Process Modelling and Validation of LNG Re-Liquefaction
Journal Title: GRD Journal for Engineering - Year 2018, Vol 3, Issue 2
Abstract
During transportation, there will be vaporization of LNG producing boil-off gas (BOG) and its re-liquefaction is required considering that large volume of BOG to be vented out. A cryogenic refrigeration cycle is utilized in order to re-liquefy the BOG and returns it to the cargo tank. Kapitza and claude are the usually used LNG re-liquefaction cycles. The developments in the processes adopted for the liquefaction of LNG boil-off will be addressed. Detailed study about the practical cycle like kapitza and claude cycle are performed. The experimental values of these re-liquefaction cycles at each state point are available. ASPEN HYSYS software is used to model these re-liquefaction cycles. Validating the ASPEN software result with experimental values and finding the error in the values of temperature and pressure at each state point. From this validation process it is found that simulation result using ASPEN software has very good agreement with experimental values.
Authors and Affiliations
Majo Davis, Ben Austin B Alapatt, Sreekanth Sarma P. V. , Aravind M, Kiran Mukund
Keywords
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