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The preparation of calcium superoxide in a flowing gas stream and fluidized bedSuperoxides can be used as sources of chemically stored oxygen in emergency breathing apparatus. The work reported here describes the use of a low-pressure nitrogen gas sweep through the reactant bed, for temperature control and water vapor removal. For a given set of gas temperature, bed thickness, and reaction time values, the highest purity calcium superoxide, Ca(O2)2, was obtained at the highest space velocity of the nitrogen gas sweep. The purity of the product was further increased by flow conditions that resulted in the fluidization of the reactant bed. However, scale-up of the low-pressure fluidized bed process was limited to the formation of agglomerates of reactant particles, which hindered thermal control by the flowing gas stream. A radiofrequency flow discharge inside the reaction chamber prevented agglomeration, presumably by dissipation of the static charges on the fluidized particles.
Document ID
19800059024
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wood, P. C.
(San Jose State Univ. CA, United States)
Ballou, E. V.
(San Jose State Univ. CA, United States)
Spitze, L. A.
(San Jose State University San Jose, Calif., United States)
Wydeven, T.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
July 1, 1980
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
ASME PAPER 80-ENAS-18
Meeting Information
Meeting: Intersociety Environmental Systems Conference
Location: San Diego, CA
Start Date: July 14, 1980
End Date: July 17, 1980
Sponsors: American Society of Mechanical Engineers
Accession Number
80A43194
Distribution Limits
Public
Copyright
Other

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