Dual mixed refrigerant cycle for gas liquefaction

Details Dual mixed refrigerant cycle for gas liquefaction Dual mixed refrigerant cycle for gas liquefaction

1998-12-09

2000-09-19

Doerrler, William

Refrigeration

Cryogenic treatment of gas or gas mixture

Liquefaction

62335, F25J 100, F25B 700

Patent

active

061194794

ABSTRACT:
Process and system for liquefying a pressurized gas, especially natural gas. The process is carried out in two heat exchangers, and cooling for each heat exchanger is provided by a mixed refrigerant which is vaporized at a single essentially constant pressure. Feed precooling, low level refrigerant precooling, and high level liquid refrigerant subcooling are effected in one of the heat exchanger against low level refrigerant vaporizing at a single essentially constant pressure. The process and system of the invention are especially well-suited for installation on ships, barges, and offshore platforms.

REFERENCES:
patent: 3763358 (1973-10-01), Gaumer et al.
patent: 4274849 (1981-06-01), Garier et al.
patent: 4911741 (1990-03-01), Davis et al.
patent: 5943881 (1999-08-01), Grenier

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