FLBT에서 발생되는 BOG재액화에 대한 연구

Abstract

The BOG (Boil off Gas) re-liquefaction process for the FLBT (Floating LNG Bunkering Terminal) requires compact and safety deign. The N2 expander process is well known as a simple process and it uses un-burnt refrigerant, so it’s suitablefor the BOG re-liquefaction process. The composition and amount of BOG were calculated for this process analysis. Based on the FLBT operating schedule, the BOG re-liquefaction capacity was calculated. Single and dual expander processes were analyzed for the BOG re-liquefaction process. The purpose of process improvement is to increase the liquefaction efficiency using BOG feed gas boosting and heat recovery. The key design parameters were deducted from the optimization. The single N2 expander process is more suitable for BOG re-liquefaction of FLBT.