Gas separation: processes – With control responsive to sensed condition – Temperature sensed
Patent
1993-09-08
1995-07-04
Spitzer, Robert
Gas separation: processes
With control responsive to sensed condition
Temperature sensed
95 17, 95 18, 95 41, 95 45, 95 54, 95117, 95141, 96 4, 96136, 55267, B01D 5322
Patent
active
054296625
ABSTRACT:
A separation of gas by permeation, comprising the steps of and the apparatus for compressing a gaseous mixture to be separated at a first temperature (Ta) in a compressor (2), cooling to a second temperature (To) the compressed mixture to condense condensable impurities in the compressed gaseous mixture, purifying the compressed gaseous mixture of condensable and/or adsorbable impurities at a third temperature (T.sub.1) greater than the second temperature (T.sub.0) and passing the purified gaseous mixture into a gaseous permeation unit comprising at least one membrane module to obtain at least one production gas. The third temperature (T.sub.1) is so regulated that it will not be less than a first predetermined value. The second temperature (To) is greater than the first temperature (Ta) by a value comprised between 1.degree. and 5.degree. C., the first value being not less than 20.degree. C.
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L'Air Liquide Societe Anonyme pour l'Etude et, l'Exploitation de
Spitzer Robert
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