Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Patent
1989-10-26
1990-09-25
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
422216, 422218, 422239, B01J 812
Patent
active
049591983
ABSTRACT:
Method and apparatus for effecting contact of a gas with light particles of solid matter, where the particles are retained within particle retention screens to form a bed of particles and the particles move downward in plug flow by means of gravity. When the particles are light, that is, of relatively small size and low density, the velocity of the gas may be sufficiently high that downward movement of particles is hindered by the horizontal forces exerted on the particles by the flowing gas. This invention provides that gas flows through the bed of particles in a downwardly sloping direction instead of in a horizontal direction, so that the force exerted on a particle has a horizontal component and a downward vertical component. The vertical component of the force resulting from gas flow, along with the gravity force on a particle, is sufficient to overcome the frictional resistance to downward movement of a particle which results from the horizontal component of the flowing gas force.
REFERENCES:
patent: 4167553 (1979-09-01), Persico et al.
patent: 4214878 (1980-07-01), Weiss
patent: 4372920 (1983-02-01), Zardi
patent: 4374094 (1983-02-01), Farnham
patent: 4788819 (1988-12-01), Henkel
McBride Thomas K.
Muir Gregory R.
Tolomei John G.
UOP
Warden Robert J.
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