石油与天然气化工2025，Vol.54Issue(3)：49-56,8.DOI:10.3969/j.issn.1007-3426.2025.03.007
LNG接收站BOG再冷凝工艺模拟优化
Simulation and optimization of the BOG recondensation process in the LNG receiving station
摘要
Abstract
Objective In the major systems of liquefied natural gas(LNG)receiving stations,the safe operation and energy saving of boil-off gas(BOG)treatment process systems are analyzed and studied.Method The existing recondensation process and the second-order compression recondensation process of the receiving station were compared and analyzed.Based on the second-order compression recondensation process,the secondary precooling optimization was proposed.With the actual operation data of a domestic receiving station and the use of ASPEN-HYSYS software for model establishment and simulation analysis,different simulation models were established for different working conditions.Result The improved second-order compression secondary precooling recondensation process could be effectively optimized for different working conditions.The research results were combined with the data of an actual receiving station for simulation verification.The data results showed that the total energy consumption of the optimized process was reduced by 606.2 kW compared with the original process,and the energy saving rate was 14.14%.Conclusion The BOG temperature and the outlet pressure of the BOG compressor have the greatest influence on the recondensation process,and then the optimization method is obtained,that is,the specific enthalpy of the compressor outlet is decreased by reducing the outlet pressure of the compressor,and the pre-cooling process is used to offset the effect of the material ratio increase caused by reducing the outlet pressure of the compressor.Finally,the purpose of reducing the total energy consumption is achieved.关键词
LNG接收站/BOG处理系统/再冷凝工艺/BOG压缩机出口压力/天然气/预冷工艺/优化/能耗Key words
LNG receiving station/BOG processing system/recondensation process/outlet pressure of BOG compressor/natural gas/pre-cooling process/optimization/energy consumption引用本文复制引用
赵厅,孙东旭,张瑛,胡本源,谢飞,吴明..LNG接收站BOG再冷凝工艺模拟优化[J].石油与天然气化工,2025,54(3):49-56,8.基金项目
国家自然科学基金面上项目"南海干湿交替环境中多因素耦合作用下X80管线钢应力腐蚀行为与机理研究"(52274062) （52274062）
辽宁省博士科研启动基金"天然气掺氢输送X80管线钢焊缝缺陷处脆性开裂行为与机理研究"(2013-BS-198) （2013-BS-198）
辽宁省教育厅基本科研项目"高钢级输氢管线钢焊缝区脆性断裂行为与调控机制"(LJKMZ20220734) （LJKMZ20220734）
国家自然科学基金青年基金项目"X80管线钢环焊缝缺陷处多轴应力腐蚀开裂的跨尺度演变机制"(52404058) （52404058）
