Mineral oils: processes and products – Fractionation – Deasphalting
Reexamination Certificate
2001-09-13
2009-11-24
Nguyen, Tam M (Department: 1797)
Mineral oils: processes and products
Fractionation
Deasphalting
C208S045000, C208S311000, C208S313000, C208S339000
Reexamination Certificate
active
07622035
ABSTRACT:
A method of deresinating a crude oil comprises contacting the crude oil with a carbon dioxide containing fluid, the crude oil having an initial API gravity and comprising an oil phase, resins, and asphaltenes, and wherein the carbon dioxide containing fluid enters the oil phase of the crude oil in a manner such that the resins and asphaltenes precipitate out of the crude oil such that the final API gravity of the crude oil is higher than the initial API gravity of the crude oil.
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Carbonell Ruben Guillermo
Kilpatrick Peter Kelley
Zaki Nael Naguib
Myers Bigel & Sibley & Sajovec
Nguyen Tam M
North Carolina State University
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