Optimize LNG boil-off gas systems for regasification terminals
Depending on LNG composition, N2 content and plant operating mode, an operating pressure of 7 barg to 8 barg was found by the study to be the optimum pressure range.
Boil-off gas (BOG) generation is an inherent part of natural gas liquefaction, transportation and gasification. It varies depending on site temperature, climate condition, integrity of insulation and plant operating mode.
Optimization of a BOG system focuses on the optimum operating pressure of the BOG handling system, which affects BOG compressor configuration, process and flare systems design, operating philosophy, startup procedures, line sizes and plant performance. In this examination, different case studies were performed to minimize hydrocarbon loss, flaring and energy consumption.
To generalize the results, two extreme compositions (lean and rich) were considered in the case stud
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