介绍了国内液化装置的现状以及液化装置两种主要流程 (低压液化循环与中压液化循环 )的特点 ,并对这两种流程的一次性投资、部机性能、能耗及性价比等进行了比较 The current status of the domestic liquefaction plant and the characteristics of the two main processes of the liquefaction plant (low-pressure liquefaction cycle and medium-pressure liquefaction cycle) were introduced, and the one-time investment, machine performance, energy consumption, and cost performance of the two processes were compared.