Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-09-21
1991-04-16
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549523, 549532, 549534, 549535, 549536, C07D30110, C07D30108, C07D30132
Patent
active
050084143
ABSTRACT:
An improved process is provided for the production of oxides from hydrocarbons by reaction with oxygen, air or a gas enriched in oxygen relative to air, preferably the latter in the presence of an oxidation catalyst. An alkane, e.g. propane, is converted to an alkene in a catalytic dehydrogenator. The product stream is introduced into an oxidation reactor. The product formed therein is recovered in a conventional quench tower. The gaseous effluent from the quench tower is treated in a separator to produce an adsorbed stream, an oxygen-enriched stream, a waste stream and, if desired, a hydrogen-enriched stream. The oxygen-enriched stream may be recycled to the oxidation reactor depending on the nitrogen content thereof. The adsorbed stream plus at least a portion of the hydrogen-enriched stream is introduced into a selective oxidation unit to remove the remaining oxygen and then recycled to the dehydrogenator. The remainder of the hydrogen-enriched stream, if any, may be taken as product or vented. The dehydrogenator may be a multistage dehydrogenator wherein the product stream is withdrawn from a reactor other than the first and last reactors, the recycle streams are introduced into the next sequential reactor and the effluent from the last reactor is introduced into the first reactor, a reactor having a similar alkane composition or directly into the oxidation reactor.
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Maclean Donald L.
Malik Virginia A.
Ramachandran Ramakrishnan
Satchell, Jr. Donald P.
Brust Joseph Paul
Nemetz Carol A.
Pearlman Robert I.
The BOC Group Inc.
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