Biochemical complex demulsifier

By combining Pseudomonas aeruginosa fermentation broth with chemical demulsifiers, optimizing fermentation conditions, and adding hydrophobic additives, the problems of high energy consumption and low efficiency of existing demulsifiers were solved, achieving a high-efficiency and low-cost demulsification effect.

CN117797519BActive Publication Date: 2026-06-16PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2022-09-30
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing chemical demulsifiers suffer from high energy consumption in oil collection, substandard wastewater treatment, and difficulty in achieving high efficiency and universal applicability. The effectiveness of microbial demulsifiers in practical systems needs to be improved.

⚗Method used

A mixture of Pseudomonas aeruginosa fermentation broth, trimethylolpropane polyether, and epoxy polyether was used as a biochemical composite demulsifier. Hydrophobic aids such as benzene and toluene were added, and fermentation conditions were optimized to improve the demulsification effect.

🎯Benefits of technology

It achieves highly efficient dehydration with a dehydration rate of over 95%, a clear oil-water interface, low cost, and less than 120 ppm oil content in water, making it suitable for the petrochemical industry.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of petroleum chemical industry, and particularly relates to a biochemical composite demulsifier, which comprises a microbial demulsifier and a chemical demulsifier, wherein the microbial demulsifier is prepared from a fermentation liquor of pseudomonas aeruginosa, and the chemical demulsifier is a mixture of trimethylolpropane polyether and epoxy polyether, and has the advantages of excellent demulsification effect and low cost.
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