METHOD FOR SEPARATING A FRACTION RICH IN C2+ FROM LIQUEFIED NATURAL GAS

METHOD FOR SEPARATING A FRACTION RICH IN C2+ FROM LIQUEFIED NATURAL GAS

A process and apparatus for separating a fraction rich in C2+ from liquefied natural gas (LNG) is disclosed. In an embodiment, partial evaporation of the liquefied natural gas occurs in a heat exchanger. The partially evaporated natural gas is separated into a first gas fraction rich in C1 and a fir...

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Hauptverfasser: SAPPER, Rainer, BAUER, Heinz, FRANKE, Hubert
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
MIXTURES BY PRESSURE AND COLD TREATMENT
REFRIGERATION OR COOLING
WEAPONS
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creator SAPPER, Rainer
BAUER, Heinz
FRANKE, Hubert
description A process and apparatus for separating a fraction rich in C2+ from liquefied natural gas (LNG) is disclosed. In an embodiment, partial evaporation of the liquefied natural gas occurs in a heat exchanger. The partially evaporated natural gas is separated into a first gas fraction rich in C1 and a first liquid fraction rich in C2+. In a separation column, rectification separation of the first liquid fraction rich in C2+ into a second gas fraction rich in C1 and a second liquid fraction rich in C2+ occurs. The first gas fraction rich in C1 is re-liquefied in the heat exchanger. At least one sub-stream of the re-liquefied gas fraction rich in C1 is fed as a reflux to the rectification separation.
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In an embodiment, partial evaporation of the liquefied natural gas occurs in a heat exchanger. The partially evaporated natural gas is separated into a first gas fraction rich in C1 and a first liquid fraction rich in C2+. In a separation column, rectification separation of the first liquid fraction rich in C2+ into a second gas fraction rich in C1 and a second liquid fraction rich in C2+ occurs. The first gas fraction rich in C1 is re-liquefied in the heat exchanger. 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In an embodiment, partial evaporation of the liquefied natural gas occurs in a heat exchanger. The partially evaporated natural gas is separated into a first gas fraction rich in C1 and a first liquid fraction rich in C2+. In a separation column, rectification separation of the first liquid fraction rich in C2+ into a second gas fraction rich in C1 and a second liquid fraction rich in C2+ occurs. The first gas fraction rich in C1 is re-liquefied in the heat exchanger. At least one sub-stream of the re-liquefied gas fraction rich in C1 is fed as a reflux to the rectification separation.</abstract><oa>free_for_read</oa></addata></record>
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subjects BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
MIXTURES BY PRESSURE AND COLD TREATMENT
REFRIGERATION OR COOLING
WEAPONS
title METHOD FOR SEPARATING A FRACTION RICH IN C2+ FROM LIQUEFIED NATURAL GAS
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