Lubricating agent of sulfur dioxide compressor

Abstract

The invention relates to a lubricating agent of a sulfur dioxide compressor. The lubricating agent is prepared by compounding oil-soluble polyether and low-viscosity poly alpha-olefin to be base oil and mixing with various additives. The lubricating agent effectively alleviates the dilution degree on oil products caused by sulfur dioxide and avoids frictional wear due to insufficient oil film thickness caused by ultralow viscosity of the oil products, has excellent sediment controllability, does not generate carbon deposit and oil sludge, increases safety coefficient, has excellent viscosity-temperature property, low-temperature property, volatility, cooling property, high anti-shearing stability, hydrolytic stability and thermal oxidation stability, can reduce the friction coefficient of the surface of metal, and can meet the using requirement of the sulfur dioxide compressor under the harsh working condition.

Description

technical field [0001] The invention belongs to the field of lubricant for compressors, in particular to lubricants for sulfur dioxide compressors. Background technique [0002] At normal temperature, sulfur dioxide is a colorless, toxic gas with a pungent odor. Its density is 2.26 times heavier than that of air. The density under standard conditions is 2.75g / L. It is easily soluble in water (1:40 at normal temperature and pressure), and its boiling point is 263K, melting point 197K, easy to liquefy, the supercritical temperature of supercritical sulfur dioxide is 157.6°C, and the critical pressure is 7.98MPa. It is an important chemical raw material with a wide range of uses. In the sugar industry, sulfur dioxide is a clarifying agent and bleaching agent in the sulfite cane juice clarification process. The sulfur dioxide used in the sugar factory is obtained by burning sulfur in a sulfur furnace, which occupies a large area; sulfur dioxide gas is easy to leak, and the ope...

AI Technical Summary

Problems solved by technology

When ordinary compressor oil is used in sulfur dioxide compressors, the oil is easily oxidized and deteriorated, and the oxidation products are carbon deposits, film and sludge, etc., which will cause serious damage to the compressor and pose a safety hazard

The problems encountered in the lubricating oil used in sulfur dioxide compressors can be attributed to: the oil is easily diluted by sulfur dioxide and oxidized and deteriorated, easy to produce carbon deposits, sludge and paint film, insufficient thermal oxidation stability, anti-corrosion and anti-rust performance still needs to be improved, etc.

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