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US 10,526,549 B2Granted
By-product stream upgrading in a propylene oxide/styrene coproduction process
AssigneeLyondell Chemical Technology, L.P.
InventorsSandor Nagy, Dan D. Lindsey, Barbara Kimmich, Justin E. Turner, Nicholas Bruschi, Ha H. Nguyen, Pranit S. Metkar, Anthony S. Dearth
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Abstract
The present disclosure relates to a method including subjecting an organic stream comprising at least one oxygenate to hydrotreatment, whereby a hydrotreatment product comprising ethylbenzene is produced, wherein the organic stream is a product of a process for the production of propylene oxide; and separating an ethylbenzene product stream from the hydrotreatment product, to yield a residual stream.
Claims19
A method comprising:
- (a) Subjecting ethylbenzene and oxygen to a propylene oxide (PO) production process or a propylene oxide and styrene monomer (POSM) co-production process to produce an effluent;
- (b) Separating ethylbenzene and styrene from the effluent and recovering an organic stream comprising at least one oxygenate;
- (c) Subjecting the organic stream to a hydrotreatment in the presence of a hydrotreatment catalyst comprising molybdenum, to produce a hydrotreatment product comprising ethylbenzene;
- and,
- (d) Separating an ethylbenzene product stream from the hydrotreatment product, to yield a residual stream.
2 more elements
A method comprising:
- (a) Subjecting ethylbenzene and oxygen to a propylene oxide (PO) production process or a propylene oxide and styrene monomer (POSM) co-production process to produce an effluent;
- (b) Separating ethylbenzene and styrene from the effluent and recovering an organic stream comprising at least one oxygenate and sodium contamination;
- (c) Reducing the level of sodium in the contaminated organic stream, to provide a pretreated organic stream;
- (d) Subjecting the pretreated organic stream to a hydrotreatment in the presence of a hydrotreatment catalyst comprising molybdenum to produce a hydrotreatment product comprising ethylbenzene;
- (e) Separating an ethylbenzene product stream from the hydrotreatment product, to provide a residual stream.
2 more elements
A method comprising:
- (a) Subjecting ethylbenzene and oxygen to a propylene oxide (PO) production process or a propylene oxide and styrene monomer (POSM) co-production process to produce an effluent;
- (b) Separating ethylbenzene and styrene from the effluent and recovering an organic stream comprising at least one oxygenate;
- (c) Subjecting the organic stream to a hydrotreatment in the presence of a hydrotreatment catalyst comprising molybdenum to produce a hydrotreatment product comprising ethylbenzene;
- (d) Separating an ethylbenzene product stream from the hydrotreatment product, to yield a residual stream;
- and
- (e) Reusing the separated ethylbenzene product as a feed in the process for the coproduction of propylene oxide and styrene monomer propylene oxide (PO) production process or the propylene oxide and styrene monomer (POSM) co-production process.
3 more elements
Dependencies are inferred from the claim text.