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级联式天然气液化方法,是最初的天然气液化形式,世界上首座基本负荷型级联式天然气液化装置建在阿尔及利亚。冷却介质依次为水、丙烷、乙烯和甲烷。该法因其流程复杂而被后来的丙烷预冷混合冷剂液化流程所代替,但有些小装置因该流程比较节能,仍有一定使用价值。本文介绍一种简单的级联式天然气液化流程HYSYS软件计算模型,供设计时参考。
Cascade natural gas liquefaction is the first form of natural gas liquefaction, and the world’s first baseload cascade liquefaction unit is based in Algeria. The cooling medium followed by water, propane, ethylene and methane. Because of its complicated process, the method was later replaced by a propane precooled refrigerant liquefaction process, but some smaller devices still have some use values due to the relatively energy saving process. This article describes a simple cascade natural gas liquefaction process HYSYS software calculation model for design time reference.