Catalytic reaction chamber for gravity-flowing catalyst particle

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

1977-08-05

1979-02-27

Scovronek, Joseph

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including solid, extended surface, fluid contact reaction...

208165, 208168, 422218, 422219, B01J 812, C10G 3512

Patent

active

041416902

ABSTRACT:
A catalytic reaction chamber for contacting a reactant 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 catalyst-retaining screen and a perforated centerpipe. A plurality of vertically-positioned catalyst-transfer, or withdrawal, 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. A second plurality of apertures is disposed substantially 180.degree. 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 surrounding the catalyst particles flowing therethrough, thus to prevent so-called "pinning" of the catalyst.

REFERENCES:
patent: 2416165 (1947-02-01), Evans
patent: 2546634 (1951-03-01), Evans
patent: 3706536 (1972-12-01), Greenwood et al.

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