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    CONTROLLING LIQUEFACTION OF NATURAL GAS
    1.
    发明申请
    CONTROLLING LIQUEFACTION OF NATURAL GAS 审中-公开
    控制天然气的液化

    公开(公告)号：WO2009013605A2

    公开(公告)日：2009-01-29

    申请号：PCT/IB2008/001924

    申请日：2008-07-17

    Applicant: AIR PRODUCTS AND CHEMICALS, INC. ,  SICINSKI, Michael, Andrew ,  JOHNSTON, Brian, Keith ,  TRAUTMANN, Scott, Robert ,  ROBERTS, Mark, Julian

    Inventor： SICINSKI, Michael, Andrew ,  JOHNSTON, Brian, Keith ,  TRAUTMANN, Scott, Robert ,  ROBERTS, Mark, Julian

    CPC classification number: F25J1/0249 ,  F25J1/0022 ,  F25J1/0055 ,  F25J1/0244 ,  F25J1/0292

    Abstract: A gas liquefaction process, especially for producing LNG, maintains product flow rate and temperature by controlling the refrigeration so that variation to reduce any difference between actual and required product temperatures is initiated before variation of the product flow rate to reduce any difference between actual and required flow rates. In preferred embodiments, the flow rate of one of a first refrigerant used to liquefy natural gas and a second refrigerant used to subcool the liquefied gas is controlled by a difference between actual and predetermined liquefied product flow rate and the flow rates of the other refrigerant and of the product are controlled by respective process temperature differences between actual and predetermined values.

    Abstract translation: 特别是用于生产LNG的气体液化过程通过控制制冷来保持产品流速和温度，从而在产品流量变化之前启动实际和所需产品温度之间的差异的变化，以减少实际和所需产品之间的差异 流量。 在优选实施例中，用于液化天然气的第一制冷剂和用于过冷液化气体的第二制冷剂之一的流量由实际和预定的液化产物流量与另一制冷剂的流量之间的差值 的产品由实际和预定值之间的相应工艺温度差控制。

    CONTROLLING LIQUEFACTION OF NATURAL GAS
    4.
    发明申请
    CONTROLLING LIQUEFACTION OF NATURAL GAS 审中-公开
    控制天然气的液化

    公开(公告)号：WO2009013605A3

    公开(公告)日：2011-04-21

    申请号：PCT/IB2008001924

    申请日：2008-07-17

    Applicant: AIR PROD & CHEM ,  SICINSKI MICHAEL ANDREW ,  JOHNSTON BRIAN KEITH ,  TRAUTMANN SCOTT ROBERT ,  ROBERTS MARK JULIAN

    Inventor： SICINSKI MICHAEL ANDREW ,  JOHNSTON BRIAN KEITH ,  TRAUTMANN SCOTT ROBERT ,  ROBERTS MARK JULIAN

    IPC: F25J1/02

    CPC classification number: F25J1/0249 ,  F25J1/0022 ,  F25J1/0055 ,  F25J1/0244 ,  F25J1/0292

    Abstract: A gas liquefaction process, especially for producing LNG, maintains product flow rate (116) and temperature (114) by controlling the refrigeration so that variation to reduce any difference between actual and required product temperatures is initiated before variation of the product flow rate to reduce any difference between actual and required flow rates. In preferred embodiments, the flow rate of one of a first refrigerant used to liquefy natural gas and a second refrigerant used to subcool the liquefied gas is controlled (132, 138) by a difference between actual and predetermined liquefied product flow rate and the flow rates of the other refrigerant and of the product are controlled (132, 138, 120) by respective process temperature differences between actual and predetermined values.

    Abstract translation: 特别是用于生产LNG的气体液化过程通过控制制冷来保持产品流速（116）和温度（114），从而在产品流量变化之前启动实际和所需产品温度之间的差异的变化，以减少 实际和所需流量之间的差异。 在优选实施例中，用于液化天然气的第一制冷剂和用于过冷液化气体的第二制冷剂之一的流量由实际和预定的液化产物流量与流量之间的差异来控制（132,138） 通过实际值和预定值之间的相应工艺温度差来控制其他制冷剂和产品（132,138,120）。

    NITROGEN REJECTION FROM CONDENSED NATURAL GAS
    7.
    发明申请
    NITROGEN REJECTION FROM CONDENSED NATURAL GAS 审中-公开
    来自冷凝天然气的氮气排放

