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http://dx.doi.org/10.7842/kigas.2021.25.1.7

The Experimental Study of Insulation Structure for BOG Re-liquefaction Drum  

Kim, Ik-Soo (NK CO., LTD., R&D CENTER)
Jung, Young-Jun (NK CO., LTD., R&D CENTER)
Publication Information
Journal of the Korean Institute of Gas / v.25, no.1, 2021 , pp. 7-13 More about this Journal
Abstract
The re-liquefaction drum is a product that installed spray nozzles at the top to directly spray overcooled LNG into evaporative gas and installed demistors to facilitate gas separation, which was developed to increase the re-liquidity efficiency of small scale re-liquefaction facilities. In the hydrostatic test of the drum, no leakage occurred even at a pressure of 1.5 times the design pressure, but during the BOR(Boil Off Rate) test, the bolt loosening occurred due to contraction and expansion by temperature change. For the continued use of the product, insulation construction on flange connections was developed to enable detachment and attachment, and the comparison of heat load with existing insulation confirmed that it was very small compared to the inlet flow rate in the drum.
Keywords
re-liquefaction drum; bolt loosening; flange connection; insulation construction; heat load;
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  • Reference
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