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公开(公告)号：US20180216879A1
公开(公告)日：2018-08-02
申请号：US15746701
申请日：2016-07-21
CPC分类号： F25J1/023 , F02C3/045 , F05B2210/11 , F25B1/00 , F25B1/053 , F25J1/0022 , F25J1/0042 , F25J1/0247 , F25J1/0263 , F25J1/0284 , F25J1/0298 , F25J2280/10
摘要： A method for starting and operating a plant for the liquefaction of a gaseous product comprising the steps of electrically connecting a variable frequency drive to a motor of a first machine string; increasing the speed of the motor of the first machine string up until a first predefined threshold; electrically disconnecting the variable frequency drive from the motor of the first machine string; electrically connecting the variable frequency drive to a motor of a second machine string; the first predefined threshold is function of said frequency of the power supply grid. The variable frequency drive can be switched during operation of the plant among the strings according to process requirements.
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公开(公告)号：US09810478B2
公开(公告)日：2017-11-07
申请号：US14634554
申请日：2015-02-27
发明人： Daniel Isaacson , Thomas M. Norton
CPC分类号： F25J1/0022 , B63B25/16 , B63B2035/448 , F17C2265/05 , F17C2270/0105 , F25J1/0025 , F25J1/0247 , F25J1/0272 , F25J1/0278 , F25J2210/62
摘要： A floating liquefied natural gas (“FLNG”) commissioning system and method are described. A system for commissioning a FLNG vessel comprises a floating liquefaction vessel positioned offshore proximate a shipyard, the floating liquefaction vessel comprising a natural gas liquefaction module and a first LNG storage tank cryogenically coupled to the natural gas liquefaction module, a regasification vessel positioned alongside the floating liquefaction vessel, the regasification vessel comprising a second LNG storage tank fluidly coupled to a regasification facility onboard the regasification vessel, a high pressure natural gas conduit extending between an output of the regasification facility and an input of the liquefaction module, a cryogenic transfer member extending between the second LNG storage tank and the first LNG storage tank, and a gaseous natural gas coupling extending between the natural gas liquefaction module and one of the first LNG storage tank, the second LNG storage tank or a combination thereof.
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公开(公告)号：US20130042645A1
公开(公告)日：2013-02-21
申请号：US13580977
申请日：2011-02-25
IPC分类号： F25J1/00
CPC分类号： F25J1/0022 , F25J1/0245 , F25J1/0247 , F25J1/0248 , F25J2210/04 , F25J2210/62 , F25J2220/62 , F25J2245/02
摘要： A method for turndown of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, includes removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
摘要翻译： 一种液化天然气（LNG）设备的调节方法，包括设置在设备的流路中的液化单元的设备包括从液化单元下游的流路中的第一位置移除LNG; 蒸发除去的LNG，或加热去除的LNG，使得去除的LNG转化为气相; 并且在液化单元上游的第二位置处将蒸发的或转化的LNG重新进入流路。 还提供了相应的LNG设备。
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公开(公告)号：US08215120B2
公开(公告)日：2012-07-10
申请号：US12367162
申请日：2009-02-06
申请人： Andres Kundig
发明人： Andres Kundig
IPC分类号： F25B1/00
CPC分类号： F25J1/0007 , F17C13/083 , F17C2201/054 , F17C2221/012 , F17C2221/014 , F17C2223/0161 , F17C2223/033 , F17C2227/0339 , F17C2227/0355 , F17C2227/0369 , F17C2227/0388 , F17C2260/031 , F17C2260/056 , F17C2270/0165 , F25J1/001 , F25J1/0035 , F25J1/0037 , F25J1/0065 , F25J1/0208 , F25J1/0224 , F25J1/0247 , F25J1/025 , F25J1/0276 , F25J2210/42 , F25J2245/90 , F25J2270/90 , F25J2270/912 , F25J2290/62 , Y02E60/321
摘要： A process for cooling a storage container, in particular a mobile storage container for a cryogenic medium, is described.According to the invention, the following process steps and features are provided: a) Direct or indirect connection of the storage container (S) that is to be cooled to a refrigeration circuit (2-8, V, T, a, a′), b) Whereby a cold medium, which is identical to or different from the medium that is to be stored in the storage container that is to be cooled, circulates in the refrigeration circuit, c) Whereby the cold medium is compressed (V), cooled (E), and expanded (T) to produce cold, and d) At least a partial stream of the cold medium (5, 7) is used for the cooling of the storage container (S) that is to be cooled.
