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    GAS LIQUEFACTION SYSTEM AND METHODS
    2.
    发明申请
    GAS LIQUEFACTION SYSTEM AND METHODS 审中-公开
    气体液化系统和方法

    公开(公告)号：US20170059241A1

    公开(公告)日：2017-03-02

    申请号：US14985490

    申请日：2015-12-31

    Applicant: GE Oil & Gas, Inc.

    Inventor： David Allen Kennedy ,  Shukui Zhao

    IPC: F25J1/00

    CPC classification number: F25J1/0022 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0045 ,  F25J1/0202 ,  F25J1/0231 ,  F25J2220/64 ,  F25J2245/02 ,  F25J2245/90

    Abstract: A liquefaction system that is configured to use a single methane expander to provide primary refrigeration duty. The liquefaction system can include a heat exchanger and a fluid circuit coupled with the heat exchanger, the fluid circuit configured to circulate a process stream derived from an incoming feedstock of natural gas. The fluid circuit can comprise a methane expander coupled with the heat exchanger, a sub-cooling unit coupled with the methane expander, the sub-cooling unit configured to form a liquid natural gas (LNG) product from the process stream, and a first throttling device interposed between the heat exchanger and the sub-cooling unit. The methane expander and the first throttling device can be configured to expand the process stream to a process pressure that is between a first pressure of the incoming feedstock and a second pressure of the process that exits the sub-cooling unit.

    Abstract translation: 一种液化系统，其被配置为使用单个甲烷膨胀器来提供初级制冷功能。 液化系统可以包括热交换器和与热交换器耦合的流体回路，流体回路构造成循环来自天然气进料的工艺流。 流体回路可以包括与热交换器连接的甲烷膨胀器，与甲烷膨胀器联接的副冷却单元，该次冷却单元被配置成从工艺流形成液态天然气（LNG）产物，以及第一节流 设置在热交换器和副冷却单元之间。 甲烷膨胀器和第一节流装置可以被配置为将工艺流扩展到进入原料的第一压力和离开副冷却单元的过程的第二压力之间的过程压力。

    Liquefied natural gas production
    4.
    发明授权
    Liquefied natural gas production 有权
    液化天然气生产

    公开(公告)号：US08584488B2

    公开(公告)日：2013-11-19

    申请号：US12479061

    申请日：2009-06-05

    Applicant: John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

    Inventor： John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

    IPC: F25J3/00

    CPC classification number: F25J1/0231 ,  F25J1/0022 ,  F25J1/0035 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0045 ,  F25J1/0201 ,  F25J1/023 ,  F25J1/0232 ,  F25J3/0209 ,  F25J3/0233 ,  F25J2200/02 ,  F25J2200/72 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2215/02 ,  F25J2215/04 ,  F25J2220/64 ,  F25J2230/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2245/90 ,  F25J2260/10 ,  F25J2260/60 ,  F25J2270/02

    Abstract: A process and an apparatus for liquefying a portion of a natural gas stream are disclosed. The natural gas stream is cooled under pressure and divided into a first stream and a second stream. The first stream is cooled, expanded to an intermediate pressure, and supplied to a lower feed point on a distillation column. The second stream is expanded to the intermediate pressure and divided into two portions. One portion is cooled and then supplied to a mid-column feed point on the distillation column; the other portion is used to cool the first stream. The bottom product from this distillation column preferentially contains the majority of any hydrocarbons heavier than methane that would otherwise reduce the purity of the liquefied natural gas, so that the overhead vapor from the distillation column contains essentially only methane and lighter components. This overhead vapor is cooled and condensed, and a portion of the condensed stream is supplied to a top feed point on the distillation column to serve as reflux. A second portion of the condensed stream is expanded to low pressure to form the liquefied natural gas stream.

    Abstract translation: 公开了一种用于液化天然气流的一部分的方法和装置。 将天然气流在压力下冷却并分成第一流和第二流。 将第一流冷却，膨胀至中间压力，并供给到蒸馏塔上的下进料点。 将第二流扩展到中间压力并分成两部分。 一部分被冷却，然后供应到蒸馏塔上的中间塔进料点; 另一部分用于冷却第一流。 来自该蒸馏塔的底部产物优选含有比甲烷重的任何烃的大部分，否则会降低液化天然气的纯度，使得来自蒸馏塔的塔顶蒸气基本上仅含有甲烷和较轻组分。 将该塔顶蒸气冷却并冷凝，并将一部分冷凝流供应至蒸馏塔上的顶部进料点，以作为回流。 冷凝流的第二部分膨胀到低压以形成液化的天然气流。

    Dual mixed refrigerant cycle for gas liquefaction
    10.
    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

    Applicant: Mark Julian Roberts ,  Rakesh Agrawal

    Inventor： Mark Julian Roberts ,  Rakesh Agrawal

    IPC: F25J1/00 ,  F25B7/00 ,  F25J1/02 ,  F25J3/02 ,  F25J5/00

    CPC classification number: F25J1/0022 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0097 ,  F25J1/0214 ,  F25J1/0231 ,  F25J1/0267 ,  F25J1/0278 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2245/02

    Abstract: 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.

    Abstract translation: 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。

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