Process for cracking hydrocarbon oils

Details Process for cracking hydrocarbon oils Process for cracking hydrocarbon oils

2004-10-15

2008-03-25

Caldarola, Glenn (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

C208S113000, C208S120050, C208S120100, C208S120150, C208S120250, C208S120300, C208S120350, C208S294000

Reexamination Certificate

active

07347930

ABSTRACT:
A novel process for cracking olefins including contacting a hydrocarbon oil with a catalyst in a riser reactor having multiple reaction zones under cracking reaction conditions; separating reaction products and the catalyst; regenerating at least a part of spent catalyst obtained, contacting a part of the regenerated catalyst with the hydrocarbon in the first reaction zone; contacting the other part of the spent catalyst and/or regenerated catalyst in at least one reaction zone after the first reaction zone with the products obtained in previous reaction zones.

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U.S. Appl. No. 10/949,298 to Long et al., filed Sep. 27, 2004.

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