Mineral oils: processes and products – Fractionation – Deasphalting
Reexamination Certificate
2007-10-30
2010-06-15
Hill, Jr., Robert J (Department: 1797)
Mineral oils: processes and products
Fractionation
Deasphalting
C208S045000
Reexamination Certificate
active
07736493
ABSTRACT:
The present invention relates to a process for improving a deasphalting unit process by producing an improved feedstream for the deasphalting process via ultrafiltration of a vacuum resid-containing feedstream. In particular, the present invention produces an improved quality feedstream to a solvent deasphalting process which results in improved deasphalted oil (DAO) production rates and/or higher quality deasphalted oils. The present invention can be particularly beneficial when used in conjunction with an existing deasphalting equipment to result in improved deasphalted oil (DAO) production rates and/or higher quality deasphalted oils from the existing deasphalting equipment without the need for significant equipment modifications to the existing deasphalting unit.
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B. Park, V. S. Ravi-Kumar, T. T. Tsotsis; &
Aldous Keith K.
Corcoran Edward W.
Cundy Stephen M.
Lee MaryKathryn
Leta Daniel P.
Berdelon Bruce M.
ExxonMobil Research and Engineering Company
Hill, Jr. Robert J
McCaig Brian
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