Stabilizer for dispersing heavy oil asphaltene at high temperature and method for preparing the same

By combining organic acid anhydrides, organic amide polymers, and ultra-high surfactants, a mixed stabilizer was developed to address the problem of poor thermal stability of existing asphalt stabilizers at high temperatures. This resulted in efficient and stable dispersion of heavy oil asphalt, reduced preparation costs, and extended equipment lifespan.

CN120005656BActive Publication Date: 2026-06-12PETROCHINA CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2023-11-14
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing asphalt stabilizers have poor thermal stability at high temperatures and cannot effectively prevent heavy oil asphalt from accumulating under high-temperature conditions, leading to pipeline blockage and equipment deposition.

⚗Method used

A stabilizer is formed by mixing organic acid anhydrides, organic amide polymers, fluorinated ultra-high surfactants, and organic acid ester polymers with substituents (components A, B, C, D, and E) with a solvent. The stabilizer is prepared by stirring at high temperature to ensure that it effectively disperses heavy oil asphalt at high temperatures.

🎯Benefits of technology

A low-cost and efficient method for stabilizing and dispersing heavy oil asphalt at high temperatures is provided, which significantly improves the stability of heavy oil asphalt, prevents deposition and aggregation at high temperatures, and extends the service life of equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a stabilizer for stably dispersing heavy oil asphaltene at high temperature and a preparation method thereof. The stabilizer comprises at least two of components A, B, C, D and E. Component A is an organic acid anhydride substance with an alkylamine, alkyl aniline, naphthylamine or amino pyridine in a side chain. Component B is an organic amide polymer. Component C is a fluorine-containing super high surfactant. Component D is an organic acid ester polymer with a dodecyl benzene sulfonic acid substituent or an alkyl amino benzene boronic acid substituent. Component E is an organic acid anhydride polymer with an alkyl linear chain or branched chain. The stabilizer composition disclosed by the application has the advantages of cheap and easily available raw materials, simple preparation process and low cost. The stabilizer composition has a short action time on oil asphaltene and still has a good stabilizing effect on heavy oil asphaltene at a high temperature of 150 DEG C to 300 DEG C.
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