APPARATUS AND METHOD FOR OPTIMIZING A NATURAL GAS LIQUEFACTION TRAIN HAVING A NITROGEN COOLING LOOP
    1.
    发明申请
    APPARATUS AND METHOD FOR OPTIMIZING A NATURAL GAS LIQUEFACTION TRAIN HAVING A NITROGEN COOLING LOOP 审中-公开
    用于优化具有氮气冷却环的天然气液化燃料火箭的装置和方法

    公开(公告)号:WO2008157102A3

    公开(公告)日:2012-04-12

    申请号:PCT/US2008066252

    申请日:2008-06-09

    发明人: COWARD BRIAN A

    摘要: A natural gas liquefaction train (100, 100a-100n) includes a nitrogen cooling loop. A controller (208a-208n, 300) is provided for controlling one or more controlled variables by adjusting one or more manipulated variables. The one or more manipulated variables may include a nitrogen flow associated with the nitrogen cooling loop in the natural gas liquefaction train. The controller could adjust the nitrogen flow by adjusting operation of a compressor (178) associated with the nitrogen cooling loop. The one or more controlled variables may include a rundown temperature of liquefied natural gas exiting the nitrogen loop and/or a calorific or heating value of the liquefied natural gas exiting the nitrogen loop. A second controller (206a-206n) could control other aspects of the natural gas liquefaction train, such as by controlling a mass flow rate of a feed gas in the natural gas liquefaction train.

    摘要翻译: 天然气液化系列(100,100a-100n)包括氮气冷却回路。 提供控制器(208a-208n,300),用于通过调整一个或多个操作变量来控制一个或多个受控变量。 一个或多个操纵变量可以包括与天然气液化系列中的氮冷却回路相关联的氮气流。 控制器可以通过调节与氮气冷却回路相关联的压缩机(178)的操作来调节氮气流量。 一个或多个受控变量可以包括离开氮气回路的液化天然气的冷却温度和/或离开氮气回路的液化天然气的发热量或发热值。 第二控制器(206a-206n)可以通过控制天然气液化系统中进料气体的质量流量来控制天然气液化列车的其它方面。

    METHOD FOR LIQUEFYING A STREAM RICH IN HYDROCARBONS
    2.
    发明申请
    METHOD FOR LIQUEFYING A STREAM RICH IN HYDROCARBONS 审中-公开
    方法液化烃,富流

    公开(公告)号:WO2008098704A2

    公开(公告)日:2008-08-21

    申请号:PCT/EP2008000957

    申请日:2008-02-07

    摘要: A method for liquefying a stream rich in hydrocarbons, in particular, a natural gas stream is disclosed, wherein the liquefying of the stream rich in hydrocarbons is carried out in a cascade comprising three refrigeration circuits and the first refrigeration circuit carries out the precooling, the second refrigerant circuit carries out the liquefying and the third refrigerant circuit carries out the supercooling of the stream rich in hydrocarbons. According to the invention, the refrigerant in the refrigerant circuit for the precooling (E1) of the stream rich in hydrocarbons contains (a - a"") C 3 H 8 , C 3 H 6 , C 2 H 6 or C 2 H 4 in a concentration fo at least 95 Vol. % and the temperature difference between the boiling point and the dew point of the refrigerant is less than 5 °C.

    摘要翻译: 一种用于液化富烃料流,特别是天然气的流,其中所述富烃流的液化针对三个冷冻回路级联实现方法,并且其中所述预冷却的第一冷却回路,所述第二制冷循环液化和的副冷却的第三个周期 富烃料流进行说明。 根据本发明,预冷却的制冷剂(E1),供应冷冻回路(A - A'“)C 3 ħ 8 ,C 3 ħ 6 ,C 2 ħ 6 或C 2 ħ 4 在至少95的浓度 体积%和沸腾和制冷剂的露点之间的温度差小于5℃

    METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON-CONTAINING FEED STREAM
    3.
    发明申请
    METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON-CONTAINING FEED STREAM 审中-公开
    用于液化含油气进料流的方法和装置

    公开(公告)号:WO2008020044A2

    公开(公告)日:2008-02-21

    申请号:PCT/EP2007/058461

    申请日:2007-08-15

    摘要: Method and apparatus for liquefying a hydrocarbon stream such as natural gas from a feed stream. The method comprises at least the steps of : (a) providing the feed stream (10); (b) first cooling the feed stream (10) against a first cooling refrigerant being cycled in a first cooling refrigerant circuit (100), thereby obtaining a cooled gas stream (20), wherein the first cooling refrigerant comprises > 90 mol% propane; (c) second cooling the cooled gas stream (20) obtained in step (b) into a liquid against a first mixed refrigerant being cycled in a first mixed refrigerant circuit (200), wherein said second cooling is in two or more heat exchangers (42, 44), at least two of which are operating at different pressures, thereby obtaining a liquefied stream (60); and (d) sub-cooling the liquefied stream (60) obtained in step (c) against a second mixed refrigerant or against a nitrogen refrigerant being cycled in a sub-cooling refrigerant circuit (300), thereby obtaining a sub-cooled hydrocarbon stream (70).

