Thermodynamic-Analysis-Based Design and Operation for Boil-Off Gas Flare Minimization at LNG Receiving Terminals

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• 作者：Chaowei Liu ; Jian Zhang ; Qiang Xu ; John L. Gossage
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2010
• 出版时间：August 18, 2010
• 年：2010
• 卷：49
• 期：16
• 页码：7412-7420
• 全文大小：386K
• 年卷期：v.49,no.16(August 18, 2010)
• ISSN：1520-5045

文摘

The LNG (liquefied natural gas) receiving terminal is an important component of the entire LNG value chain. The handling of unloading BOG (boil-off gas) during LNG regasification at LNG receiving terminals significantly influences the BOG flare emission and energy consumption. In this work, thermodynamic-analysis-based design and operations are simultaneously considered to recover BOG with the minimum total energy consumption, a goal of which is to provide a cost-effective flare minimization strategy at LNG receiving terminals. A rigorous simulation-based optimization model and its solution algorithm are developed based on an LNG regasification superstructure. Case studies are used to demonstrate the efficacy of the developed methodology. The presented general optimization model and thermodynamic analysis also provide fundamental understandings of the LNG regasification process that are valuable for industrial applications.