Multi stage selective catalytic cracking process and a...

Details Multi stage selective catalytic cracking process and a... Multi stage selective catalytic cracking process and a...

2006-04-18

2006-04-18

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S075000, C208S077000, C208S078000, C422S141000, C422S145000, C422S198000, C422S214000

Reexamination Certificate

active

07029571

ABSTRACT:
According to this invention, there is provided a process and apparatus for catalytic cracking of various petroleum based heavy feed stocks in the presence of solid zeolite catalyst and high pore size acidic components for selective bottom cracking and mixtures thereof, in multiple riser type continuously circulating fluidized bed reactors operated at different severities to produce high yield of middle distillates, in the range of 50–65 wt % of fresh feed.

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