Three reasons for air compressor oil coking
Air compressor oil coking, in practical applications, the viscosity of the oil increases, the acid value increases, the color becomes darker, and the insoluble matter or deposit increases.
The reasons for air compressor oil coking are as follows:
01 oxidation
Air compressor oil reacts with oxygen, sulfur and other substances in the air under high temperature and metal catalysis to form alcohols, aldehydes, ketones, acids and oxides. Some hydrocarbons are polymerized under the long-term action of oxygen and high temperature to form insoluble matter. The higher the pressure of the air compressor, the greater the oxygen concentration, the more severe the oxidation of the oil, and the shorter the oil life.
02 moisture effect
The moisture in the air condenses and enters the oil after compression, and the vigorous agitation of the unit during operation causes the two liquids of "oil" and "water" which cannot be mixed together to become an emulsion. The emulsified oil not only reduces the lubricating effect, but also causes the corrosion of the equipment caused by the reaction of the additive or the base oil. Corrosion is gradually deposited, severely forming part of the sludge or coke.
03 old oil effect
Most of the current air compressors use mineral oil or semi-synthetic oil based on mineral oil, and the service life is generally between 2000 and 4000 hours. This kind of oil usually runs for about two years and there will be coking.
