Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Reexamination Certificate
2005-03-08
2005-03-08
Griffin, Walter D. (Department: 1764)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
C585S639000, C585S640000, C585S809000
Reexamination Certificate
active
06864401
ABSTRACT:
The present invention is a heat-integrated process for obtaining an ethylene and propylene enriched stream from an oxygenate to olefin reactor. The process comprises providing an effluent stream from an oxygenate to olefins reactor. The effluent stream comprises ethylene, propylene and one or more byproducts selected from the group consisting of propane, methyl acetylene, propadiene, dimethyl ether, acetaldyhyde and butylene. The process further includes quenching the effluent stream with the quench medium to provide an olefin stream. The olefin stream is separated into a heavy fraction and a remaining fraction. The remaining fraction is directed to a distillation column which separates the remaining fraction into a first fraction comprising a majority of both ethylene and a propylene and a second fraction comprising at least a majority of one or more heavier fraction. The bottoms of the distillation column is reboiled by the quench medium. The separation step allows the bottoms of the distillation column to be reboiled at a lower temperature.
REFERENCES:
patent: 4474647 (1984-10-01), Asselineau et al.
patent: 4560537 (1985-12-01), Tabk
patent: 5090977 (1992-02-01), Strack et al.
patent: 6121504 (2000-09-01), Kuechler et al.
patent: 6403854 (2002-06-01), Miller et al.
patent: 20020087041 (2002-07-01), Kuechler et al.
patent: 0 060 103 (1985-04-01), None
patent: WO 0200579 (2002-03-01), None
ExxonMobil Chemical Patents Inc.
Griffin Walter D.
Nguyen Tam M.
Sher Jaimes
LandOfFree
Heat-integrated high pressure system for separation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat-integrated high pressure system for separation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-integrated high pressure system for separation of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3391379