Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2006-06-16
2008-09-02
Griffin, Walter D. (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C208S106000, C208S130000, C208S132000, C585S648000, C585S652000
Reexamination Certificate
active
07419584
ABSTRACT:
A process is provided for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, optionally further heating the mixture, flashing the mixture within a flash/separation vessel to form a vapor phase and a liquid phase, partially condensing the vapor phase by contacting with a condenser within the vessel, to condense at least some coke precursors within the vapor while providing condensates which add to the liquid phase, removing the vapor phase of reduced coke precursors content as overhead and the liquid phase as bottoms, heating the vapor phase, cracking the vapor phase in a radiant section of a pyrolysis furnace to produce an effluent comprising olefins, and quenching the effluent and recovering cracked product therefrom. An apparatus for carrying out the process is also provided.
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Bancroft Jennifer L.
Messinger John R.
Stell Richard C.
Stephens George
ExxonMobil Chemical Patents Inc.
Griffin Walter D.
Nguyen Huy-Tram
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