Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1987-06-08
1989-02-21
Castel, Benoit
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
423350, 427213, 222152, F27B 1509
Patent
active
048063177
ABSTRACT:
An apparatus for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.
REFERENCES:
patent: 4207360 (1980-06-01), Padovani
patent: 4299338 (1981-11-01), Jain et al.
patent: 4444811 (1984-04-01), Hsu et al.
patent: 4684513 (1987-08-01), Iya
Blank Wesley D.
Boone James E.
Farritor Robert E.
Owens David W.
Castel Benoit
Ethyl Corporation
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