Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural parallel stages of chemical conversion
Patent
1984-09-10
1988-11-22
Metz, Andrew H.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural parallel stages of chemical conversion
208 86, 208 89, 208 92, 208155, 208164, 502 43, C10G 5106, C10G 5508
Patent
active
047864001
ABSTRACT:
A dual riser cracking operation in combination with sequential stages of catalyst regeneration in which the second regeneration stage is a riser regenerator is described in combination with deep solvent deasphalting a vacuum resid. The deasphalted resid is subjected to hydrogenation treatment prior to cracking thereof in a riser cracking zone in admixture with a heavy vacuum gas oil which may or may not be hydrogenated prior to cracking thereof. Lower boiling fractions of the crude oil are subjected to catalytic cracking in a separate riser cracking zone. Partially regenerated catalyst of dense fluid bed regeneration may be employed in the heavy oil feed riser cracking operation charged with deasphalted oil. The partially regenerated catalyst may be used alone or in combination with more completely regenerated catalyst of the riser regeneration operation.
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McFarlane Anthony
Metz Andrew H.
Willson, Jr. Richard C.
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