Refrigeration – Cryogenic treatment of gas or gas mixture – Liquefaction
Patent
1999-03-02
2000-10-31
Doerrler, William
Refrigeration
Cryogenic treatment of gas or gas mixture
Liquefaction
62614, 62616, F25J 100
Patent
active
061384739
ABSTRACT:
A station for dispensing a gas, in particular nitrogen, under a dispensing pressure, includes a line (10) for gas inlet under an inlet high pressure, a line (14) for dispensing the gas under a lower dispensing pressure, and a device (16) for reducing the pressure of the gas to be dispensed from the inlet pressure to the dispensing pressure. The pressure-reducing device (16) includes a machine for pressure reduction with external work production. The station includes upstream of the pressure-reducing device (16), a conduit (18) for dividing the inlet gas into a fraction to be dispensed and a complementary fraction, downstream of the conduit (18), a device (20) for liquefaction of the complementary fraction of the inlet gas that includes a heat exchanger (26) for exchanging heat with the reduced-pressure fraction of the inlet gas, and a reservoir (40) for collecting the liquefied complementary fraction.
REFERENCES:
patent: 2873180 (1959-02-01), Gilbert
patent: 3383873 (1968-05-01), Becker
patent: 3608323 (1971-09-01), Salama
patent: 3990256 (1976-11-01), May et al.
patent: 5799505 (1998-09-01), Bonaquist et al.
patent: 5836173 (1998-11-01), Lynch et al.
Doerrler William
L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation de
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