Catalytic reaction chamber for gravity-flowing catalyst...

Details Catalytic reaction chamber for gravity-flowing catalyst... Catalytic reaction chamber for gravity-flowing catalyst...

C - Chemistry, Metallurgy

10

G

196/128

C10G 11/16 (2006.01)

Patent

CA 1104963

CATALYTIC REACTION CHAMBER FOR GRAVITY-FLOWING CATALYST PARTICLES ABSTRACT A catalytic reaction chamber for contacting a re- actant stream with catalyst particles which are disposed as an annular-form bed and are downwardly movable therethrough via gravity-flow. The annular bed is spaced between a cat- alyst-retaining screen and a perforated centerpipe. A plu- rality of vertically-positioned catalyst transfer, or with- drawal conduits are circumferentially-disposed substantially adjacent the outer surface of the centerpipe and extend the entire length of the catalyst bed. These contain a first plurality of apertures which face into the bed of catalyst particles and which are sized to permit catalyst particles to flow therethrough. Preferably, a second plurality of apertures is disposed substantially 180° opposite the first plurality of apertures, and sized to inhibit the flow of catalyst particles therethrough. The latter serve to conduct reactant stream vapors out of the transfer conduits into the perforated centerpipe and insure a hydrogen atmosphere sur- rounding the catalyst particles flowing therethrough.

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