Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1988-12-23
1989-09-12
Therkorn, Ernest G.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210656, 210659, 585825, B01D 1508
Patent
active
048657417
ABSTRACT:
The invention is a method of group type separation of whole oils and bitumen by high performance liquid chromatography into fractions of asphaltenes, resins, aromatics, and saturated hydrocarbons. A multistep process is involved wherein the oil is initially solvated with a three part solvent mixture of methanol, acetone, and choroform. The solvated oil mixture is injected with a mobile phase into a cyano bonded phase column which will retain asphaltenes and resins, and pass through aromatics and saturated hydrocarbons. The unretained aromatics and saturated hydrocarbons are then injected into a silica column which will retain aromatics and pass through saturated hydrocarbons. Saturated hydrocarbons are recovered as they pass through the silica column. The resins, asphaltenes, and aromatics are recovered from the columns by a displacement material.
REFERENCES:
patent: 2936282 (1960-05-01), Paris
patent: 3849300 (1974-11-01), Martin
patent: 4341634 (1982-07-01), Matsushita
patent: 4787983 (1988-11-01), DiFoggio
patent: 4802986 (1989-02-01), Hayes
Collings, Jr. Edwin L.
Nolte David G.
Delhommer Harold J.
Park Jack H.
Priem Kenneth R.
Texaco Inc.
Therkorn Ernest G.
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