BOG处理工艺在液化天然气接收站中的应用

LNG接收站运行期间会产生蒸发气（BOG），使储罐压力处于不稳定状态，因此要对BOG进行处理。BOG处理工艺分为直接输出工艺和再冷凝工艺，由于再冷凝工艺能耗小、先进、合理，因此应用广泛。文中介绍了LNG接收站再冷凝工艺的工艺流程，其要点是采用BOG压缩机负荷调节、再冷凝器高压补气和调节气液比的方法来实现再冷凝器的液位控制，并使储罐压力和BOG处理系统都达到稳定状态。

BOG Process of LNG Terminal

There will be so much BOG in LNG terminal during operation. The existence of BOG in the tank will change the pressure to an unstable state. So,it is important to handle BOG. The BOG process is divided into a direct output process and a recondensation process. The recondensation process is more advanced, more rational and more energy-saving, So it is used more widely. The paper introduced the application of the recondensation process in LNG terminal. It is useful to adjust the BOG compressor loading, make up output NG and adjust the vapor-liquid ratio to control the level of the recondenser,thus making the tank pressure and BOG process stable.