Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Patent
1990-03-28
1991-10-01
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
422142, 422145, B01J 808
Patent
active
050532049
ABSTRACT:
A catalytic cracking process and apparatus operates with multiple feed injection points to a riser reactor with several enlarged regions. An elutriable catalyst mixture is used, comprising a conventionally sized cracking catalyst and a faster settling, shape selective additive cracking catalyst. Straight run naphtha, and a light, H.sub.2 -rich aliphatic stream are added to the base of a riser reactor. A resid feed is added higher up in the riser, with a gas oil and recycled heavy cycle oil and naphtha streams added even higher up in the riser. The riser has an elutriating base, and an elutriating upper portion, which increase residence time of the shape selective zeolite additive relative to the conventionally sized cracking catalyst.
REFERENCES:
patent: 3821103 (1974-06-01), Owen
patent: 4717466 (1988-01-01), Herbst et al.
patent: 4820493 (1989-04-01), Haddad et al.
patent: 4826586 (1989-05-01), Herbst et al.
Herbst Joseph A.
Owen Hartley
Schipper Paul H.
Griffith Rebekah A.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Stone Richard D.
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