Multiple zone catalytic cracking of hydrocarbons

Details Multiple zone catalytic cracking of hydrocarbons Multiple zone catalytic cracking of hydrocarbons

1991-08-15

1992-10-13

Pal, Asok

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 75, 208 72, 208 73, 208 77, 208 67, 208 49, 208113, 208120, C10G 5102, C10G 5104, C10G 1102

Patent

active

051548186

ABSTRACT:
Methods for the fluidized catalytic cracking of plural hydrocarbon feedstocks in a riser reactor are disclosed. The processes generally comprises contacting a relatively light hydrocarbon feedstock in a first reaction zone with a first catalyst stream comprising spent catalyst, contacting a relatively heavy hydrocarbon feedstock in a second reaction zone with a second catalyst stream comprising freshly regenerated catalyst, and introducing at least a portion of the effluent from the first reaction zone into the second reaction zone. The first reaction zone and the second reaction zone preferably comprise first and second riser reaction zones, respectively.

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