PROCESSES FOR REDUCING DIENES IN A HIGH PURITY POLYENE STREAM
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
May 13, 2015
filing date -
May 13, 2015
priority date (Note) -
Published
status (Latency Note)
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Abstract
Processes for producing a propylene stream having at least 95% propylene and a reduced level of dienes. A selective hydrogenation zone converts dienes into olefins in a stream having at least C3 and C4 olefins from a feed stream including butene and C4 dienes. The selective hydrogenation zone may be disposed between a demethanizer and a deethanzier or it may be disposed downstream of both the demethanizer and the deethanizer. A C3 splitter and an acetylene conversion zone may be utilized.
First Claim
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