Transcription of Natural Gas Liquefaction - Personal webpages at NTNU
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1 Classification: Internal Status: DraftNatural Gas LiquefactionTEP 10 Gas Processing and LNG Fall 2008 Jostein Pettersen2 Simplified LNG plant block diagramEndflashHHCE xtractionCH4/N2 FuelgasPower&heat23 Hammerfest LNG plant - block flow diagramSlugcatcherInlet facilities/MeteringCO2removalDe-hydratio nMercuryremovalNatural gasliquefactionLPG StorageCondensateStorageMEGR ecoveryCondensatetreatmentCO2dryingandre compressionNitrogenremovalFractionation( RefrigerantMake-up) fuel gassystemC1/ C2/ C3 Refrig.
8 15 Energy (fuel gas) use for liquefaction • Liquefaction process 2nd law (exergy) efficiency typically around 50% • Typical fuel use 5-10% of feed • Ambient temperature and feed gas pressure has large effect 0 5 10 15 20 0 2040 6080 100
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