| 摘要 |
PROBLEM TO BE SOLVED: To equalize the concentration of sulfur components in gas-phase liquefied gas by suppressing a concentration increase thereof while dispensing with work for collecting residuals in a vessel. SOLUTION: The liquefied gas supply device comprises the vessel 3 for storing liquefied gas, a liquid takeout pipeline 7 having one end opening communicating with the inside bottom of the vessel and the other end located outside the vessel, an evaporator 9 connected at its heated fluid flow path inlet side to the other end of the liquid takeout pipeline 7, a gas pipeline 11 connected to the heated fluid flow path outlet side of the evaporator 9 for guiding the heated and vaporized gas-phase liquefied gas into the vessel 3 at its gas-phase portion 13 on the upper side of the highest liquid level of the vessel, and a gas supply pipeline 12 connected to the gas-phase portion 13 of the vessel 3 for taking vaporized gas out of the gas-phase portion 13. The liquid take-out pipeline 7 is used for taking out the gas-phase liquefied gas in the vessel 3 together with a portion on the bottom of the vessel which includes residuals having higher concentration of sulfur components than other portions in a conventional liquefied gas supply device and for vaporizing it with the evaporator 9. COPYRIGHT: (C)2006,JPO&NCIPI
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