Mineral oils: processes and products – Fractionation – Deasphalting
Patent
1985-07-15
1989-01-03
Sneed, H. M. S.
Mineral oils: processes and products
Fractionation
Deasphalting
208 45, 208188, 208317, 208320, 208321, 196 1452, C10C 300
Patent
active
047955511
ABSTRACT:
In the solvent refining of a residual oil, a mixture of refined oil and refining solvent, and a mixture of pitch impurities and refining solvent are introduced into separate zones of a combination tower operated at a pressure of no greater than 100 psig to recover refining solvent from each of the mixtures. The combination tower is preferably A modified crude distillation tower from a preexisting crude unit, whereby idle crude units may be converted to solvent refining.
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Hamilton Gary L.
Rhoe Andrei
Satchell Donald P.
Lillie Raymond J.
Lummus Crest Inc.
Myers Helane
Olstein Elliot M.
Sneed H. M. S.
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