Refrigeration – Processes – Circulating external gas
Patent
1993-07-19
1994-06-21
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62 20, F25J 300
Patent
active
053219520
ABSTRACT:
A process is disclosed for the purification of natural gas in which the reduction of the nitrogen content of a natural gas stream is achieved by a combination of absorption, purification, flashing, and reflux steps. More specifically, the process achieves the rejection of inert components such as nitrogen from hydrocarbon gas streams without operating in the cryogenic temperature range. The process uses a lean solvent to absorb the non-rejected components in a recovery zone of an absorber and uses a cooled light gas stream to purify the rich solvent in a purification zone of the absorber. The process can be employed to reject hydrogen and recover C.sub.3 +hydrocarbons from a dehydrogenation reaction zone integrated with an etherification zone for the production of ethers to improve recovery and lower operating costs.
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Capossela Ronald C.
McBride Thomas K.
Silverman Richard P.
Tolomei John G.
UOP
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