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
CN110452376BActive Publication Date: 2022-03-15YANGTZE UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANGTZE UNIVERSITY
Publication Date
2022-03-15

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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.
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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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