    公开(公告)号：WO2004104143A1

    公开(公告)日：2004-12-02

    申请号：PCT/EP2004/002257

    申请日：2004-03-05

    Applicant: AIR PRODUCTS AND CHEMICALS, INC. ,  BROSTOW, Adam, Adrian ,  ROBERTS, Mark, Julian ,  SPILSBURY, Christopher, Geoffrey

    Inventor： BROSTOW, Adam, Adrian ,  ROBERTS, Mark, Julian ,  SPILSBURY, Christopher, Geoffrey

    IPC: C10L3/10

    CPC classification number: C10L3/10 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0257 ,  F25J2200/02 ,  F25J2200/50 ,  F25J2200/74 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2215/04 ,  F25J2240/12 ,  F25J2240/30 ,  F25J2270/04 ,  F25J2270/08 ,  F25J2270/12 ,  F25J2270/14 ,  F25J2270/42 ,  Y10S62/927

    Abstract: Method for the rejection of nitrogen from condensed natural gas which comprises (a) introducing the condensed natural gas into a distillation column at a first location therein, withdrawing a nitrogen-enriched overhead vapor stream from the distillation column, and withdrawing a purified liquefied natural gas stream from the bottom of the column; (b) introducing a cold reflux stream into the distillation column at a second location above the first locatino, wherein the refrigeration to provide the cold reflux stream is obtained by compressing and work expanding a refrigerant stream comprising nitrogen; and (c) either (1) cooling the purified liquefied natural gas stream or cooling the condensed natural gas stream or (2) cooling both the purified liquefied natural gas stream and the condensed natural gas stream, wherein refrigeration for (1) or (2) is obtained by compressing and work expanding the refrigerant stream comprising nitrogen. The refrigerant stream may comprise all or a portion of the nitrogen-rich vapor stream from the distillation column.

    Abstract translation: 从冷凝天然气中排除氮的方法，其包括：（a）在其第一位置将冷凝的天然气引入蒸馏塔，从蒸馏塔中取出富氮塔顶馏出物流，并将纯化的液化天然气 从塔的底部流出; （b）在第一位置上方的第二位置将冷的回流物流引入蒸馏塔，其中提供冷回流的制冷通过压缩和加工包含氮气的制冷剂流而获得; （c）（1）冷却纯化的液化天然气流或冷却冷凝的天然气流，或（2）冷却纯化的液化天然气流和冷凝的天然气流，其中（1）或（2 ）通过压缩和加工包含氮气的制冷剂流而工作获得。 制冷剂流可以包括来自蒸馏塔的全部或一部分富氮蒸气流。

    LIQUEFACTION METHOD AND SYSTEM
    8.
    发明申请
    LIQUEFACTION METHOD AND SYSTEM 审中-公开
    液化方法与系统

    公开(公告)号：WO2010058277A3

    公开(公告)日：2011-10-13

    申请号：PCT/IB2009007519

    申请日：2009-11-16

    Applicant: AIR PROD & CHEM ,  BROSTOW ADAM ADRIAN ,  ROBERTS MARK JULIAN

    Inventor： BROSTOW ADAM ADRIAN ,  ROBERTS MARK JULIAN

    IPC: F25J1/00 ,  F25J1/02

    CPC classification number: F25J1/005 ,  F25J1/0022 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/0072 ,  F25J1/0087 ,  F25J1/009 ,  F25J1/0095 ,  F25J1/0097 ,  F25J1/0204 ,  F25J1/0205 ,  F25J1/0254 ,  F25J1/0263 ,  F25J1/0265 ,  F25J1/0267 ,  F25J1/0268 ,  F25J1/0283 ,  F25J1/0284 ,  F25J1/0288 ,  F25J1/0294 ,  F25J2220/62 ,  F25J2230/08 ,  F25J2230/32 ,  F25J2270/16 ,  F25J2290/62

    Abstract: A feed gas is liquefied using a closed loop refrigeration system in which a cooled compressed gaseous refrigerant stream (150) is expanded (136) to provide a first expanded gaseous refrigerant stream (154) that is substantially vapor and is used to cool and substantially liquefy a feed gas stream (100) through indirect heat exchange (110). The substantially liquefied feed gas stream (102) preferably is subcooled through indirect heat exchange (112) against a second expanded gaseous refrigerant stream (172) that preferably also is substantially vapor and can be provided by a cooled compressed gaseous refrigerant stream (170) or by a portion of the first expanded gaseous refrigerant stream (152). Cooling duty for the compressed gaseous refrigerant stream (146) is provided by a portion (160) of the first expanded gaseous refrigerant stream (152), gaseous refrigerant (156) partially warmed by said heat exchange (110) against feed gas, and/or second expanded gaseous refrigerant stream (174) warmed by said subcooling (112).

