Riser disengager with suspended catalyst separation zone

Details Riser disengager with suspended catalyst separation zone Riser disengager with suspended catalyst separation zone

1991-11-13

1994-03-01

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208152, 208163, 208164, 208113, 208176, 208155, C10G 3500

Patent

active

052904300

ABSTRACT:
This FCC process suspends a catalyst and a riser proximate or above the riser cyclone inlets at a density that is higher than the flowing density in the riser. The suspended catalyst provides a disengagement zone that enhances the separation of catalyst from product vapors. The riser operates in a manner that prevents any discharge of catalyst from its end. The arrangement also provides a convenient method for venting stripping vapors into a closed reactor cyclone system.

REFERENCES:
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patent: 4792437 (1988-12-01), Hettinger, Jr.
patent: 5055177 (1991-10-01), Haddad et al.
patent: 5141625 (1992-08-01), Lomas

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