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公开(公告)号:US06446465B1
公开(公告)日:2002-09-10
申请号:US09951725
申请日:2001-09-14
Applicant: Christopher A. T. Dubar
Inventor: Christopher A. T. Dubar
IPC: F25J100
CPC classification number: F25J3/0257 , F25J1/0022 , F25J1/0045 , F25J1/005 , F25J1/0052 , F25J1/0072 , F25J1/0097 , F25J1/0205 , F25J1/0236 , F25J1/0263 , F25J1/0278 , F25J1/0283 , F25J1/0288 , F25J1/0294 , F25J3/0209 , F25J3/0233 , F25J2200/02 , F25J2200/70 , F25J2215/04 , F25J2220/62 , F25J2230/22 , F25J2230/60 , F25J2240/40 , F25J2240/80 , F25J2270/16 , F25J2270/90 , F25J2290/72
Abstract: 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.
Abstract translation: 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。
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公开(公告)号:US06250244B1
公开(公告)日:2001-06-26
申请号:US09644233
申请日:2000-08-23
Applicant: Christopher A. T. Dubar , Oliver Leh Ming Tu
Inventor: Christopher A. T. Dubar , Oliver Leh Ming Tu
IPC: B63B3544
CPC classification number: F25J3/0257 , F25J1/0022 , F25J1/0042 , F25J1/005 , F25J1/0072 , F25J1/0097 , F25J1/0204 , F25J1/025 , F25J1/0259 , F25J1/0267 , F25J1/0278 , F25J1/0283 , F25J1/0288 , F25J1/0294 , F25J1/0297 , F25J3/0209 , F25J3/0233 , F25J2200/02 , F25J2200/70 , F25J2215/04 , F25J2230/22 , F25J2230/60 , F25J2240/30 , F25J2245/02 , F25J2270/16 , F25J2290/10 , F25J2290/60 , F25J2290/72 , Y10S62/912
Abstract: A support structure that is either floatable or otherwise adapted to be disposed in an offshore location at least partially above sea level. A natural gas liquefaction system is located on or in the support structure and has a series of heat exchangers for cooling the natural gas in a countercurrent heat exchange relationship with a refrigerant. One or more compressors compress the refrigerant which is divided into two separate streams. Each stream is fed to a liquid expansion turbine where it is isentropically expanded. The expanded streams of refrigerant are then fed to the cool end of one of the heat exchangers.
Abstract translation: 支撑结构,其可浮动或以其他方式适于被布置在至少部分地高于海平面的海上位置。 天然气液化系统位于支撑结构上或支撑结构中,并具有一系列热交换器,用于冷却与制冷剂逆流热交换关系的天然气。 一个或多个压缩机压缩分成两个分开的流的制冷剂。 每个流被供给到液体膨胀涡轮机,其中它被等熵膨胀。 然后将膨胀的制冷剂流送入其中一个热交换器的冷却端。
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公开(公告)号:US5916260A
公开(公告)日:1999-06-29
申请号:US51221
申请日:1998-07-13
Applicant: Christopher A. T. Dubar
Inventor: Christopher A. T. Dubar
CPC classification number: F25J3/0257 , F25J1/0022 , F25J1/0042 , F25J1/005 , F25J1/0072 , F25J1/0097 , F25J1/0204 , F25J1/025 , F25J1/0259 , F25J1/0267 , F25J1/0278 , F25J1/0283 , F25J1/0288 , F25J1/0294 , F25J1/0297 , F25J3/0209 , F25J3/0233 , F25J2200/02 , F25J2200/70 , F25J2215/04 , F25J2230/22 , F25J2230/60 , F25J2240/30 , F25J2245/02 , F25J2270/16 , F25J2290/10 , F25J2290/60 , F25J2290/72 , Y10S62/912
Abstract: A natural gas liquefaction process comprises passing natural gas through a series of heat exchangers in countercurrent relationship with a gaseous refrigerant circulated through a work expansion cycle. The work expansion cycle comprises compressing the refrigerant, dividing and cooling the refrigerant to produce at least first and second cooled refrigerant streams, substantially isentropically expanding the first refrigerant stream to a coolest refrigerant temperature, substantially isentropically expanding the second refrigerant stream to an intermediate refrigerant temperature warmer than said coolest refrigerant temperature, and delivering the refrigerant in the first and second refrigerant streams to a respective heat exchanger for cooling the natural gas through corresponding temperature ranges. The refrigerant in the first stream is isentropically expanded to a pressure at least 10 times greater than the total pressure drop of the first refrigerant stream across said series of heat exchangers, said pressure being in the range of 1.2 to 2.5 MPa.
Abstract translation: PCT No.PCT / GB96 / 02443 Sec。 371日期1998年7月13日第 102(e)1998年7月13日PCT PCT 1996年10月4日PCT公布。 公开号WO97 / 13109 日期1997年04月10日天然气液化过程包括使天然气与通过工作膨胀循环循环的气态制冷剂逆流关系的一系列热交换器。 工作膨胀循环包括压缩制冷剂,分配和冷却制冷剂以产生至少第一和第二冷却的制冷剂流,基本上将第一制冷剂流等效膨胀至最冷的制冷剂温度,基本上将第二制冷剂流等效膨胀至中间制冷剂温度 比所述最冷的制冷剂温度更暖,并且将第一和第二制冷剂流中的制冷剂输送到各自的热交换器,用于在相应的温度范围内冷却天然气。 第一流中的制冷剂被局部膨胀至比所述一系列热交换器上的第一制冷剂流的总压降大至少10倍的压力,所述压力在1.2至2.5MPa的范围内。
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