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Title: Separation of gases by diffusion

Abstract

An apparatus is described for the separation of mixtures of gaseous or vaporous media by diffusion through a permeable membrane. The apparatus consists principally of a housing member having an elongated internal chamber dissected longitudinally by a permeable membrane. Means are provided for producing a pressure difference between opposite sides of the membrane to cause a flow of the media in the chamber therethrough. This pressure difference is alternated between opposite sides of the membrane to produce an oscillating flow through the membrane. Additional means is provided for producing flow parallel to the membrane in opposite directions on the two sides thereof and of the same frequency and in phase wlth the alternating pressure difference. The lighter molecules diffuse through the membrane more readily than the heavier molecules and the parallel flow effects a net transport of the lighter molecules in one direction and the heavier molecules in the opposite direction wlthin the chamber. By these means a concentration gradient along the chamber is established. (auth)

Inventors:
; ;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4092970
Patent Number(s):
2,964,124
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-15-008918
NSA Number:
NSA-15-008918
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; DIFFUSION; GASES; MEMBRANES; MOLECULES; PRESSURE; SEPARATION PROCESSES; TRANSPORT; VAPORS; FREQUENCY; GAS FLOW; INSTRUMENTS; MIXING; OSCILLATIONS; WEIGHT

Citation Formats

Peieris, R. E., Simon, F. E., and Arms, H. S. Separation of gases by diffusion. United States: N. p., 1960. Web.
Peieris, R. E., Simon, F. E., & Arms, H. S. Separation of gases by diffusion. United States.
Peieris, R. E., Simon, F. E., and Arms, H. S. Tue . "Separation of gases by diffusion". United States. https://www.osti.gov/servlets/purl/4092970.
@article{osti_4092970,
title = {Separation of gases by diffusion},
author = {Peieris, R. E. and Simon, F. E. and Arms, H. S.},
abstractNote = {An apparatus is described for the separation of mixtures of gaseous or vaporous media by diffusion through a permeable membrane. The apparatus consists principally of a housing member having an elongated internal chamber dissected longitudinally by a permeable membrane. Means are provided for producing a pressure difference between opposite sides of the membrane to cause a flow of the media in the chamber therethrough. This pressure difference is alternated between opposite sides of the membrane to produce an oscillating flow through the membrane. Additional means is provided for producing flow parallel to the membrane in opposite directions on the two sides thereof and of the same frequency and in phase wlth the alternating pressure difference. The lighter molecules diffuse through the membrane more readily than the heavier molecules and the parallel flow effects a net transport of the lighter molecules in one direction and the heavier molecules in the opposite direction wlthin the chamber. By these means a concentration gradient along the chamber is established. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {12}
}

Patent:

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