Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2006-05-11
2009-12-01
Bullock, In Suk (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C208S04800Q, C208S125000, C208S128000, C208S130000, C208S132000, C208S178000, C585S647000, C585S648000, C585S652000
Reexamination Certificate
active
07625480
ABSTRACT:
The invention relates to a method for processing asphaltene-containing feed to a pyrolysis furnace by raising the final boiling point of the feed/steam mixture to the pyrolysis furnace to ensure fouling occurs lower in the convection section where the mixture of air and steam can burn off fouling deposits during decoking operations. The final boiling point of the feed stream is increased by adding a heavy essentially asphaltene-free high boiling point hydrocarbon to the feed stream before the feed stream enters the convection section of the pyrolysis furnace, whereby said fouling occurs lower in the convection section.
REFERENCES:
patent: 3532542 (1970-10-01), Shimizu et al.
patent: 3707459 (1972-12-01), Mason et al.
patent: 3922216 (1975-11-01), Wilson et al.
patent: 4178228 (1979-12-01), Chang
patent: 4397740 (1983-08-01), Koontz
patent: 4931164 (1990-06-01), Dickakian
patent: 5443715 (1995-08-01), Grenoble et al.
patent: 6013852 (2000-01-01), Chandrasekharan et al.
patent: 7220887 (2007-05-01), Stell et al.
patent: 2004/0004022 (2004-01-01), Stell et al.
patent: 2005/0261535 (2005-11-01), Beattie et al.
patent: 218 116 (1985-01-01), None
patent: 222 324 (1985-05-01), None
patent: 2 006 259 (1979-02-01), None
patent: WO 2005/113722 (2005-12-01), None
Moore et al., “Next Generation Polyalphaolefins—the Next Step in the Evolution of Synthetic Hydrocarbon Fluids,” www.innovene.com, Innovene USA LLC, (Nov. 22, 2005).
Beattie David
Bleckinger David
Keusenkothen Paul F.
McCoy James N.
McVicker Bryan Daniel
Bullock In Suk
ExxonMobil Chemical Patents Inc.
Singh Prem C.
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