Process for fluid catalytic cracking of heavy fraction oil

Details Process for fluid catalytic cracking of heavy fraction oil Process for fluid catalytic cracking of heavy fraction oil

1997-05-28

1999-09-14

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 585653, C10G 1105

Patent

active

059518502

ABSTRACT:
A heavy fraction oil is catalytically cracked by contacting the oil with a catalyst containing an ultrastable Y-type zeolite, in a fluid catalytic cracking apparatus having a regenerating zone, a reaction zone, a separation zone and a stripping zone and under conditions that a reaction zone outlet temperature is in a range of 550 to 700.degree. C., a catalyst/oil ratio is in a range of 15 to 100 wt/wt, and a difference between a regenerating zone catalyst concentration phase temperature (1) and the reaction zone outlet temperature (2) is in a range of 5 to 150.degree. C. According to the fluid catalytic cracking process, an amount of dry gases generated by the thermal cracking of the heavy fraction oil can be lessened while a yield of light fraction olefins can be enhanced.

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