摘要翻译： 描述了用于冷却储存容器，特别是用于低温介质的移动存储容器的方法。 根据本发明，提供以下工艺步骤和特征：a）要冷却的储存容器（S）直接或间接连接到制冷回路（2-8，V，T，a，a'） b）由冷藏媒体与要冷却的储存容器中存储的介质相同或不同的冷介质在制冷回路中循环，c）冷媒被压缩（V）， 冷却（E）和膨胀（T）以产生冷，以及d）冷却介质（5,7）的至少一部分流用于冷却待冷却的储存容器（S）。
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公开(公告)号：US20120167616A1
公开(公告)日：2012-07-05
申请号：US13382036
申请日：2009-07-02
申请人： Pieter Cornelis Burger , Clemens Gerardus Johannes Maria Van Der Nat , Jozefus Gerardus Petrus Vernooij
发明人： Pieter Cornelis Burger , Clemens Gerardus Johannes Maria Van Der Nat , Jozefus Gerardus Petrus Vernooij
IPC分类号： F25J1/02
CPC分类号： F25J1/0268 , F25J1/0022 , F25J1/0052 , F25J1/0057 , F25J1/0247 , F25J1/0248 , F25J2210/42 , F25J2210/62 , F25J2270/904
摘要： A method is provided for operating a system for the liquefaction of gas of the type comprising a main heat exchange vessel, a bundle for the gas to be liquefied extending through said MCHE and a refrigerant compression circuit of which a first end leads evaporated refrigerant from the vessel towards a compressor and a second end supplies the compressed and cooled refrigerant from the compressor towards the MCHE. For avoiding problems during heat up or during start up of the heat exchanger the pressure within the liquefaction system is controlled by regulating the amount of evaporated refrigerant in the liquefaction circuit.
摘要翻译： 提供了一种操作用于液化气体的系统的方法，所述系统包括主热交换容器，用于待液化的气体的束延伸穿过所述MCHE，以及制冷剂压缩回路，其第一端从蒸发的制冷剂引出蒸发的制冷剂 朝向压缩机的容器，第二端将压缩和冷却的制冷剂从压缩机提供给MCHE。 为了避免在加热期间或在热交换器启动期间的问题，通过调节液化回路中蒸发的制冷剂的量来控制液化系统内的压力。
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公开(公告)号：US07594414B2
公开(公告)日：2009-09-29
申请号：US11381904
申请日：2006-05-05
IPC分类号： F25J1/00
CPC分类号： F25J5/002 , F25J1/0022 , F25J1/0035 , F25J1/0037 , F25J1/004 , F25J1/0045 , F25J1/0201 , F25J1/0232 , F25J1/0244 , F25J1/0247 , F25J1/0259 , F25J1/0262 , F25J1/0275 , F25J2205/20 , F25J2205/84 , F25J2210/06 , F25J2220/62 , F25J2220/66 , F25J2220/68 , F25J2230/30 , F25J2240/60 , F25J2245/90 , F25J2290/44 , F25J2290/62 , F28D7/0066 , F28D7/0091 , F28D7/028 , F28F13/06 , F28F19/01
摘要： An apparatus and method for producing liquefied natural gas. A liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a process stream and a cooling stream. The cooling stream passes through an expander creating work output. A compressor may be driven by the work output and compresses the process stream. The compressed process stream is cooled, such as by the expanded cooling stream. The cooled, compressed process stream is divided into first and second portions with the first portion being expanded to liquefy the natural gas. A gas-liquid separator separates the vapor from the liquid natural gas. The second portion of the cooled, compressed process stream is also expanded and used to cool the compressed process stream.
