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Castrol: basic oil knowledge of lubricating oil

Release date:2017-04-12   

Lubricating oil base oil mainly consists of mineral base oil, synthetic base oil and vegetable oil base oil. Mineral base oil is used widely, the dosage is very big (about 90%), but must use some applications of synthetic base oil and vegetable oil base oil products, thus making the two base oil to get rapid development.
Mineral base oil
Lubricating oil base oil mainly consists of mineral base oil, synthetic base oil and vegetable oil base oil. Mineral base oil is used widely, the dosage is very big (about 90%), but must use some applications of synthetic base oil and vegetable oil base oil products, thus making the two base oil to get rapid development.
Mineral base oil
Mineral oil base oil is refined from crude oil. The main production process of lube oil base oil is: constant vacuum distillation, solvent deasphalting, solvent refining, solvent dewaxing, white clay or hydrogenation. In 1995, we revised the current standard of lubricating oil base oil in our country, mainly modified the classification method, and added the special basic oil standard of low coagulation and deep refining. The most important of the production of mineral lubricants is the selection of the best crude oil.
The chemical composition of mineral base oil includes high boiling point, high molecular weight hydrocarbon and non-hydrocarbon mixture. Its composition is commonly alkane (linear, branched chain, much branched chain), naphthene (single, double loop, polycyclic), aromatics (monocyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons), ring alkyl aromatics and oxygen, nitrogen and sulfur containing organic compounds and non-hydrocarbon compounds such as colloid and asphaltene.
Synthetic base oil
Synthetic lubricants are the basic oils synthesized by chemical methods, and there are many kinds of synthetic base oils, including synthetic hydrocarbons, synthetic esters, polyether, silicone oil, fluorinated oils, and phosphates. Synthetic lubricants have better thermal oxidation stability than mineral oil, high thermal decomposition temperature, low temperature resistance, etc., but the cost is high, which can guarantee the equipment parts to work in more demanding situations.
Vegetable oil
Vegetable oil is becoming more and more popular. It has the characteristics of mineral oil and most synthetic oils, which can reduce environmental pollution rapidly. Because all of the industrial enterprises in the world today are looking for measures to reduce the pollution to the environment, and this kind of "natural" lubricating oil has the characteristics of cost is high, although the vegetable oil to be offset the increased cost of using other mineral oil, synthetic lubricants brought about by the environmental costs.
Vegetable oil has the advantage of low toxicity, low lubricating property and extreme pressure. However, vegetable oil is more expensive than mineral oil due to its low yield, and another disadvantage is that it is easy to be waxed at low temperature, and the oxidation stability is not very good. But in recent years, great progress has been made, such as the United States, Ryan cuny using patent Stablized manufacturing high oleic acid base oil, the performance has reached the level of synthetic oil. With the awareness of environmental protection and energy conservation and emission reduction, plant base lubricating oil will have a great prospect.

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