Process for separating hydrocarbon gas constituents

Details Process for separating hydrocarbon gas constituents Process for separating hydrocarbon gas constituents

1986-04-01

1987-08-18

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 32, 62 42, F25J 302

Patent

active

046874992

ABSTRACT:
A process for separating natural gas constituents wherein a portion of the residue gas from the demethanizer column is cooled, expanded, partially condensed and recycled to the top of this column. This alters the chemical equilibrium in the column causing the lighter methane to vaporize and separate from the heavier constituents such as ethane, propane, etc. The lighter methane constituent rises and is removed from the top of the demethanizer column while the heavier constituents fall and are removed from the bottom of this column.

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