Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element responds proportionally to a variable signal...
Patent
1981-05-28
1982-04-27
Garris, Bradley
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element responds proportionally to a variable signal...
138149, 406 14, 406 28, 406 30, 406193, 406195, 422112, 422144, 422219, 422223, B01J 400, B01J 818, F27B 1508
Patent
active
043270557
ABSTRACT:
The present invention is for a continuous system wherein spent catalyst is removed from a regeneration vessel, while fresh catalyst is added in order to maintain proper catalyst activity in a hydrocarbon processive system. The withdrawal of the spent catalyst must be achieved at a steady flow rate which is compatible with the introduction of fresh catalyst of the hydrocarbon processing system. This flow rate is controlled by a downstream pressure and venting control in the spent catalyst hopper stage acting in conjunction with a novel flow restriction zone in a discharge conduit.
REFERENCES:
patent: 3149924 (1964-09-01), Cross, Jr.
patent: 3475326 (1969-10-01), Luckenbach
patent: 3494858 (1970-02-01), Luckenbach
patent: 4063344 (1977-12-01), Jones et al.
patent: 4208214 (1980-06-01), Stein et al.
Luckenbach Edward C.
Worley Arthur C.
Exxon Research & Engineering Co.
Garris Bradley
Salzman Robert S.
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