Refrigeration – Cryogenic treatment of gas or gas mixture – Liquefaction
Patent
1995-06-07
1996-07-23
Capossela, Ronald C.
Refrigeration
Cryogenic treatment of gas or gas mixture
Liquefaction
F25J 100
Patent
active
055378277
ABSTRACT:
A process for the liquefaction of natural gas having a pressure above atmospheric pressure, is disclosed in which a feed gas is cooled to sequentially lower temperatures, by passing the gas through a plurality of cooling stages, in heat exchange with at least three refrigerants, until the gas is substantially completely condensed in the last of the cooling stages. The pressure of the feed gas is reduced to near atmospheric pressure during the cooling of the feed gas by the use of hydraulic expanders which extract work during pressure reduction. Additionally, pressure reduction of the refrigerants within the refrigerant cycles is performed by similar hydraulic expanders. The work extracted by said hydraulic expanders is used to provide power to the liquefaction process, such as by helping to power compressors or pumps used in the liquefaction process.
REFERENCES:
patent: 4172711 (1979-10-01), Bailey
patent: 4456459 (1984-06-01), Brundige, Jr.
patent: 4923492 (1990-05-01), Hewitt
patent: 4970867 (1990-11-01), Herron et al.
patent: 5291736 (1994-03-01), Paradowski
patent: 5363655 (1994-11-01), Kikkawa et al.
patent: 5473900 (1995-12-01), Low
Barber et al (literature), "Optimized cascade process works well for LNG plans", Oil and Gas Journal, pp. 88-92 Turboexpanders (literature), pp. 13-40 to 13-47.
Andress Donald L.
Houser Clarence G.
Low William R.
Yates Douglas E.
Capossela Ronald C.
Cross Ryan N.
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