Nitrogen rejection process incorporating a serpentine heat...

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

F - Mech Eng,Light,Heat,Weapons

25

J

162/114

F25J 3/02 (2006.01) F25J 3/00 (2006.01)

Patent

CA 1221616

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.

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