Mixed Refrigerant Liquefaction Process
    32.
    发明申请
    Mixed Refrigerant Liquefaction Process 审中-公开
    混合制冷剂液化过程

    公开(公告)号:US20070227185A1

    公开(公告)日:2007-10-04

    申请号:US11579129

    申请日:2005-06-06

    IPC分类号: F25J1/00

    摘要: A method for liquefying a natural gas stream is provided. In one embodiment, the method includes placing a mixed component refrigerant in a heat exchange area with a process stream; separating the mixed component refrigerant at one or more pressure levels to produce a refrigerant vapor and a refrigerant liquid; bypassing the refrigerant vapor around the heat exchange area to a compression unit; and passing the refrigerant liquid to the heat exchange area. In another embodiment, the method further includes partially evaporating the refrigerant liquid stream within the heat exchange area to retain a liquid fraction of at least 1% by weight.

    摘要翻译: 提供了一种液化天然气流的方法。 在一个实施方案中,该方法包括将混合组分制冷剂置于与处理流的热交换区域中; 在一个或多个压力水平下分离混合组分制冷剂以产生制冷剂蒸气和制冷剂液体; 绕过热交换区域周围的制冷剂蒸气到压缩单元; 并将制冷剂液体通入热交换区域。 在另一个实施方案中,该方法还包括部分蒸发热交换区域内的制冷剂液体流以保持至少1重量%的液体部分。

    Hybrid gas liquefaction cycle with multiple expanders
    33.
    发明授权
    Hybrid gas liquefaction cycle with multiple expanders 有权
    混合气体液化循环与多个膨胀机

    公开(公告)号:US07127914B2

    公开(公告)日:2006-10-31

    申请号:US10664336

    申请日:2003-09-17

    IPC分类号: F25J1/00 F25B7/00

    摘要: Method for gas liquefaction comprising cooling a feed gas by a first refrigeration system in a first heat exchange zone and withdrawing a substantially liquefied stream therefrom, further cooling the substantially liquefied stream by indirect heat exchange with one or more work-expanded refrigerant streams in a second heat exchange zone, and withdrawing therefrom a further cooled, substantially liquefied stream. At least one of the one or more work-expanded refrigerant streams is provided by compressing one or more refrigerant gases to provide a compressed refrigerant stream, cooling all or a portion of the compressed refrigerant stream in a third heat exchange zone to provide a cooled, compressed refrigerant stream, and work expanding the cooled, compressed refrigerant stream to provide one of the one or more work-expanded refrigerant streams. The flow rate of a work-expanded refrigerant stream in the second heat exchange zone typically is less than the total flow rate of one or more work-expanded refrigerant streams in the third heat exchange zone.

    摘要翻译: 用于气体液化的方法,包括通过第一热交换区域中的第一制冷系统冷却进料气体并从其中排出基本上液化的物流,通过在一秒钟内与一个或多个工作膨胀的制冷剂流间接热交换进一步冷却基本上液化的流 热交换区,并从其中抽出进一步冷却的基本上液化的物流。 一个或多个工作膨胀的制冷剂流中的至少一个通过压缩一个或多个制冷剂气体以提供压缩的制冷剂流来提供,在第三热交换区域中冷却压缩的制冷剂流的全部或一部分,以提供冷却的, 压缩的制冷剂流,并且对冷却的压缩的制冷剂流进行扩展,以提供一个或多个工作膨胀的制冷剂流中的一个。 第二热交换区中的工作膨胀的制冷剂流的流量通常小于第三热交换区中的一个或多个工作膨胀的制冷剂流的总流量。

    Integrated air separation process and apparatus
    34.
    发明申请
    Integrated air separation process and apparatus 失效
    集成空气分离过程和装置

    公开(公告)号:US20040089021A1

    公开(公告)日:2004-05-13

    申请号:US10656473

    申请日:2003-09-05

    发明人: Patrick Le Bot

    IPC分类号: F25J001/00 F25J003/00

    摘要: In a process for separating air in a system comprising a gas turbine, including a compressor (1), a combustor (5) and an expander (17), said expander being coupled to the compressor, a natural gas conversion unit (23) and an air separation unit (20), air is compressed in the compressor, a first part (3) of the air is sent to the combustor and a second part (7) of the air is sent to the air separation unit, oxygen enriched gas (21) is sent from the air separation unit to the natural gas conversion unit, compressed nitrogen enriched gas (16) is sent upstream of the expander, a first stream (33) of natural gas is sent to the natural gas conversion unit, a second stream of natural gas (35) is sent to a natural gas liquefaction unit and work produced by the expander is used to operate a cycle compressor of a refrigeration cycle of the natural gas liquefaction unit.

