Nitrogen rejection process incorporating a serpentine heat excha

Details Nitrogen rejection process incorporating a serpentine heat excha Nitrogen rejection process incorporating a serpentine heat excha

1983-03-21

1984-06-19

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 30, 62 31, 62 34, 62 39, F25J 102

Patent

active

044551584

ABSTRACT:
A method is disclosed for cooling a multicomponent gas stream containing variable amounts of the components by passing the gas stream through a heat exchange relationship with a fluid coolant stream so that carry-up of the condensed phase is maintained without condensed phase backmixing over the compositional range of the multicomponent gas stream. The gas stream is cooled by passing it through a cold-end up heat exchanger having a serpentine pathway for the multicomponent gas stream comprising a series of horizontal passes separated by horizontal dividers and alternatingly connected by turnaround passes at each end, the cross-sectional area of at least one horizontal pass nearer the cold-end being less than the cross-sectional area of a horizontal pass nearer the warm-end. The method is particularly applicable to cooling a natural gas feed stream having a variable nitrogen content in a nitrogen rejection process.

REFERENCES:
patent: 2869835 (1959-01-01), Butt
patent: 2940271 (1960-06-01), Jackson
patent: 3225824 (1965-12-01), Wartenberg
patent: 3397460 (1965-10-01), Hall
patent: 3731736 (1973-05-01), Fernandes
patent: 3907032 (1975-09-01), DeGroote et al.
patent: 4128410 (1978-12-01), Bacon
patent: 4201263 (1978-05-01), Anderson
patent: 4282927 (1981-08-01), Simmons

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