The single mixed refrigerant (SMR) process operates with only one mixed refrigerant to pre-cool, liquefy, sub-cool natural gas. The SMR process consists of compressors, heat exchangers, coolers, valves, phase separators and common headers. The operating conditions include the flow rate, pressure, temperature, and refrigerant composition.
In this study, the optimal operating conditions for SMR process, which is suitable for LNG FPSO, were determined by considering the power efficiency based on variation of feed gas compositions. Aspen HYSYS was utilized to obtain the optimal operating conditions.
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