PROCESS FOR FLUID CATALYTIC CRACKING OF HEAVY OIL
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Apr 30, 2015
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May 30, 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 comprises contacting the heavy oil with a catalyst containing 12 to 24 percent by mass of a shape selective zeolite under conditions of a reaction zone outlet temperature of 580 to 630° C., a catalyst/oil ratio of 15 to 40 weight/weight and a hydrocarbon residence time in the reaction zone of 0.1 to 1.0 second to produce a cracked product having a secondary cracking activity (C2 olefin concentration/C4 olefin concentration) value in the range of 0.30 to 0.55.
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