Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Patent
1981-10-29
1983-02-15
Chiesa, Richard L.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
208146, B01J 802, B01J 3502
Patent
active
043740944
ABSTRACT:
In a radial flow catalytic reactor, a gravity supported centerpipe is restrained from vertical upward movement due to thermal cycling of the catalyst and the reactor internals by forming the centerpipe to have uniform vertical and radial permeability in a frustoconical configuration. Gravity effect of the catalyst particles forming the bed act along the tapered side of the centerpipe. Additionally improved permeability to radial flow through the uniformly packed catalyst bed, independently of radial resistance to flow through the reactor due to pressure gradient between top and bottom of the vessel is achieved by compensation for differences in radial distance to the centerpipe from the upper portion to the lower portion of the catalyst bed by changes in the permeability of the tapered conical surface of the centerpipe. Uniformity of radial flow through the catalyst bed is assured by forming the conical portion of the centerpipe from rigid screen material so that reaction "dead" spots do not develop adjacent to the centerpipe.
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Chevron Research Company
Chiesa Richard L.
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