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Membrane Separation Of Nitrogen TetroxidePilot plant reduces N2O4 content to one-hundredth of inlet value. Permeable-membrane process removes nitrogen tetroxide from stream of nitrogen or helium gas. Operates in conjunction with scrubbing process removing N2O4 from He or N2 after He or N2 used as gas blanket in N2O4-storage tank. First stage of separator divided into two steps for efficiency. Permeate from second step of first stage and residue from second stage returned to inlet of first stage. Each module contains spiral-wound interleaved permeable membranes and spacer sheets.
Document ID
19930000101
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Castro, R. C. (Membrane Technology and Research, Inc.)
Kaschemekat, J. (Membrane Technology and Research, Inc.)
Helm, V. D. (Membrane Technology and Research, Inc.)
Shrock, P. H. (Membrane Technology and Research, Inc.)
Wijmans, J. G. (Membrane Technology and Research, Inc.)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 2
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
KSC-11519
Accession Number
93B10101
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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