    摘要翻译: 在包括燃气轮机的系统中的空气分离过程中,包括压缩机(1),燃烧器(5)和膨胀机(17),所述膨胀机与压缩机相连,天然气转换单元(23)和 空气分离单元(20),空气在压缩机中被压缩,空气的第一部分(3)被送到燃烧器,空气的第二部分(7)被送到空气分离单元,富氧气体 (21)从空气分离单元送出到天然气转换单元,在膨胀机的上游向压缩的富氮气体(16)送出,将天然气的第一流(33)送入天然气转换单元 将第二天然气流(35)送入天然气液化装置,由膨胀机产生的作业用于操作天然气液化装置的制冷循环的循环压缩机。

    Single mixed refrigerant gas liquefaction process
    37.
    发明授权
    Single mixed refrigerant gas liquefaction process 有权
    单一混合制冷剂气体液化过程

    公开(公告)号:US06347531B1

    公开(公告)日:2002-02-19

    申请号:US09415636

    申请日:1999-10-12

    IPC分类号: F25J300

    摘要: A method of gas liquefaction wherein the refrigeration to cool and liquefy an essentially water-free feed gas is provided by a single recirculating mixed refrigerant cycle in which refrigeration is provided by the vaporization of two mixed refrigerant streams of different compositions at a lower and higher pressure levels respectively. A lower pressure level vaporizing refrigerant cools the feed gas stream in a first cooling zone and a higher pressure level vaporizing refrigerant further cools and condenses the cooled gas in a second cooling zone to provide the final liquid product. The lower pressure level vaporizing refrigerant is provided by one or more liquids obtained by ambient cooling of compressed mixed refrigerant vapor. The vaporized lower pressure level refrigerant can be returned to the refrigerant compressor at a temperature below ambient, without further warming, and this cool refrigerant is compressed and combined with the vaporized higher pressure level refrigerant, which is returned at about ambient temperature.

    摘要翻译: 一种气体液化方法,其中用于冷却和液化基本上无水的进料气体的制冷是通过单个循环混合制冷剂循环提供的,其中通过在较低和较高压力下蒸发不同组成的两种混合制冷剂流来提供制冷 级别。 较低压力水平的蒸发制冷剂在第一冷却区域中冷却进料气流,并且较高压力水平的蒸发制冷剂进一步冷却并冷凝第二冷却区中的冷却气体以提供最终的液体产物。 低压级蒸发制冷剂由通过压缩混合制冷剂蒸汽的环境冷却而获得的一种或多种液体提供。 蒸发的低压级制冷剂可以在低于环境温度的温度下返回到制冷剂压缩机,而不会进一步升温,并且该冷却的制冷剂被压缩并与在大约环境温度下返回的蒸发的高压级制冷剂组合。

    Dual mixed refrigerant cycle for gas liquefaction
    38.
    发明授权
    Dual mixed refrigerant cycle for gas liquefaction 有权
    双重混合制冷剂循环用于气体液化

    公开(公告)号:US6119479A

    公开(公告)日:2000-09-19

    申请号:US208562

    申请日:1998-12-09

    摘要: Process and system for liquefying a pressurized gas, especially natural gas. The process is carried out in two heat exchangers, and cooling for each heat exchanger is provided by a mixed refrigerant which is vaporized at a single essentially constant pressure. Feed precooling, low level refrigerant precooling, and high level liquid refrigerant subcooling are effected in one of the heat exchanger against low level refrigerant vaporizing at a single essentially constant pressure. The process and system of the invention are especially well-suited for installation on ships, barges, and offshore platforms.

    摘要翻译: 用于液化加压气体,特别是天然气的方法和系统。 该方法在两个热交换器中进行,每个热交换器的冷却由在单个基本恒定的压力下汽化的混合制冷剂提供。 进料预冷却,低水平制冷剂预冷却和高液位制冷剂过冷却在一个热交换器中进行,以低压制冷剂在单个基本恒定的压力下蒸发。 本发明的方法和系统特别适用于船舶,驳船和海上平台上的安装。

    Method and device for liquefying a natural gas without phase separation
of the coolant mixtures
    40.
    发明授权
    Method and device for liquefying a natural gas without phase separation of the coolant mixtures 失效
    用于液化天然气而不相分离冷却剂混合物的方法和装置

    公开(公告)号:US6105389A

    公开(公告)日:2000-08-22

    申请号:US113517

    申请日:1998-07-10

    IPC分类号: F25J1/00 F25J1/02

    摘要: A method allowing a gaseous mixture such as a natural gas to be liquefied by using a first compressed coolant mixture M.sub.1, at least partially condensed by cooling with the aid of an external coolant fluid, then subcooled, expanded, and vaporized, and a second compressed coolant mixture, cooled with the aid of an external coolant fluid, then cooled by heat exchange with the first coolant mixture M.sub.1 during the first cooling stage (I), after which it is in an at least partially condensed state. The second partially condensed coolant mixture is sent without phase separation to a second cooling stage (II) where it is fully condensed, expanded, and vaporized at at least two pressure levels. The subcooled natural gas is expanded to form the LNG produced.

    摘要翻译: 通过使用第一压缩冷却剂混合物M1使气态混合物(例如天然气)液化的方法通过外部冷却剂流体的冷却至少部分冷凝,然后被过冷,膨胀和蒸发,并且第二压缩 冷却剂混合物,借助于外部冷却剂流体冷却,然后在第一冷却阶段(I)期间通过与第一冷却剂混合物M1的热交换而冷却,之后其处于至少部分冷凝状态。 将第二部分冷凝的冷却剂混合物不经相分离送入第二冷却段(II),在第二冷却段(II)中,其在至少两个压力水平下完全冷凝,膨胀和蒸发。 过冷的天然气被膨胀以形成所生产的LNG。