and its preparation method and application. Background technique [0002] Crude oil is produced in the form of water-in-oil (W / O) or oil-in-water (O / W) emulsion, and the water-polymer flooding technology used for enhanced oil recovery (EOR) has developed rapidly in recent years , resulting in a substantial increase in the number of oil-in-water (O / W) emulsions. Due to the existence of a dense film formed by natural surface active substances in the oil / water interface, the O / W water emulsion is highly stable, which seriously affects the oil transportation and subsequent refining process. Therefore, the demulsification research of O / W emulsion has very important significance. [0003] Chemical demulsification is to achieve the purpose of demulsification by adding a certain amount of chemical agents to the emulsion. Demulsifiers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C10G33/00
CPCC08G73/028C10G33/00
Inventor 米远祝匡家哲李平刘适叶泛江夏黄志明张泽俊袁怀奎
Owner YANGTZE UNIVERSITY
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