Thermodynamic and environmental analyses of a novel closed loop regasification system integrating ORC and CO2 capture in floating storage regasification units

Regasification systems in Floating Storage Units (FSRUs) that use the steam generated by boilers as heat source (closed loop) liquefied natural gas (LNG) regasification process are less detrimental to marine environment than those seawater (open loop). Their drawback, however, lies significant increase fuel consumption and, thus, CO2 emissions. The present paper performs an energy, exergy and environmental analysis of a novel closed-loop system for FSRUs integrates organic Rankine cycle (ORC) post-combustion capture with 30 wt% aqueous solution monoethanolamine (MEA). LNG cold energy is utilised power generation through ORC well processes capture, compression, drying liquefaction. proposed able meet electrical demand FSRU without dual engines, while efficiency boiler flue gases exceeds 90%. Fuel cut 18% this comparison existing systems, increases 14%, emissions decrease approximately 75% compared open-loop commonly installed on board.