Membrane-augmented manufacture of cumene
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United States of America Patent
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Feb 25, 2003
Issued Date -
N/A
app pub date -
May 13, 2002
filing date -
Aug 30, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for manufacturing cumene by reacting propylene with benzene, including treating a vent stream from the reaction zone, to recover propylene for return to the reactor. The process involves using a gas separation membrane to separate propylene from propane in the reactor vent stream. The membrane separation step results in a residue stream typically containing as much as 30%, 40% or more propane, which is vented from the process, and a permeate stream containing 95% or less propylene, which is recirculated to the reactor.
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