Apparatus for solvent-deasphalting residual oil containing aspha

Details Apparatus for solvent-deasphalting residual oil containing aspha Apparatus for solvent-deasphalting residual oil containing aspha

1996-09-19

1999-06-22

Griffin, Walter D.

Mineral oils: apparatus

Solvent extraction

208309, 208311, 208337, B01D 1102

Patent

active

059140100

ABSTRACT:
A feed stream of asphaltene-containing residual oil is processed by contacting the feed stream with a solvent to form a first primary liquid stream containing deasphalted oil (DAO) and some solvent, and a second primary liquid stream containing asphaltene and some solvent. The first and second liquid streams are heated; and the heated streams are respectively processed to recover the solvent and to produce a DAO product stream substantially free of solvent, and an asphaltene product stream substantially free of solvent. A portion of the DAO product stream is heated to produce a stream of heated DAO, a portion of which indirectly heats the two primary liquid streams.

REFERENCES:
patent: 2010008 (1935-08-01), Bray
patent: 2669538 (1954-02-01), Yurasko et al.
patent: 2850431 (1958-09-01), Smith
patent: 2943050 (1960-06-01), Beavon
patent: 3423308 (1969-01-01), Murphy
patent: 4017383 (1977-04-01), Beavon
patent: 4279739 (1981-07-01), Roach
patent: 4395330 (1983-07-01), Auboir et al.
patent: 4784753 (1988-11-01), Hotier et al.

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