摘要
国内筹备建设的LNG中转站主要以液态外输为主,由于储罐、设备及管道系统的吸热等因素,站内将产生大量的蒸发气(以下称为BOG),且该BOG无法采用常规大型LNG接收站的再冷凝处理工艺。文章对LNG中转站的BOG的产生因素和计算方法进行了阐述;提出了LNG中转站产生BOG的可能工况组合,并结合实际工程案例,通过HYSYS软件进行了模拟计算;提出了4种有效的BOG处理方案,分别为管道外输、CNG外输、双级氮膨胀液化和混合冷剂液化4种方案,最终根据LNG中转站的外输特点,选择采用了氮膨胀液化回罐的处理方式。采用文中推荐的方法处理LNG中转站产生的BOG,既可以满足环保要求,也可以可降低中转站的运行、操作费用。
Most domestic LNG transfer stations focus on the liquid transportation. Due to the heat input and other factors such as tank, equipment and piping system, a large amount of boil-off gas （BOG） is generated in the transfer stations, which can not be treated by the recondensation process of the conventional large LNG terminal station. The calculation method of BOG generated in the LNG transfer station under each kind of factor was elaborated; the possible combinations of working conditions that may produce BOG in the transfer station were put forward, and the amount of BOG generated was simulated combined with the practical engineering case; 4 kinds of effective BOG treatment schemes were proposed. The most effective treatment of BOG can not only meet the requirements of environmental protection, but also reduce the costs of transfer station running and operation.
出处
《化学工程》
CAS
CSCD
北大核心
2013年第8期75-78,共4页
Chemical Engineering(China)
关键词
LNG中转站
液化天然气
BOG
外输方案
液化方案
LNG transfer station
liquefied natural gas
BOG
transportation scheme
liquefaction scheme
