Method and apparatus for treating boil-off gas in an LNG carrier having a reliquefaction plant, and LNG carrier having said apparatus for treating boil-off gas
    31.
    发明公开
    Method and apparatus for treating boil-off gas in an LNG carrier having a reliquefaction plant, and LNG carrier having said apparatus for treating boil-off gas 审中-公开
    用于与再液化系统和LNG油轮与此设备在LNG油轮处理蒸发气体的蒸发气体的处理方法和装置

    公开(公告)号:EP2003389A2

    公开(公告)日:2008-12-17

    申请号:EP07017100.4

    申请日:2007-08-31

    IPC分类号: F17C13/00

    摘要: Disclosed are a method and an apparatus for treating boil-off gas generated in an LNG storage tank of an LNG carrier for transporting LNG in a cryogenic liquid state, the LNG carrier having a boil-off gas reliquefaction plant, wherein an amount of boil-off gas corresponding to a treatment capacity of the reliquefaction plant among the total amount of boil-off gas generated during the voyage of the LNG carrier is discharged from the LNG storage tank and reliquefied by the reliquefaction plant. The boil-off gas treating method and apparatus can maintain an amount of boil-off gas discharged from an LNG storage tank at a constant level by storing in the LNG storage tank, instead of discharging and burning, surplus boil-off gas which has not been returned to the LNG storage tank through the reliquefaction plant among the total amount of boil-off gas generated in the LNG storage tank, and can prevent waste of boil-off gas and save energy by allowing an internal pressure of the LNG storage tank to be increased.

    摘要翻译: 本发明公开了用于治疗LNG运输工具的LNG储罐中产生的蒸发气体用于低温液体状态输送LNG的方法和装置的植物,具有蒸发气体再液化,worin在boil-的量的LNG运输工具 气体对应于再液化设备的LNG运输工具航行期间产生的蒸发气体的总量之间的处理能力从LNG存储罐中排出,并通过再液化装置再液化。 的蒸发气体处理的方法和装置可以保持在LNG储罐中存储,而不是放电和燃烧,剩余的蒸发气体处理不当哪达在恒定水平从LNG存储罐中排出的蒸发气体的 被返回到通过在LNG储罐中产生蒸发气体的总量之间的再液化计划LNG储罐,并且可以通过允许LNG储罐的内部压力防止蒸发气体的浪费和节约能源 而增加。