Reciprocating air compressor oil additive composition and method of making

By using a dual-ionic liquid compounding system, the problems of insufficient rust prevention, oxidation resistance, and wear resistance of existing lubricating oils under high pressure conditions have been solved, and a lubricating oil suitable for high-pressure reciprocating air compressors has been prepared, which has excellent performance and low evaporation loss.

CN119899716BActive Publication Date: 2026-05-29PETROCHINA 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
2023-10-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing mineral oil-based and ordinary synthetic lubricants are insufficient to meet the rust prevention, oxidation resistance and wear resistance requirements of reciprocating air compressors under high exhaust pressure and high temperature conditions. Ionic liquids have limited applications in the lubricant field, and the multifunctionality of dual ionic liquids has not been reported.

Method used

A dual-ionic liquid compound system is adopted, including dual-ionic liquid, aromatic amine antioxidant, bisphenol antioxidant, thiophosphate anti-wear agent, dispersant and antifoaming agent, and polyol ester base oil, to form a reciprocating air compressor oil additive. By optimizing the proportion of each component, a lubricating oil with excellent rust prevention, oxidation resistance and wear resistance is formed.

Benefits of technology

It achieves excellent rust prevention, oxidation resistance and wear resistance of lubricating oil under high pressure conditions, reduces evaporation loss, is suitable for high-pressure reciprocating air compressor equipment, extends oil life and maintains lubrication effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a reciprocating air compressor oil additive composition, which comprises the following components in percentage by mass: a dual ionic liquid 0.1-1%; an antioxidant 0.2-2%; an anti-wear agent 0.1-1%; a dispersant 0.01-0.1%; an anti-foaming agent 0.005-0.03%; and a balance of base oil; and the sum of the percentage by mass of the above components is 100%. The reciprocating air compressor oil additive composition can be obtained by uniformly mixing raw materials according to the composition. The reciprocating air compressor oil additive composition is blended into compressor oil, meets the requirements of the national standard GB / T 12691-2021 "air compressor oil", has excellent rust resistance, oxidation resistance, wear resistance and other properties, has low evaporation loss, is not prone to produce carbon residue, has a simple preparation process, is easy to operate, and has a wide application range.
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