TREATMENT METHOD FOR VAPORIZED GAS GENERATED IN LIQUEFIED NATURAL GAS STORAGE TANK

PURPOSE:To eliminate a precooling device for vaporizing gas (hereinafter called BOG). CONSTITUTION:BOG is drawn out and cooling is carried out in two stages by means of LNG to effect re-liquefaction, and BOG is mixed in LNG flowing to a gasifier 6. Meanwhile, a part of LNG imparting heat to BOG for...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAYAMA OSAMU, HANAMURE MASAKAZU, MIYATA YOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS 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 STORING OF DISTRIBUTING GASES OR LIQUIDS VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To eliminate a precooling device for vaporizing gas (hereinafter called BOG). CONSTITUTION:BOG is drawn out and cooling is carried out in two stages by means of LNG to effect re-liquefaction, and BOG is mixed in LNG flowing to a gasifier 6. Meanwhile, a part of LNG imparting heat to BOG for gasification is joined with a delivery line 12 and delivered to the consumption side or utilized for a heat source for increasing the temperature of liquefied natural gas delivered to a liquid-liquid heat-conditioning device. Since a temperature difference between BOG and LNG at a plate fin type heat-exchanger 5 is considered to be a value within 50 deg.C at designing, a precooling device 8 is eliminated and capacity and an operation cost of a gasifier 23 for increasing the temperature of the liquid-liquid heat-conditioning device can be reduced.