Cryogenic rectification system for producing higher purity heliu

Details Cryogenic rectification system for producing higher purity heliu Cryogenic rectification system for producing higher purity heliu

1997-08-01

1998-06-30

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62923, F25J 100

Patent

active

057717141

ABSTRACT:
The production of higher purity helium wherein a feed comprising helium, nitrogen and hydrocarbons is processed in a system comprising two columns operating at different pressure levels, with the product helium produced in the higher pressure column and nitrogen and hydrocarbons cycled to the lower pressure column.

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Rathmann et al., Linde Reports on Science and Technology No. 34, 1982.
Pahade et al., Thermal Integrated of Processes to Recover Helium, Energy Process, vol. 8, No. 4, Dec., 1988 pp. 196-200.
Handley et al., Process Requirements and Enhanced Economics of Helium Recovery from Natural Gas, Soc. of Petroleum Engineers SPE 24292, Apr. 13, 1992 pp. 11-20.

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