Distillation process for multi-component feed stream

A process is disclosed to remove a high-volatility component, such as nitrogen, from a feed stream rich in methane to produce a product substantially free of the high-volatility component. The feed stream is expanded and fed to a phase separator which produces a vapor stream and a liquid stream. The...

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Bibliographische Detailangaben
Hauptverfasser:	E.T. COLE, B.T. STONE
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS LIQUEFIED PETROLEUM GAS LUBRICANTS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY MIXTURES BY PRESSURE AND COLD TREATMENT NATURAL GAS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRIGERATION OR COOLING SEPARATION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A process is disclosed to remove a high-volatility component, such as nitrogen, from a feed stream rich in methane to produce a product substantially free of the high-volatility component. The feed stream is expanded and fed to a phase separator which produces a vapor stream and a liquid stream. The vapor stream is enriched in the volatile component. The liquid stream, which is lean in the volatile component and rich in methane, is pumped to a higher pressure and heated to produce a pressurized liquefied product stream having a pressure sufficient for the product stream to be at or below its bubble point and having a temperature above about -112° C. (-170° F.).