Refrigeration – Processes – Circulating external gas
Patent
1992-07-20
1994-01-04
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62 39, F25J 302
Patent
active
052750035
ABSTRACT:
The present invention relates to a process producing large quantities of liquid product via the cryogenic distillation of air wherein at least a portion of the refrigeration needs of the process is provided by expansion of the feed air. In particular, the present invention is an improved method to meet the liquid nitrogen requirements of the process and comprises elevating the discharge pressure of the nitrogen recycle compressor.
REFERENCES:
patent: 3605422 (1971-09-01), Pryor et al.
patent: 4152130 (1979-03-01), Theobald
patent: 4705548 (1987-11-01), Agrawal
patent: 4894076 (1990-01-01), Dobracki et al.
patent: 5006137 (1991-04-01), Agrawal et al.
patent: 5006139 (1991-04-01), Agrawal et al.
Agrawal Rakesh
Woodward Donald W.
Xu Jianguo
Air Products and Chemicals Inc.
Capossela Ronald C.
Marsh William F.
Simmons James C.
Wolff Robert J.
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