    摘要翻译: 从进料流中液化烃流如天然气的方法和装置。 该方法至少包括以下步骤:(a)提供进料流(10); (b)首先冷却进料流(10)抵靠在第一冷却制冷剂回路(100)中循环的第一冷却制冷剂,从而获得冷却的气流(20),其中第一冷却制冷剂包含> 90mol%的丙烷; (c)将在步骤(b)中获得的冷却的气流(20)第二次冷却成在第一混合制冷剂回路(200)中循环的第一混合制冷剂的液体,其中所述第二冷却是在两个或多个热交换器 42,44),其中至少两个在不同的压力下操作,从而获得液化流(60); 和(d)将在步骤(c)中获得的液化物流(60)相对于第二混合制冷剂或在次冷却制冷剂回路(300)中循环的氮制冷剂进行副冷却,从而获得副冷却的烃流 (70)。

    SEMI-CLOSED LOOP LNG PROCESS
    5.
    发明申请
    SEMI-CLOSED LOOP LNG PROCESS 审中-公开
    半闭式液化天然气工艺

    公开(公告)号:WO2006009610A3

    公开(公告)日:2006-02-23

    申请号:PCT/US2005019620

    申请日:2005-06-06

    发明人: EATON ANTHONY P

    IPC分类号: F25J1/00 F25J1/02 F25J3/00

    摘要: A semi-closed loop system for producing liquefied natural gas (LNG) that combines certain advantages of closed-loop systems with certain advantages of open-loop systems to provide a more efficient and effective hybrid system. In the semi-closed loop system, the final methane refrigeration cycle provides significant cooling of the natural gas stream via indirect heat transfer, as opposed to expansion-type cooling. A minor portion of the LNG product from the methane refrigeration cycle is used as make-up refrigerant in the methane refrigeration cycle. A pressurized portion of the refrigerant from the methane refrigeration cycle is employed as fuel gas. Excess refrigerant from the methane refrigeration cycle can be recombined with the processed natural gas stream, rather than flared.

    摘要翻译: 一种用于生产液化天然气(LNG)的半闭环系统,其将闭环系统的某些优点与开环系统的某些优点相结合,以提供更有效和更有效的混合系统。 在半闭环系统中,与膨胀型冷却相反,最终的甲烷制冷循环通过间接传热提供天然气流的显着冷却。 来自甲烷制冷循环的LNG产品的一小部分用作甲烷制冷循环中的补充制冷剂。 来自甲烷制冷循环的制冷剂的加压部分用作燃料气体。 来自甲烷制冷循环的过量制冷剂可以与加工的天然气流重组,而不是扩口。

    LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR
    7.
    发明申请
    LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR 审中-公开
    液化天然气工厂,包括轴压缩机和离心式压缩机

    公开(公告)号:WO2017017025A1

    公开(公告)日:2017-02-02

    申请号:PCT/EP2016/067567

    申请日:2016-07-22

    摘要: The LNG plant comprises a compression train (100) and a further compression train (200), and may advantageously implement for example 3-cycles pure-refrigerants liquefaction technologies or multiple-cycles pure-refrigerant and mixed-refrigerant liquefaction technologies. The compression train (100) comprises a first and a second set of axial compression stages (321, 322, 323), one main inlet (301), one main outlet (302), one auxiliary inlet (303) and/or one auxiliary outlet, wherein a fluid entering the compressor (130) through the auxiliary inlet (303) is redirected from a substantially radial direction to a substantially axial direction and/or a fluid exiting the compressor (130) through the auxiliary outlet is redirected from a substantially axial direction to a substantially radial direction. The further compression train (200) comprises a first set of impellers (411, 412) being centrifugal and unshrouded and a second set of impellers (421, 422, 423) being centrifugal and shrouded.

