Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2009-07-24
2011-11-08
Dentz, Bernard (Department: 1622)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S538000, C203S076000, C203S081000, C203S083000, C203S085000, C203S095000
Reexamination Certificate
active
08053586
ABSTRACT:
Systems and processes for recovering alkylene oxide, including an alkylene oxide recovery column including a stripping section located in the column to convert a portion of a feed stream to a gas phase including alkylene oxide; a reabsorption section in the column above the stripping section including a water stream to reabsorb the alkylene oxide in the gas phase portion and to produce an aqueous solution, a first stripping gas to strip carbon dioxide and oxygen from the aqueous solution by converting a portion of the aqueous solution to a gaseous portion, producing an alkylene oxide stream, and a side take-off located at a bottom portion of the reabsorption section for removal of the alkylene oxide stream; a condenser to partially condense the gas phase portion; and a top take-off for removal of a light impurity fraction.
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Andresen Harvey E.
Conneway Fred A.
Osborne Bernie B.
Stadlwieser Clarence P.
Brooks Cameron & Huebsch PLLC
Dentz Bernard
Dow Technology Investments LLC
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