Conversion of asphaltene-containing charge stocks and product se

Details Conversion of asphaltene-containing charge stocks and product se Conversion of asphaltene-containing charge stocks and product se

1977-09-14

1978-11-07

Levine, Herbert

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With subsequent treatment of products

208309, 208361, 208364, C10G 3702

Patent

active

041244869

ABSTRACT:
A mixture of a hydrocarbon-selective solvent -- e.g. isobutane -- and deasphalted oil is separated in a two-stage hot-separator system at progressively higher temperatures and substantially the same pressure. Resulting vaporous phases are subjected to a cold-flash separation at a lower pressure and a considerably lower temperature. The initial hot separation, in the two-stage system, is effected at a temperature from about 1.0.degree. F. to about 25.degree. F. above the critical temperature of the solvent; the second is conducted at a temperature about 30.degree. F. to about 130.degree. F. above that in the initial hot-separation. This technique is especially advantageous when integrated into a catalytic slurry process for the conversion of metal- and asphaltene-containing hydrocarbonaceous black oils.

REFERENCES:
patent: 2383535 (1945-08-01), Dickinson et al.
patent: 3536607 (1970-10-01), Borst
patent: 3723297 (1973-03-01), Gatsis et al.
patent: 4017383 (1977-04-01), Beavon

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