F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
162/139
F25J 3/06 (2006.01) C01B 3/50 (2006.01)
Patent
CA 1174159
SEPARATION OF GAS MIXTURES BY PARTIAL CONDENSATION ABSTRACT In processes wherein the cold for the separation of a gas mixture at superatmospheric pressure by partial condensation at cryogenic temperatures is provided by subjecting the condensate to Joule-Thomson expansion and effecting heat exchange between the expanded condensate and uncondensed vapour, as returning streams, and the feed gas mixture, and wherein the pressure at which the expanded condensate is required to be delivered is so high that the sum of the enthalpies of said returning streams is not sufficiently in excess of the enthalpy of the feed gas mixture for at least part of the temperature range over which cooling is to be effected, a closed heat pump cycle is provided in which a compressed multi- component gaseous medium is condensed by heat exchange with said returning streams over a first temperature range and then expanded by Joule-Thomson expansion, and the expanded condensate is evaporated by heat exchange with the feed gas mixture over a lower temperature range than said first temperature range, and recycled for recompression.
387845
Ashton Gregory J.
Duckett Melvyn
Salisbury David R.
Goudreau Gage Dubuc
Petrocarbon Developments Limited
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