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    • 7. 发明专利
    • Apparatus for reliquefying bog and method for removing nitrogen from reliquefied bog
    • 用于消除BOG的装置和从可靠的BOG中除去氮的方法
    • JP2010013594A
    • 2010-01-21
    • JP2008176697
    • 2008-07-07
    • Tokyo Gas Co Ltd東京瓦斯株式会社
    • SHIRAKAWA YUSONE YOICHIEBATO KUNIHIKO
    • C10L3/06F17C13/00F25J1/00F25J3/08
    • F25J3/061F25J3/0635F25J3/066F25J2210/62F25J2210/90F25J2270/904
    • PROBLEM TO BE SOLVED: To provide an apparatus for reliquefying BOG (boil-off gas), in which nitrogen gas can be separated/removed efficiently from the BOG, the amount of LPG, which is used for adjusting calorie, to be mixed can be reduced effectively and nitrogen gas can be removed by a separation and removal unit as small-sized as possible and to provide a method for removing nitrogen from the reliquefied BOG. SOLUTION: The apparatus 100 for reliquefying BOG is constituted so that the first BOG to be generated in an LNG storage tank 1 is introduced into a heat exchanger 2, withdrawn LNG is also introduced into the heat exchanger 2 from the LNG storage tank 1, the first BOG introduced into the heat exchanger 2 is cooled and reliquefied by the withdrawn LNG and the reliquefied BOG is sent to a vaporizer 3. A re-vaporization vessel 5 is arranged between the heat exchanger 2 and the vaporizer 3 so that second BOG is generated in the re-vaporization vessel 5 and sent to a nitrogen removal unit 6 through a line L3 to remove nitrogen gas in the second BOG. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供一种用于重新补充BOG(蒸发气体)的装置,其中氮气可以从BOG有效地分离/去除,用于调节卡路里的LPG的量为 可以有效地降低混合,并且可以通过尽可能小的分离和去除单元去除氮气,并且提供从再液化的BOG中除去氮的方法。 解决方案:用于再液化BOG的装置100构成为使得在LNG储罐1中产生的第一BOG被引入到热交换器2中,抽出的LNG也从LNG储罐引入热交换器2 如图1所示,引入热交换器2的第一BOG被排出的LNG冷却并再液化,再液化的BOG被送到蒸发器3.再次蒸发容器5设置在热交换器2和蒸发器3之间, 在再蒸发容器5中产生BOG,并通过管线L3送至除氮单元6,以除去第二BOG中的氮气。 版权所有(C)2010,JPO&INPIT