摘要翻译： 一种用于生产液化天然气的设备和方法。 液化设备可以连接到未纯化天然气源，例如压力降低站处的天然气管道。 将气体的一部分抽出并分成工艺流和冷却流。 冷却流通过膨胀机产生工作输出。 压缩机可以由工作输出驱动并压缩过程流。 压缩的工艺流被冷却，例如通过膨胀的冷却流。 冷却的压缩的工艺物流被分成第一和第二部分，第一部分被膨胀以液化天然气。 气液分离器将液体天然气分离出来。 冷却的压缩过程流的第二部分也被扩展并用于冷却压缩过程流。
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公开(公告)号：US20090100844A1
公开(公告)日：2009-04-23
申请号：US10578884
申请日：2004-11-11
CPC分类号： F25J1/0204 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2223/043 , F17C2225/0161 , F17C2225/033 , F17C2225/046 , F17C2265/015 , F17C2265/022 , F17C2265/033 , F17C2265/037 , F25J1/0025 , F25J1/0045 , F25J1/005 , F25J1/0072 , F25J1/0208 , F25J1/0247 , F25J1/0249 , F25J1/0277 , F25J1/0288 , F25J2205/30 , F25J2220/62 , F25J2230/08 , F25J2230/60 , F25J2245/02
摘要： An apparatus and method for controlling temperature in a boil-off gas in a liquefaction plant prior to compression, wherein boil-off gas originating from an LNG storage tank is compressed and at least partially condensed, and wherein the condensed boil-off gas (LNG) is being returned to the storage tank. A heat exchanger (20) is connected to the boil-off gas feed line upstream of the compressor (10), and a first conduit (22) fluidly connects the line for returning LNG to the storage tank and the heat exchanger (20). A second conduit (26) fluidly connects the heat exchanger (20) to the boil-off gas feed line at a point upstream of the heat exchanger (20). Boil-off gas is heat exchanged against the cooler (24) prior to being fed into the compressor (10). Thus, the boil-off gas temperature is lowered downstream of the heat exchange.
摘要翻译： 一种用于在压缩之前控制液化装置中的蒸发气体中的温度的装置和方法，其中源自LNG储罐的蒸发气体被压缩并且至少部分冷凝，并且其中冷凝的蒸发气体 ）正在返回到储罐。 热交换器（20）连接到压缩机（10）上游的蒸发气体供给管线，并且第一管道（22）将用于使LNG返回到储罐和热交换器（20）的管路流体连接。 第二导管（26）在热交换器（20）上游的一个点处将热交换器（20）流体地连接到蒸发气体进料管线。 在被送入压缩机（10）之前，蒸发气体与冷却器（24）进行热交换。 因此，蒸发气体温度在热交换的下游降低。
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公开(公告)号：US20070107465A1
公开(公告)日：2007-05-17
申请号：US11560682
申请日：2006-11-16
申请人： Terry Turner , Bruce Wilding , Dennis Bingham , Michael McKellar , Lisa Hoffman
发明人： Terry Turner , Bruce Wilding , Dennis Bingham , Michael McKellar , Lisa Hoffman
IPC分类号： F25J1/00
CPC分类号： F25J1/0022 , F25J1/0037 , F25J1/004 , F25J1/0045 , F25J1/0201 , F25J1/0202 , F25J1/0204 , F25J1/0212 , F25J1/0232 , F25J1/0247 , F25J1/0251 , F25J1/0275 , F25J3/08 , F25J2205/20 , F25J2205/60 , F25J2205/84 , F25J2210/06 , F25J2215/60 , F25J2220/62 , F25J2220/66 , F25J2220/68 , F25J2230/60 , F25J2270/04 , F25J2280/02 , F25J2290/62
摘要： An apparatus, a system and a method for producing liquefied gas are provided. A liquefaction plant may be coupled to a source of, for example, unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a process stream and a cooling stream. The cooling stream may pass through an expansion device. The compressed process stream is cooled, such as by a heat exchange process utilizing the expanded cooling stream, by a heat exchanger utilizing a separate, independent refrigerant, or by both. The cooled, compressed process stream is expanded to liquefy the natural gas. A gas-liquid separator separates the vapor from the liquid natural gas. A portion of the liquid gas may be used for additional cooling or substantially all of the liquid gas may be collected as product.
