Olefin polymerization processes

A process for reducing the level of hydrogen in certain polymerization effluent and recycle streams containing unreacted propylene monomers and hydrogen by contacting the streams with a hydrogenation catalyst so as to convert at least part of the propylene to the corresponding alkane. The process is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Edwards, Todd S, Englehorn, Blu E, Lawson, Kevin W, Bauch, Christopher G, Trapp, Keith W
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A process for reducing the level of hydrogen in certain polymerization effluent and recycle streams containing unreacted propylene monomers and hydrogen by contacting the streams with a hydrogenation catalyst so as to convert at least part of the propylene to the corresponding alkane. The process is particularly applicable to the effluent from a slurry polymerization reactor which has been used to produce a polypropylene homopolymer or copolymer having a first molecular weight and at least part of the effluent is to be supplied to a slurry polymerization reactor to produce a polypropylene homopolymer or copolymer having a second, higher molecular weight.