LNG PORTABLE STORAGE TANK

PROBLEM TO BE SOLVED: To reduce the pressure raising in an LNG tank during transportation by providing a heat exchanger in a paper layer in the upper part of the LNG tank and connecting a refrigerant feed mechanism to the heat exchanger to feed and circulate liquefied gas having a boiling point lowe...

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Bibliographische Detailangaben
1. Verfasser:	SAKURAI TAMIO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR BLASTING CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS HANDLING THIN OR FILAMENTARY MATERIAL HEATING LIGHTING MECHANICAL ENGINEERING PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING STORING OF DISTRIBUTING GASES OR LIQUIDS TRANSPORTING VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the pressure raising in an LNG tank during transportation by providing a heat exchanger in a paper layer in the upper part of the LNG tank and connecting a refrigerant feed mechanism to the heat exchanger to feed and circulate liquefied gas having a boiling point lower than that of the LNG as a refrigerant. SOLUTION: A heat exchanger 8 is provided in a paper layer 7 in the upper part of an LNG tank 2 and a refrigerant feed mechanism 9 is provided in the heat exchanger 8 so as to feed and circulate liquefied gas having a boiling point lower than that of the LNG as refrigerant. If the temperature of the paper layer 7 of the LNG tank increases higher than the set value during transportation, a controller 15 starts the feeding of liquid nitrogen. Then, extruded liquid nitrogen is fed and circulated in the heat exchanger 8 to absorb the heat from the paper layer 7 and be vaporized. The temperature of the paper layer 7 decreases along with it so as to liquefy boiloff gas, reduce the total amount of the boiloff gas, and reduce the pressure of the LNG tank 2.