Refrigeration – Processes – Circulating external gas
Patent
1993-03-15
1994-08-16
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62 24, F25J 304
Patent
active
053375696
ABSTRACT:
Process and installation for transferring a liquid, via a rising conduit (6, 9, 11, 12) provided with an expansion valve (7, 10, 13), from a first distillation column (2), operating at a first pressure, to equipment (3), particularly a second distillation column, operating at a pressure lower than the first pressure. There is injected into the rising conduit, downstream of the expansion valve, a lift gas available at a pressure greater than the pressure created by a column of liquid between the point of injection of the gas and the point of introduction of the liquid into the equipment (3). The lift gas is available at the pressure of the first distillation column (2) and is injected into the liquid in the rising column above the point of withdrawal of this liquid. There is used as lift gas a gas withdrawn from a point in the first column (2) and so chosen as not to modify substantially the composition of the transferred liquid, or a portion of the air feed to the installation can be used for this purpose.
REFERENCES:
patent: 3059440 (1962-10-01), Loporto
patent: 3217502 (1965-11-01), Keith, Jr.
patent: 3222878 (1965-12-01), Becker
patent: 4137056 (1979-01-01), Golovko
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patent: 4977746 (1990-12-01), Grenier et al.
patent: 5123249 (1992-06-01), Buttle
"Nuclear Instruments and Methods", A Cryostat for Ge(Li)-Detectors With Internal Liquid Circulation and a Swiveling Cold Finger, vol. 66, 1968, by C. M. Fleck et al. pp. 304-308.
Capossela Ronald C.
L'Air Liquide Societe Anonyme pour l'Etude et, l'Exploitation de
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