Petroleum hydroconversion using acid precipitation of preasphalt

Details Petroleum hydroconversion using acid precipitation of preasphalt Petroleum hydroconversion using acid precipitation of preasphalt

1981-12-28

1984-07-03

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 95, 208 98, 208108, 208256, 208281, C10G 4708, C10G 6906

Patent

active

044578300

ABSTRACT:
A process for catalytic hydroconversion of heavy petroleum feedstocks containing preasphaltenes to produce lower-boiling hydrocarbon liquid products. In the process, an inorganic acid is added to the reactor effluent residual fraction boiling above about 950.degree. F. to produce substantial precipitation of the preasphaltene materials. The clarified overhead fraction is recycled to the reaction zone, and the precipitated preasphaltene material is passed to further processing, such as coking to recover additional light oils. The reactor can advantageously be an upflow ebullated catalytic bed type and may use fine size catalyst for increased hydroconversion.

REFERENCES:
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patent: 2352236 (1944-06-01), Thomas
patent: 2796387 (1957-06-01), Schmidt
patent: 2800427 (1957-07-01), Junk et al.
patent: 2966450 (1960-12-01), Kimberlin et al.
patent: 3085061 (1963-04-01), Metrailer
patent: 3412010 (1968-11-01), Alpert et al.
patent: 3622499 (1971-11-01), Stine et al.
patent: 4082648 (1978-04-01), Murphy
patent: 4390416 (1983-06-01), Ritter et al.

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