    Abstract translation: 使用闭环制冷系统液化进料气体，其中冷却的压缩气态制冷剂流（150）膨胀（136）以提供基本蒸气并用于冷却和基本液化的第一膨胀气态制冷剂流（154） 通过间接热交换（110）的进料气流（100）。 基本上液化的进料气流（102）优选通过间接热交换（112）过冷而相对于第二膨胀气态制冷剂流（172）过冷，第二膨胀气态制冷剂流优选也基本上是蒸气，并且可以由冷却的压缩气态制冷剂流（170）或 通过第一膨胀的气态制冷剂流（152）的一部分。 压缩的气态制冷剂流（146）的冷却功率由第一膨胀气态制冷剂流（152）的一部分（160），由所述热交换器（110）部分温热的气态制冷剂（115）与进料气体和/ 或由所述过冷却器（112）加温的第二膨胀气态制冷剂流（174）。

    REFRIGERANT COMPOSITION CONTROL
    9.
    发明申请
    REFRIGERANT COMPOSITION CONTROL 审中-公开
    制冷剂组合物控制

    公开(公告)号：WO2011018686A2

    公开(公告)日：2011-02-17

    申请号：PCT/IB2010/001910

    申请日：2010-07-28

    Applicant: AIR PRODUCTS AND CHEMICALS, INC. ,  ROBERTS, Mark, Julian ,  BROSTOW, Adam, Adrian

    Inventor： ROBERTS, Mark, Julian ,  BROSTOW, Adam, Adrian

    IPC: F25J1/02

    CPC classification number: F25J1/0022 ,  F25J1/005 ,  F25J1/0072 ,  F25J1/0204 ,  F25J1/025 ,  F25J1/0265 ,  F25J1/0279 ,  F25J2210/06 ,  F25J2220/44 ,  F25J2220/62 ,  F25J2270/16

    Abstract: Contaminant is removed from a refrigerant stream of a reverse Brayton cycle refrigerant system (110-150) by introducing a liquefied portion (164) of the refrigerant stream into a contaminant removal column (162) as a reflux stream, removing a contaminant-enriched stream (167) from the bottom of the contaminant removal column, removing a refrigerant-enriched vapor stream (164) from the top of the contaminant removal column, and introducing said vapor stream back into the reverse Brayton cycle refrigerant system. Reboil duty (270) for the column can be provided by fluid (163) being cooled and/or liquefied by the system or vapor traffic can provided to the column by a portion (563) of the refrigerant stream or said fluid (163). The invention has particular application to natural gas liquefaction.

    Abstract translation: 通过将制冷剂流的液化部分（164）引入作为回流的污染物去除塔（162）中，将污染物从反向布雷顿循环制冷剂系统（110-150）的制冷剂流中除去，除去富含污染物流 （167），从污染物去除塔的底部除去富含冷凝剂的蒸汽流（164），并将所述蒸汽流引入反向布雷顿循环制冷剂系统。 可以通过系统冷却和/或液化的流体（163）或通过制冷剂流或所述流体（163）的一部分（563）提供给塔的蒸汽流量来提供塔的再沸腾功率（270）。 本发明特别适用于天然气液化。

    INTEGRATED MULTIPLE-LOOP REFRIGERATION PROCESS FOR GAS LIQUEFACTION
    10.
    发明申请
    INTEGRATED MULTIPLE-LOOP REFRIGERATION PROCESS FOR GAS LIQUEFACTION 审中-公开

    公开(公告)号：WO2004083753A3

    公开(公告)日：2004-09-30

    申请号：PCT/IB2004/000946

    申请日：2004-03-16

    Applicant: AIR PRODUCTS AND CHEMICALS, INC. ,  ROBERTS, Mark, Julian

    Inventor： ROBERTS, Mark, Julian

    IPC: F25J1/02

    Abstract: A gas (1) is liquefied by cooling successively through at least two temperature ranges by vaporization of respective refrigerants (117, 213 & 315) with the vaporizing refrigerant providing the coldest temperature range further vaporizing (317) at temperatures above the highest temperature of that range. The partially vaporized refrigerant (316) that provided the coldest temperature range preferably is further vaporized (317) against a compressed return vapor (328) in a recirculating refrigeration system.

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