摘要翻译： 提供了一种用于生产液化气的设备，系统和方法。 液化设备可以耦合到例如未纯化天然气的源，例如在压力降低站处的天然气管道。 将气体的一部分抽出并分成工艺流和冷却流。 冷却流可以通过膨胀装置。 压缩的工艺流被冷却，例如通过利用膨胀的冷却流的热交换过程，利用独立的独立的制冷剂的热交换器，或两者。 冷却的压缩过程流被膨胀以液化天然气。 气液分离器将液体天然气分离出来。 液体气体的一部分可以用于额外的冷却，或者基本上所有的液体气体可以作为产品来收集。
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公开(公告)号：US20060213223A1
公开(公告)日：2006-09-28
申请号：US11381904
申请日：2006-05-05
申请人： Bruce Wilding , Michael McKellar , Terry Turner , Francis Carney
发明人： Bruce Wilding , Michael McKellar , Terry Turner , Francis Carney
IPC分类号： F25J1/00
CPC分类号： F25J5/002 , F25J1/0022 , F25J1/0035 , F25J1/0037 , F25J1/004 , F25J1/0045 , F25J1/0201 , F25J1/0232 , F25J1/0244 , F25J1/0247 , F25J1/0259 , F25J1/0262 , F25J1/0275 , F25J2205/20 , F25J2205/84 , F25J2210/06 , F25J2220/62 , F25J2220/66 , F25J2220/68 , F25J2230/30 , F25J2240/60 , F25J2245/90 , F25J2290/44 , F25J2290/62 , F28D7/0066 , F28D7/0091 , F28D7/028 , F28F13/06 , F28F19/01
摘要： An apparatus and method for producing liquefied natural gas. A liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a process stream and a cooling stream. The cooling stream passes through an expander creating work output. A compressor may be driven by the work output and compresses the process stream. The compressed process stream is cooled, such as by the expanded cooling stream. The cooled, compressed process stream is divided into first and second portions with the first portion being expanded to liquefy the natural gas. A gas-liquid separator separates the vapor from the liquid natural gas. The second portion of the cooled, compressed process stream is also expanded and used to cool the compressed process stream.
摘要翻译： 一种用于生产液化天然气的设备和方法。 液化设备可以连接到未纯化天然气源，例如压力降低站处的天然气管道。 将气体的一部分抽出并分成工艺流和冷却流。 冷却流通过膨胀机产生工作输出。 压缩机可以由工作输出驱动并压缩过程流。 压缩的工艺流被冷却，例如通过膨胀的冷却流。 冷却的压缩的工艺物流被分成第一和第二部分，第一部分被膨胀以液化天然气。 气液分离器将液体天然气分离出来。 冷却的压缩过程流的第二部分也被扩展并用于冷却压缩过程流。
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公开(公告)号：US06460350B2
公开(公告)日：2002-10-08
申请号：US09774461
申请日：2001-01-31
申请人： Paul C. Johnson , Fred E. Staible
发明人： Paul C. Johnson , Fred E. Staible
IPC分类号： F17C704
CPC分类号： F25J1/0025 , F17C5/02 , F17C5/04 , F17C9/02 , F17C9/04 , F17C13/002 , F17C2221/011 , F17C2221/012 , F17C2221/014 , F17C2221/016 , F17C2221/017 , F17C2221/033 , F17C2221/035 , F17C2221/037 , F17C2223/0153 , F17C2227/0164 , F17C2265/032 , F17C2265/037 , F17C2265/05 , F17C2270/0105 , F25J1/0247 , F25J2210/06 , F25J2230/08 , F25J2230/20 , F25J2230/60 , F25J2240/02 , F25J2245/90 , Y02E60/321
摘要： A method for recovering gas is described and includes compressing gas with a turboexpander-driven compressor. The compressor may be a high speed cryogenic centrifugal compressor and the gas to be recovered may be generated from a source of liquefied gas, such as during the transfer of liquefied natural gas from a shipping vessel to a storage tank. A system for recovering gas is also provided and includes a turboexpander-driven compressor in communication with a source of gas to be compressed. The system may be provided with a circuit such that at least a portion of the compressed gas, and/or at least a portion of an expanded, reduced-pressure gas exiting the turboexpander, is directed to the source of the gas.
摘要翻译： 描述了一种回收气体的方法，包括用涡轮膨胀机驱动的压缩机压缩气体。 压缩机可以是高速低温离心压缩机，并且待回收的气体可以从液化气源产生，例如在将液化天然气从运输船转移到储罐期间。 还提供了用于回收气体的系统，并且包括与待压缩的气体源连通的涡轮膨胀机驱动的压缩机。 该系统可以设置有使得离开涡轮膨胀机的至少一部分压缩气体和/或膨胀的减压气体的至少一部分被引导到气体源的电路。
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