Apparatus and methods for gas-liquid separation

Gas-liquid separation comprising: a) feeding a product stream comprising a mixture of liquid and gaseous hydrocarbon products and water vapour from a Fischer-Tropsch reactor into a first vapour-liquid separator inside which the product stream is separated into a first liquid comprising a first cut o...

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Bibliographische Detailangaben
Hauptverfasser: Roger Kenneth Bence, Jay Simon Clarkson, Andrew James Coe
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Gas-liquid separation comprising: a) feeding a product stream comprising a mixture of liquid and gaseous hydrocarbon products and water vapour from a Fischer-Tropsch reactor into a first vapour-liquid separator inside which the product stream is separated into a first liquid comprising a first cut of the hydrocarbon products and a first gas stream comprising gaseous hydrocarbon products and water vapour; b) collecting the first liquid at a liquid outlet of the first vapour-liquid separator; c) discharging the first gas stream from a gas outlet of the first vapour-liquid separator and feeding the first gas stream through a first cooler to apply cooling to the first gas stream to condense a portion of the gaseous hydrocarbon products and water vapour to form a first cooled mixture; d) feeding the first cooled mixture from the first cooler into a second vapour-liquid separator inside which the first cooled mixture is separated into a second liquid comprising a second cut of the hydrocarbon products and water, and a second gas stream comprising any remainder of the hydrocarbon products and water vapour; e) collecting the second liquid at a liquid outlet of the second vapour-liquid separator; f) discharging the second gas stream from a gas outlet of the second vapour-liquid separator; g) feeding the second gas stream from the gas outlet of the second vapour-liquid separator through a second cooler to apply cooling to the second gas stream to condense a portion of the remainder of the hydrocarbon products and water vapour to form a second cooled mixture;h) feeding the second cooled mixture from the second cooler into a third vapour-liquid separator inside which the second cooled mixture is separated into a third liquid comprising a third cut of the hydrocarbon products and water, and a third gas stream; i) collecting the third liquid at a liquid outlet of the third vapour-liquid separator; and j) discharging the third gas stream from a gas outlet of the third vapour-liquid separator, wherein the method further comprises feeding the second liquid and the third liquid into a single decanter inside which the second liquid and the third liquid are separated into liquid hydrocarbon products and water.