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Propane debitumene

 Last Update: 2023-03-27
 Source: Internet
 Author: User

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When using decompression residue oil as raw material to produce high-viscosity lubricating oil, the residual oil includes a large number of asphaltene, colloids and non-hydrocarbon compounds containing sulfur, nitrogen, oxygen, etc.
, as well as complex colloidal substances composed of trace metals, commonly known as asphalt, which will affect the viscosity and temperature performance, lubrication performance and stability of lubricating oil, and must be removed
.
In the industry, the method of propane deasphalt is generally used to remove it
.

It has been found that at a certain temperature, the solubility of propane to alkanes, naphthenes and monocyclic aromatic hydrocarbons in the oil is strong, while the solubility of polycyclic aromatic hydrocarbons, thick cyclic aromatic hydrocarbons and colloids is very weak, and almost no dissolution of asphaltene
.
Using the selective solubilization characteristics of propane for different components in oil, non-ideal components and harmful substances in residual oil can be removed, and deasphalt oil with low content such as residual carbon value, heavy metal, sulfur and nitrogen can be obtained as lubricating oil raw materials
.

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