Feed gas drier precooling in mixed refrigerant natural gas lique

Details Feed gas drier precooling in mixed refrigerant natural gas lique Feed gas drier precooling in mixed refrigerant natural gas lique

1987-02-27

1988-07-05

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62335, 62434, F25J 300

Patent

active

047552000

ABSTRACT:
A closed loop single component, e.g. propane or Freon refrigerant, refrigeration cycle is added to a single or dual mixed refrigerant natural gas liquefaction process to precool the natural gas prior to adsorptive drying. By means of pressure control, the single component refrigerant temperature can be accurately controlled to ensure against hydrate formation in the natural gas feed and to maximize the precooling of the natural gas feed prior to drying. The addition of the single component refrigeration cycle overcomes the difficulty of controlling the precooling temperature which occurs when cooling by a multicomponent refrigerant, and thus improves plant reliability and minimizes the equipment sizes associated with the drying operation.

REFERENCES:
patent: 3300991 (1967-01-01), Carney
patent: 3418819 (1968-12-01), Grunberg et al.
patent: 3817046 (1974-06-01), Aoki et al.
patent: 3964891 (1976-06-01), Krieger
patent: 4112700 (1978-09-01), Forg
patent: 4274849 (1981-06-01), Garier et al.
patent: 4339253 (1982-07-01), Caetani et al.
patent: 4525185 (1985-06-01), Newton
"Liquefaction of Associated Gases", Paradowski & Sguera-(7th International Conference on LNG, May 15-19, 1983) (Abstract in English).

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