DEVICE AND METHOD FOR PROCESSING BOIL-OFF GAS IN LIQUEFIED GAS REGASIFICATION SYSTEM

    公开(公告)号:EP3733499A1

    公开(公告)日:2020-11-04

    申请号:EP18895880.5

    申请日:2018-12-28

    IPC分类号: B63B25/16 F17C9/02 F17C6/00

    摘要: The present invention relates to a device and a method for processing boil-off gas in a liquefied gas regasification system and, more particularly, to a device and a method for processing boil-off gas in a liquefied gas regasification system, wherein, even if there is no or little amount of regasified gas to be sent in a liquefied gas regasification system, boil-off gas can be reliquefied and recollected. A device for processing boil-off gas in a liquefied gas regasification system according to the present invention is a boil-off gas processing device for processing boil-off gas generated in a liquefied gas regasification system, the boil-off gas processing device comprising: a fuel compressor for compressing boil-off gas at a pressured required by a fuel consumer; a high-pressure compressor installed at the rear end of the fuel compressor in series with the fuel compressor so as to compress the low-pressure boil-off gas, which has been compressed by the fuel compressor, at a pressure required by a regasified gas consumer; a low-temperature heat exchanger for cooling the high-pressure boil-off gas compressed by the high-pressure compressor; a pressure-reducing device for reducing the pressure of the high-pressure boil-off gas, which has been cooled by the low-temperature heat exchanger, to the inner pressure of a liquefied gas storage tank for storing the liquefied gas; and a liquefied gas drum for separating flash gas generated by the pressure-reducing device in the pressure-reducing process, wherein liquid-state reliquefied boil-off gas separated from the liquefied gas drum is recollected into the liquefied gas storage tank.

    SYSTEM FOR CIRCULATING AIR THROUGH DOUBLE PIPES FOR SUPPLYING GAS AND AIR CIRCULATION METHOD USING SAME

    公开(公告)号:EP3689733A1

    公开(公告)日:2020-08-05

    申请号:EP17926889.1

    申请日:2017-09-26

    发明人: KIM, Jong Hyun

    摘要: The present invention relates to a system for circulating air through double pipes for supplying gas, the system including: double pipes connected to a gas handling device and supplied with gas; a gas supply unit for supplying gas to the gas handling device through an inner pipe of the double pipes; an air supply unit for supplying air through an outer pipe of the double pipes; and an air suctioning means for suctioning and circulating the air, which is supplied to the outer pipe by the air supply unit, by the introduction of a high pressure fluid. According to the present invention, rather than circulating air through the outer pipe of the double pipes by a fan as in the prior art, air can be circulated through the double pipes for gas supply by a simpler structure and more effective configuration.

    APPARATUS AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF VESSEL

    公开(公告)号:EP3521155A1

    公开(公告)日:2019-08-07

    申请号:EP16917802.7

    申请日:2016-10-17

    摘要: The present invention relates to an apparatus and a method for reliquefaction of boil-off gas generated in a liquefied gas storage tank applied to a vessel. The apparatus for reliquefaction of boil-off gas for a vessel, according to the present invention, which is a reliquefaction apparatus for reliquefying boil-off gas generated in a liquefied gas storage tank installed on a vessel, comprises: a compression unit for compressing the boil-off gas discharged from the storage tank; and a heat exchanger for heat-exchanging the compressed boil-off gas compressed by the compression unit with the boil-off gas discharged from the storage tank, wherein the apparatus for reliquefaction of boil-off gas for a vessel further comprises: a first expansion means for dividing the boil-off gas passing through the heat exchanger into at least two flows including a first flow and a second flow, and expanding the divided first flow; a first intercooler for cooling the second flow remaining after the division of the first flow by using the first flow expanded by the expansion means as a refrigerant; and a receiver for receiving a second flow having passed through the first intercooler, in which a downstream pressure of the compression unit is controlled by a flow discharged from the receiver.

