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Edition and Publication:
< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation
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Du Tonglin
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Tang Xiaoyong,Pu Liming
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2015 Vol.2

    Optimization of BOG Recondensation Process at LNG Receiving Terminals
    Author of the article:Wang Wenkai, Li Zhaoci; Gai Xiaofeng; Wang Xiukang
    Author's Workplace：1.Beijing Key Laboratory for Urban Oil and Gas Distribution Technology, China University of Petroleum;2.PetroChina Jiangsu LNG Limited Company;3.CNOOC Fujian Natural Gas Co., Ltd.,
    Key Words：LNG terminal; BOG vapor; Recondensation process; Compressor; Low pressure pump; Operating parameters; Power consumption; Optimization analysis
    Abstract：Currently, BOG recondensation process is generally adopted at most LNG receiving terminals in China for BOG vapor treatment. Aiming at the issues of material ratio and energy consumption affected by operating parameters of BOG recondensation system at Jiangsu LNG terminal, HYSYS is applied to simulate the operating parameters of the process system in normal working conditions. On this basis, only changed are the outlet pressures of compressor or low pressure pump and applied are actual results to draw variation trend chart and analyze effect of relevant operating parameters on the recondensation process and power consumption of pressurization equipment system. In the premise of meeting the process requirement and minimum throughput, through reasonable reduction of the operating pressure of BOG recondenser, the theoretical minimum 590 kPa(a) can be determined quantitatively and power consumption of pressurization eguipment can be saved by up to 4.675%, which can achieve considerable benefit. Meanwhile, clarified is a fuzzy definition that the recondenser operating pressure shall be 0.6-0.9 MPa(a), which can provide a reasonable basis for other LNG terminals in recondenser operating pressure selection.

     


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