Processing Vacuum Residue by Solvent Extraction Deasphalting

3 Processing Vacuum Residue by Solvent Extraction (Deasphalting) (Biedermann et al., 1987) 

Deasphalting is a liquid-liquid separation operation that extracts the last of the easily convertible hydrocarbons from the vacuum residue. Solvents enipl ec) are light paraffins propane, butane, and pentane. The yimd In deasphalted oil increases with the molecular weight of the solvent, but its quality decreases. 5 uxct 

Asphalt makes up the residue of the deasphalting operation and concentrates the major portion of the impurities such as metals, sediment, 1 salts and asphaltenes. Asphalt fluidity decreases as the molecular weight of 

Properties of cuts Light gasoline Heavy gasoline Kerosene Diesel oil AR VD VR 

Material balance and properties of the main fractions resulting from primary and secondary fractionation of a 50/50 volume % mixture of Arabian Ligb and heavy crude oil (specific gravity d f = 0.875). 

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