针对LNG接收站BOG处理系统选择较多的问题,研究计算了不同工况下BOG的产生量。应用模拟计算与理论分析结合的方式,分别研究了BOG的处理量、再冷凝器的压力对BOG处理能耗的影响。提出增设冷换器的方式,降低BOG处理的能耗。研究结果表明:BOG处理的平均能耗随BOG处理量的增加而增大且趋于稳定;再冷凝器的压力对平均能耗影响较小且存在最优压力值使平均能耗降到最小。研究成果可以为新建LNG接收站BOG处理系统的选择提供依据。

According to the problem of more selection for boil-off gas processing system in LNG receiving terminals,the production of boil-off Gas under different working conditions is studied and calculated.The means of the combination for numerical calculation and theoretical research is used to analyze the effects of boil-off gas treatment capacity and the re-condenser pressure on energy consumption for boil-off gas treatment.On the above basis, the way of adding the heat exchanger is put forward, which reduces the energy consumption of boil-off gas treatment.The results show that the average energy consumption of boil-off gas treatment is increasing with the increase of boil-off gas treatment, tending to be stable. The re-condenser pressure has little effect on the average energy consumption,and there exists an optimal pressure value to minimize the average energy consumption.The calculation results of average energy consumption can provide a basis for the selection of boil-off gas processing system for new LNG receiving terminals.