Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Solvent extraction
Patent
1978-01-30
1979-05-22
O'Keefe, Veronica
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
Solvent extraction
208309, C10C 118, C10C 300
Patent
active
041558332
ABSTRACT:
A more efficient separation of the asphaltenes from microcrystalline waxes in the bottoms from crude oil distillation is accomplished by using a natural gasoline fraction, boiling in the range of from 200.degree.-400.degree. F., as a solvent extraction agent and then effecting a centrifugal separation at elevated temperatures and pressures. The resulting separated asphaltenes will have far less microcrystalline wax content than the heretofore used procedures which involved the settling out of the asphaltenes in huge settling tanks.
REFERENCES:
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patent: 3360455 (1967-12-01), Corbett et al.
patent: 3364138 (1968-01-01), Campagne et al.
patent: 3476679 (1969-11-01), Fauber
patent: 3563778 (1971-02-01), Corbett et al.
patent: 3775292 (1973-11-01), Watkins
patent: 3796653 (1974-03-01), Gatsis
patent: 4069141 (1978-01-01), Lionetti et al.
Energy Modification Inc.
Liggett Philip T.
O'Keefe Veronica
Richardson Lillie
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