    摘要翻译: LNG设备包括压缩系(100)和另外的压缩系(200),并且可以有利地实施例如3循环纯制冷剂液化技术或多循环纯制冷剂和混合制冷剂液化技术。 压缩系(100)包括第一和第二组轴向压缩级(321,322,323),一个主入口(301),一个主出口(302),一个辅助入口(303)和/或一个辅助 其中通过所述辅助入口(303)进入所述压缩机(130)的流体从基本上径向重新定向到基本上轴向的方向,和/或通过所述辅助出口离开所述压缩机(130)的流体从基本上 轴向到大致径向方向。 所述另外的压缩系200包括离心式和无罩式的第一组叶轮(411,412),以及离心式并被罩住的第二组叶轮(421,422,423)。

    METHOD FOR PRODUCING A STREAM OF SUBCOOLED LIQUEFIED NATURAL GAS USING A NATURAL GAS FEEDSTREAM, AND ASSOCIATED FACILITY
    8.
    发明申请
    METHOD FOR PRODUCING A STREAM OF SUBCOOLED LIQUEFIED NATURAL GAS USING A NATURAL GAS FEEDSTREAM, AND ASSOCIATED FACILITY 审中-公开
    使用天然气饲料生产流化床液化天然气的方法及相关设施

    公开(公告)号:WO2010061102A3

    公开(公告)日:2012-03-22

    申请号:PCT/FR2009052239

    申请日:2009-11-20

    IPC分类号: F25J1/02

    摘要: The invention relates to a method which includes passing the feedstream (12) into a first heat exchanger (16) to perform a heat exchange with a stream (60) of gaseous coolant produced in a first refrigeration cycle (26) including a first dynamic turbo-expander (34). The method includes passing a precooled feedstream (18) into a second heat exchanger (20) to perform a heat exchange with a second stream (62) of gaseous coolant produced in a second refrigeration cycle (28) including a second dynamic turbo-expander (42). The method includes passing a stream of liquefied natural gas (22) into a third heat exchanger to perform a heat exchange with a third stream (64) of coolant produced in a third refrigeration cycle (30) including a third dynamic turbo-expander (52), distinct from the first turbo-expander (34) and from the second turbo-expander (42).

    摘要翻译: 本发明涉及一种方法,其包括使进料流(12)进入第一热交换器(16)以与在第一制冷循环(26)中产生的气态冷却剂流(60)进行热交换,所述第一制冷循环(26)包括第一动态涡轮 膨胀机(34)。 该方法包括使预冷进料流(18)进入第二热交换器(20)以与在包括第二动态涡轮膨胀机(28)的第二制冷循环(28)中产生的气态冷却剂的第二流(62)进行热交换 42)。 该方法包括使液化天然气流(22)进入第三热交换器以与第三制冷循环(30)中产生的冷却剂的第三流(64)进行热交换,所述第三制冷循环(30)包括第三动态涡轮膨胀机 ),与第一涡轮膨胀机(34)和第二涡轮膨胀机(42)不同。

    INTEGRATED PRE-COOLED MIXED REFRIGERANT SYSTEM AND METHOD
    9.
    发明申请
    INTEGRATED PRE-COOLED MIXED REFRIGERANT SYSTEM AND METHOD 审中-公开
    综合预冷混合制冷系统及方法

    公开(公告)号:WO2011115760A1

    公开(公告)日:2011-09-22

    申请号:PCT/US2011/027162

    申请日:2011-03-04

    IPC分类号: F25J1/02

    摘要: A system and method for cooling and liquefying a gas in a heat exchanger that includes compressing and cooling a mixed refiigerant using first and last compression and cooling cycles so that high pressure liquid and vapor streams are formed, The high pressure liquid and vapor streams are cooled in the heat exchanger and then expanded so that a primary refrigeration stream is provided in the heat exchanger. The mixed refrigerant is cooled and equilibrated between the first and last compression and cooling cycles so that a pre-cool liquid stream is formed and subcooled in the heat exchanger. The stream is then expanded and passed through the heat exchanger as a pre-cool refrigeration stream. A stream of gas is passed through the heat exchanger in countercurrent heat exchange with the primary refrigeration stream and the pre-cool refrigeration stream so that the gas is cooled.

    摘要翻译: 一种用于冷却和液化热交换器中的气体的系统和方法,该系统和方法包括使用第一和最后的压缩和冷却循环来压缩和冷却混合冷凝器,从而形成高压液体和蒸气流。高压液体和蒸汽流被冷却 在热交换器中膨胀,从而在热交换器中提供初级制冷流。 混合的制冷剂在第一和最后的压缩和冷却循环之间被冷却和平衡,从而在热交换器中形成预冷液体流并过冷却。 然后将该物流作为预冷的制冷流膨胀并通过热交换器。 气流通过热交换器与初级制冷流和预冷制冷流逆流热交换,使得气体被冷却。