再液化系统在LNG船上的实际应用

LNG船存在的突出问题是LNG吸收外界热量挥发而造成货损,而利用再液化装置将挥发的低温天然气(Boil Off Gas,简称BOG)重新冷凝液化并输送回液货舱是目前LNG船处理BOG的主要方式之一。文中首先介绍了再液化原理及分类;然后对全部再液化系统的设备组成、工作流程及操作模式在LNG船上的应用进行分析;最后,展望了未来LNG船安装再液化系统的应用趋势。

Application of reliquefaction system on LNG ships

The prominent problem of the liqueifed natural gas (LNG) ships is that the volatilization loss of LNG occurs by the absorbing external heat. One of the main solution is to make the volatilized boil off gas (BOG) re-condensed and transferred back to the cargo tanks by a reliquefaction system. Firstly, this paper introduces the principle and classiifcation of reliquefaction. Then, it analyzes the equipment components, working process and operation mode of the all-reliquefaction system applied on the LNG ships. It ifnally presents the application of the reliquefaction system on the LNG ships in future.