犍为LNG装置在管道压力能利用方面的实践

Utilization of pipeline pressure energy in Qianwei LNG plant

简要介绍了犍为LNG装置的工艺流程,详细阐述了该装置因管道压力能较高而具有的工艺技术特点。装置具有流程简单,制冷能耗低,液化率低等优点。探讨了影响天然气膨胀机制冷的主要因素,认为天然气膨胀机的级数、天然气中重烃的含量以及预冷会对制冷产生重要的影响。

The technological process of Qianwei LNG plant is briefly introduced.Because of the high pressure energy of pipeline,the LNG plant has the technology characteristics of simple technological process,low energy consumption of refrigeration,and low liquefied rate,etc.The main factors which influence the expander refrigeration of natural gas are discussed,and the effect series of natural gas expander,the content of heavy hydrocarbon in natural gas and precooling will have a significant effect on refrigeration.