PROCESS AND APPARATUS FOR IMPROVING LIGHT OLEFIN YIELD FROM A FLUID CATALYTIC CRACKING PROCESS
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United States of America Patent
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Jun 23, 2016
app pub date -
Dec 19, 2014
filing date -
Dec 19, 2014
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The present invention discloses a process optimizing the yield of ethylene and propylene from a fluid catalytic cracking unit. The method combines a first catalytic reactor, a fractionation zone, a separation unit and a second catalytic reactor. The separation unit produces a first separate stream comprising C4 olefins and a second separate stream comprising C5 olefins. The separate streams may be combined and are passed to a second catalytic reactor for additional conversion to ethylene and propylene.
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