PROCESS FOR FLUID CATALYTIC CRACKING OF HEAVY OIL
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United States of America Patent
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Jan 12, 2017
app pub date -
Jan 20, 2015
filing date -
Jan 24, 2014
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Provided is a process for fluid catalytic cracking of a heavy oil by contacting the oil with a catalyst at an elevated temperature for a short period of time to produce light olefins such as propylene and butene. The process includes contacting the heavy oil with a catalyst containing as a constituent thereof a fluid catalytic cracking catalyst with a weight ratio (Wmat/Wusy) of an active matrix weight (Wmat) to an ultrastable Y type zeolite weight (Wusy) of 0 to 0.3, under conditions where the reaction zone outlet temperature is from 580 to 630° C., the catalyst/oil ratio is from 15 to 40 weight/weight and the residence time of hydrocarbon in the reaction zone is from 0.1 to 1.0 second.
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