Process for increasing Bright Stock raffinate oil production

Details Process for increasing Bright Stock raffinate oil production Process for increasing Bright Stock raffinate oil production

1984-09-06

1986-06-03

Metz, Andrew H.

Mineral oils: processes and products

Fractionation

Deasphalting

208315, C10G 2100

Patent

active

045928320

ABSTRACT:
A process for increasing the production of Bright Stock oil in a lube oil process scheme. Aromatic extract oil, after being separated from the extraction solvent, is recycled back to the deasphalter unit and combined with a vacuum residuum in 10-20 LV %, based on the total deasphalter feed, prior to deasphalting. After deasphalting and aromatics extraction the absolute yield of raffinate is increased.

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patent: 2939838 (1960-06-01), Murphey
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patent: 4168226 (1979-09-01), White et al.
patent: 4419227 (1983-12-01), Sherman

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