Refrigeration – Processes – Circulating external gas
Patent
1988-05-23
1989-03-21
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
55 74, F25J 300
Patent
active
048139882
ABSTRACT:
This invention relates to a process for the cryogenic separation of oxygen-containing mixtures to produce an enriched product whereby oxygen concentrations greater than 21% by volume are achieved in the process via passing streams of liquid and vapor countercurrently through a mass transfer zone which contains packing elements fabricated from a material having a thickness of less than about 1 millimeter, having a copper concentration of at least about 30% by weight and a heat of combustion of less than 1.0 Kcal/g, thereby avoiding the risk of flammability.
REFERENCES:
"Code of Practice for the Design and Operation of Centrifugal Liquid Oxygen Pumps", Industrial Gases Committee, IGC Document, 11/82.
"Fire Tests on Centrifugal Pumps for Liquid Oxygen", Cryogenics, Jun. 1970, by: Bauer et al.
"Fire Tests on Centrifugal Pumps for Liquid Oxygen-Part 2", Cryogenics, Dec. 1971, by: Bauer et al.
Bennett Douglas L.
Ludwig Keith A.
Patrylak Andrew J.
Zabrenski John
Air Products and Chemicals Inc.
Capossela Ronald C.
Jones II Willard
Marsh William F.
Simmons James C.
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