    SHIP
    9.
    发明公开
    SHIP 审中-公开

    公开(公告)号:EP3305648A1

    公开(公告)日:2018-04-11

    申请号:EP16803588.9

    申请日:2016-04-05

    摘要: Disclosed is a ship including a storage tank for storing a liquefied gas. The ship includes: an boil-off gas heat exchanger installed on a downstream of the storage tank such that compressed boil-off gas (hereinafter, referred to as "first fluid") is made to exchange heat and cooled using boil-off gas, which is discharged from the storage tank, as a refrigerant; a compressor installed on a downstream of the boil-off gas heat exchanger so as to compress a part of the boil-off gas discharged from the storage tank; an extra compressor installed on a downstream of the boil-off gas heat exchanger in parallel with the compressor so as to compress the other part of the boil-off gas discharged from the storage tank; a refrigerant heat exchanger for additionally cooling the first fluid that is cooled by the boil-off gas heat exchanger; a refrigerant decompressing device which expands the second fluid, which is sent to the refrigerant heat exchanger (hereinafter, referred to as "second fluid") and cooled by the refrigerant heat exchanger, and then sends the second fluid back to the refrigerant heat exchanger; a first decompressing device which expands a part of the first fluid, which is cooled by the boil-off gas heat exchanger and by the refrigerant heat exchanger; and a third decompressing device which expands the remaining part of the first fluid, which is cooled by the boil-off gas heat exchanger and by the refrigerant heat exchanger, and sends the expanded remaining part of the first fluid back to the refrigerant heat exchanger, wherein the refrigerant heat exchanger heat-exchanges the first fluid to cool the first fluid, using the second fluid, a fluid expanded by the refrigerant decompressing device, and a fluid decompressed by the third decompressing device as a refrigerant; the first fluid is boil-off gas compressed by the compressor or is a confluent flow of the boil-off gas compressed by the compressor and the boil-off gas compressed by the extra compressor; and the second fluid is the boil-off gas compressed by the extra compressor or a confluent flow of the boil-off gas compressed by the compressor and the boil-off gas compressed by the extra compressor.

    摘要翻译: 公开了一种包括用于存储液化气的储罐的船。 该船舶包括:蒸发气体热交换器,该蒸发气体热交换器安装在储罐的下游,使得压缩蒸发气体(在下文中称为“第一流体”)被交换热量并使用蒸发气体被冷却, 作为制冷剂从储罐中排出; 压缩机,其安装在所述蒸发气体热交换器的下游,以压缩从所述储罐排出的蒸发气体的一部分; 额外的压缩机,安装在蒸发气体热交换器的与压缩机平行的下游,以压缩从储罐排出的另一部分蒸发气体; 制冷剂热交换器,用于额外冷却由蒸发气体热交换器冷却的第一流体; 制冷剂减压装置,该制冷剂减压装置使送到制冷剂热交换器的第二流体(以下称为“第二流体”)膨胀并被制冷剂热交换器冷却,然后将第二流体送回制冷剂热交换器; 第一减压装置,所述第一减压装置使由所述蒸发气体热交换器和所述制冷剂热交换器冷却的所述第一流体的一部分膨胀; 以及第三减压装置,所述第三减压装置使由所述蒸发气体热交换器和所述制冷剂热交换器冷却的所述第一流体的剩余部分膨胀,并且将膨胀的所述第一流体的剩余部分返回到所述制冷剂热交换器, 其中,所述制冷剂热交换器使用所述第二流体,由所述制冷剂减压装置膨胀的流体以及由所述第三减压装置减压的流体作为制冷剂,对所述第一流体进行热交换以冷却所述第一流体; 第一流体是由压缩机压缩的蒸发气体或是由压缩机压缩的蒸发气体和由额外压缩机压缩的蒸发气体的汇合流; 第二流体是由额外压缩机压缩的蒸发气体或由压缩机压缩的蒸发气体和由额外压缩机压缩的蒸发气体的汇合流。