The difference between crude paraffin oil and paraffin oil
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Is crude white oil a raw material for the production of white oil? What manufacturing processes are required to convert crude white oil into white oil?
Raw crude white oil is subjected to hydrorefining (mainly involving reactions such as hydrodesulfurization, hydrodenitration, and aromatization) and distillation to produce a range of white oil products.
White oil, also known as mineral white oil, is a highly refined mineral oil. It is colorless, tasteless, and odorless, exhibits chemical inertness and light stability, with a molecular weight ranging from 300 to 450. It is primarily composed of alkanes, cycloalkanes, and a small amount of aromatics with alkyl side chains. White oil is generally produced by using lubricating oil fractions derived from low-sulfur paraffinic crude oils or naphthenic low-wax crude oils, through sulfonation or hydrogenation methods. The purpose is to remove various harmful and reactive substances from the crude oil, such as aromatics, nitrogen, oxygen, sulfur, etc. Due to increasing environmental awareness, there are now stricter requirements regarding the levels of polycyclic aromatic hydrocarbons, halogens, and heavy metals. The EU’s REACH regulation specifies 16 substances that are not allowed to be present in products.
White oil is paraffin oil; its components are relatively heavy, usually ranging from C16 to C21. The specifications vary among different manufacturers, but the main components should remain the same
Coarse white oil is probably the waste white oil after use; it fails the machine impurity standards.
There are corresponding quality standards, but to determine the actual quality of a crude paraffin oil, a detailed analysis is necessary. Nowadays, the quality of some crude paraffin oils is already quite good, and no further processing is required.
The names for these white oils are quite confusing nowadays; coarse white oil and white oil seem to be relative terms as well. Industrial white oil has **standards**, while crude white oil does not. It can only be said to be a product of white oil that has not undergone hydrogenation (desulfurization, denitration, aromatics saturation). . .
There is now a standard for crude white oil; it was established a couple of years ago. I’ve forgotten the standard number, but you can look it up.