The operating conditions of natural gas expansion pre-cooling,mixed refrigerant(NGEMR)natural gas liquefaction process were optimized,and the optimum performance and the energy consumption level of the liquefaction process were obtained to assess the feasibility of the application of the liquefaction process in peak-shaving LNG plants in urban natural gas regulation stations.The simulation and optimization model of the NGE-MR natural gas liquefaction process which considers the specific power and uses the m...