October 2004

Gas Processing-LNG

Optimize LNG vaporizers

Consider these guidelines to predict the performance of open rack vaporizers during normal and abnormal conditions

Dharmadhikari, S., Paragon Litwin

At regasification terminals, the liquefied natural gas (LNG) vaporizer is a critical piece of equipment. Vaporization of LNG occurs above its critical point. Thus, predicting the performance of the vaporizer during normal and abnormal operating conditions becomes a difficult task. Currently, no reliable method is available from published literature. The presented guidelines provide insight toward the basic design of an LNG import terminal located in Europe. Models are used to predict behavior of the system at various process conditions. A second key task addressed is quantifying the required flowrate for the vaporizer during a relief event. The presented example addresses the relief scenari

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