混合制冷剂天然气的液化工艺是目前应用最广泛的流程,本文重点分析天然气液化装置中常用的混合制冷剂液化循环的几种基本工艺,依据天然气和混合制冷剂物性的特点,选择PR(Peng-Robinson)方程来计算这两种混合物的相平衡性。利用ASPEN软件研究了混合制冷剂流程以及混合制冷剂组分对液化过程的影响。 Mixed liquefied natural gas liquefaction process is currently the most widely used process, this paper focuses on several commonly used liquefied liquefaction plant liquefaction liquefaction cycle of several basic processes, based on natural gas and mixed refrigerant properties, select PR (Peng- Robinson equation to calculate the phase balance of the two mixtures. ASPEN software was used to study the effects of mixed refrigerant flow and mixed refrigerant components on liquefaction process.