| 摘要 |
PROBLEM TO BE SOLVED: To provide a low temperature liquefied gas tank which inhibits nitrogen concentration from becoming high in a boil-off gas (BOG) by a simple device configuration and thereby inhibits increase of the manufacturing costs and the operation costs.SOLUTION: A low temperature liquefied gas tank 1 includes: a storage tank 2 for storing a low temperature liquefied gas 3; and a re-liquefaction facility 6 which re-liquefies a boil-off gas occurring in the storage tank 2. The low temperature liquefied gas tank 1 includes return means which returns the re-liquefied boil-off gas re-liquefied by the re-liquefaction facility 6 to the storage tank 2. The return means includes a distributor 16 which is disposed below a liquid surface 3a of the low temperature liquefied gas 3 stored in the storage tank 2 and jets the re-liquefied boil-off gas into the low temperature liquefied gas 3. |
