Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Solvent extraction
Patent
1977-03-14
1978-07-18
Levine, Herbert
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
Solvent extraction
208 23, 208309, C10C 118, C10C 308
Patent
active
041014154
ABSTRACT:
Heavy hydrocarbon materials containing asphalt are separated into three different fractions according to chemical composition, namely, a paraffin-waxy fraction, a resin fraction, and an asphaltene-solids fraction, by a process comprising two-stage solvent treatment at different solvent-to-feed ratios and different temperatures. In another embodiment, a fourth product comprising an asphalt fraction can be produced by blending a portion of the resin fraction with a portion of the raffinate obtained from the first solvent extraction fraction stage.
REFERENCES:
patent: 2691621 (1954-10-01), Gagle
patent: 3311551 (1967-03-01), Van Pool
patent: 3563778 (1966-02-01), Corbett et al.
patent: 3830732 (1974-08-01), Gatsis
Levine Herbert
Phillips Petroleum Company
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