Method of and system for liquefying a gas with low boiling temperature
    2.
    发明授权
    Method of and system for liquefying a gas with low boiling temperature 失效
    液化低沸点气体的方法和系统

    公开(公告)号:US4339253A

    公开(公告)日:1982-07-13

    申请号:US214698

    申请日:1980-12-09

    IPC分类号: F25J1/00 F25J1/02

    摘要: A process of and apparatus for liquefying a dry gas with low boiling point in a first circuit through heat exchange with a main refrigerating fluid in a second circuit itself pre-cooled to its at least partial liquefaction through heat exchange with an auxiliary refrigerating fluid in a third circuit, wherein, for a same amount of treated products, the required total compression input power for the refrigerating fluids is reduced by performing in said third circuit an intermediate condensation between the two last compression stages followed by a phase separation, the gaseous phase being compressed to a high pressure in the last compression stage whereas the liquid phase is compressed to a high pressure by a pump and recycled to a cryogenic heat exchanger for cooling the gas initially in the moist state thereby at least partially drying same.

    摘要翻译: 一种用于在第一回路中液化低沸点的干燥气体的方法和装置,其通过与第二回路中的主冷冻流体进行热交换,其本身通过与辅助冷冻流体的热交换进行热交换而预冷却至其部分液化 其中,对于相同量的处理产品,通过在所述第三回路中执行两个最后压缩级之间的相位分离之后的中间冷凝,然后进行相分离,所述冷却流体的所需总压缩输入功率被减小 在最后压缩阶段被压缩至高压,而液相通过泵压缩至高压,并再循环至低温热交换器,以最初在潮湿状态下冷却气体,从而至少部分干燥。

    Liquefaction process and apparatus
    6.
    发明授权
    Liquefaction process and apparatus 失效
    液化过程和装置

    公开(公告)号:US06446465B1

    公开(公告)日:2002-09-10

    申请号:US09951725

    申请日:2001-09-14

    IPC分类号: F25J100

    摘要: Apparatus for liquefying natural gas, comprising a series of heat exchangers for cooling the natural gas in countercurrent heat exchange relationship with a refrigerant, compression means for compressing the refrigerant, expansion means for isentropically expanding at least two separate streams of the compressed refrigerant, said expanded streams of refrigerant communicating with a cool end of a respective one of the heat exchangers, and a precooling refrigeration system for precooling the natural gas to a temperature below 0° C. before it is fed to the series of heat exchangers, and for precooling the compressed refrigerant discharged from a warm end of the series of heat exchangers to a temperature below 0° C. before it is fed back into the series of heat exchangers or to the expansion means.

    摘要翻译: 用于液化天然气的装置,包括一系列用于冷却与制冷剂逆流热交换的天然气的热交换器,用于压缩制冷剂的压缩装置,用于等离子体膨胀压缩制冷剂的至少两个分离流的膨胀装置,所述膨胀装置 与相应的一个热交换器的冷端连通的制冷剂流,以及用于将天然气预先冷却至低于0℃的温度的预冷却制冷系统,然后将其送入该系列热交换器,并且用于预冷却 在从一系列热交换器的暖端排出的压缩制冷剂在被反馈到一系列热交换器或膨胀装置之前到低于0℃的温度。

    Liquefaction Method and System
    10.
    发明申请
    Liquefaction Method and System 有权
    液化方法与系统

    公开(公告)号:US20100122551A1

    公开(公告)日:2010-05-20

    申请号:US12272909

    申请日:2008-11-18

    IPC分类号: F25J1/00

    摘要: A method for liquefaction using a closed loop refrigeration system, the method comprising the steps of (a) compressing a gaseous refrigerant stream in at least one compressor; (b) cooling the compressed gaseous refrigerant stream in a first heat exchanger; (c) expanding at least a first portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger in a first expander to provide a first expanded gaseous refrigerant stream; and (d) cooling and substantially liquefying a feed gas stream to form a substantially liquefied feed gas stream in a second heat exchanger through indirect heat exchange against at least a first portion of the first expanded gaseous refrigerant stream from the first expander, wherein the first expanded gaseous refrigerant stream exiting the first expander is substantially vapor.

    摘要翻译: 一种使用闭环制冷系统进行液化的方法,所述方法包括以下步骤:(a)在至少一个压缩机中压缩气态制冷剂流; (b)在第一热交换器中冷却压缩的气体制冷剂流; (c)在第一膨胀机中使来自第一热交换器的冷却的压缩气态制冷剂流的至少第一部分膨胀以提供第一膨胀气态制冷剂流; 和(d)冷却并基本上液化进料气流,以在第二热交换器中通过与来自第一膨胀器的第一膨胀气态制冷剂流的至少第一部分的间接热交换而形成基本液化的进料气流,其中第一 离开第一膨胀机的膨胀的气态制冷剂流是基本上蒸气的。