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公开(公告)号：US09528759B2
公开(公告)日：2016-12-27
申请号：US12117364
申请日：2008-05-08
CPC分类号： F25J3/0209 , F25J1/0022 , F25J1/004 , F25J1/0052 , F25J1/021 , F25J1/023 , F25J1/0238 , F25J1/0241 , F25J1/0265 , F25J1/0283 , F25J3/0233 , F25J3/0257 , F25J2200/02 , F25J2200/40 , F25J2200/70 , F25J2200/78 , F25J2215/04 , F25J2220/62 , F25J2220/64 , F25J2270/12 , F25J2270/88
摘要： An LNG facility employing an enhanced nitrogen removal system that concentrates the amount of nitrogen in the feed stream to a nitrogen removal unit (NRU) to thereby increase the separation efficiency of the NRU. In one embodiment, the nitrogen removal system comprises a multistage separation vessel operable to separate nitrogen from a cooled natural gas stream. At least a portion of the resulting nitrogen-containing stream exiting the multistage separation vessel can be used as a refrigerant, processed to a nitrogen removal unit, and/or utilized as fuel gas for the LNG facility.
摘要翻译： 使用增强除氮系统的LNG设备，其将进料流中的氮气量浓缩到除氮单元（NRU），从而提高NRU的分离效率。 在一个实施方案中，除氮系统包括可操作以将氮气与冷却的天然气流分离的多级分离容器。 离开多级分离容器的所得含氮物流的至少一部分可以用作制冷剂，被处理成除氮单元，和/或用作LNG设备的燃料气体。
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公开(公告)号：US09046302B2
公开(公告)日：2015-06-02
申请号：US13503863
申请日：2010-10-25
CPC分类号： F25J1/0262 , F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0214 , F25J1/0216 , F25J1/0241 , F25J1/0245 , F25J1/0292 , F25J5/002 , F25J2210/06 , F25J2220/64 , F25J2280/02 , F25J2290/32 , F28D7/0066 , F28F27/02
摘要： A fluid is cooled and liquefied in an apparatus with a heat exchanger. A plurality of flow passages has two or more primary groups of one or more primary flow passages. Each primary group carries a part of the fluid stream through the heat exchanger and indirectly cools the part of the fluid stream against a refrigerant in the shell side of the heat exchanger to provide a liquefied fluid stream. A primary inlet header connects the two or more primary groups of primary flow passages to a source of the fluid, and is arranged to split the fluid stream between the two or more primary groups of primary flow passages. Valves are provided for selectively blocking at least one of the two or more primary groups of primary flow passages whilst allowing the fluid stream to flow through the remaining unblocked primary groups of primary flow passages.
摘要翻译： 流体在具有热交换器的装置中被冷却和液化。 多个流动通道具有一个或多个主流动通道的两个或更多个主要组。 每个初级组通过热交换器携带流体流的一部分，并且间接冷却流体流的一部分，使其抵靠在热交换器的壳侧的制冷剂，以提供液化流体流。 主入口集管将两个或更多个初级流动通道的主要组件连接到流体源，并且布置成在主要流动通道的两个或更多个主要组之间分离流体流。 提供阀，用于选择性地阻塞主流动通道的两个或多个主要组中的至少一个，同时允许流体流流过剩余的未阻塞的主流动通道的主要组。
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3.发明申请METHOD AND APPARATUS FOR RECOVERING AND FRACTIONATING A MIXED HYDROCARBON FEED STREAM 审中-公开用于回收和分离混合油料进料流的方法和装置公开(公告)号：US20110036120A1
公开(公告)日：2011-02-17
申请号：US12669073
申请日：2008-07-17
IPC分类号： F25J1/00
CPC分类号： F25J3/0209 , C10L3/10 , F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0057 , F25J1/0214 , F25J1/0216 , F25J1/0241 , F25J1/0292 , F25J3/0233 , F25J3/0238 , F25J3/0242 , F25J3/0247 , F25J2200/04 , F25J2200/70 , F25J2200/72 , F25J2210/06 , F25J2215/62 , F25J2215/64 , F25J2215/66 , F25J2270/02 , F25J2270/12
摘要： A condensed mixed hydrocarbon feed stream (10), recovered from an initial feed stream (8), is fractionated into one ore more fractionated streams. In this process, the condensed mixed hydrocarbon feed stream (10) is separated into at least a first part-feed stream (20) and a second part-feed stream (30). The first part-feed stream (20) is passed into a first gas/liquid separator (14), to provide at least a first fractionated stream in the form of a first gaseous overhead stream (40). A first bottom liquid stream (50) provided by the first gas/liquid separator (14) is passed into a second gas/liquid separator (22) to provide at least a second fractionated stream in the form of a second gaseous overhead stream (70), which is cooled by heat exchange (26) against the second part-feed stream (30).
摘要翻译： 从初始进料流（8）回收的冷凝的混合烃进料流（10）被分馏成一个或多个分馏的料流。 在该方法中，将冷凝的混合烃进料流（10）分离成至少第一份进料流（20）和第二份进料流（30）。 第一部分进料流（20）进入第一气/液分离器（14），以提供呈第一气态塔顶流（40）形式的至少第一分馏流。 由第一气/液分离器（14）提供的第一底部液体流（50）被送入第二气/液分离器（22），以提供至少第二气态塔顶流（70）形式的分馏流 ），其通过与第二部分进料流（30）的热交换（26）而冷却。
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公开(公告)号：US20080028790A1
公开(公告)日：2008-02-07
申请号：US11707787
申请日：2007-02-16
申请人： John Wilkinson , Hank Hudson , Kyle Cuellar
发明人： John Wilkinson , Hank Hudson , Kyle Cuellar
IPC分类号： F25J1/00
CPC分类号： F25J1/0205 , F25J1/0022 , F25J1/0042 , F25J1/0052 , F25J1/0057 , F25J1/0214 , F25J1/0216 , F25J1/0239 , F25J1/0241 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J3/0242 , F25J3/0247 , F25J2200/02 , F25J2200/04 , F25J2200/70 , F25J2200/72 , F25J2200/74 , F25J2200/76 , F25J2200/78 , F25J2205/04 , F25J2230/08 , F25J2230/60 , F25J2235/60 , F25J2240/02 , F25J2240/30 , F25J2240/40 , F25J2245/02 , F25J2270/02 , F25J2270/12 , F25J2270/60 , F25J2270/66 , F25J2290/40 , F25J2290/62
摘要： A process for liquefying natural gas in conjunction with producing a liquid stream containing predominantly hydrocarbons heavier than methane is disclosed. In the process, the natural gas stream to be liquefied is partially cooled, expanded to an intermediate pressure, and supplied to a distillation column. The bottom product from this distillation column preferentially contains the majority of any hydrocarbons heavier than methane that would otherwise reduce the purity of the liquefied natural gas. The residual gas stream from the distillation column is compressed to a higher intermediate pressure, cooled under pressure to condense it, and then expanded to low pressure to form the liquefied natural gas stream.
摘要翻译： 公开了一种液化天然气与生产主要包含比甲烷重的烃的液体流的方法。 在此过程中，待液化的天然气流部分冷却，膨胀至中压，并供给蒸馏塔。 来自该蒸馏塔的底部产物优先含有大于甲烷重量的任何烃类，否则会降低液化天然气的纯度。 将来自蒸馏塔的残余气流压缩至更高的中间压力，在压力下冷却以冷凝，然后膨胀至低压以形成液化的天然气流。
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公开(公告)号：US07010937B2
公开(公告)日：2006-03-14
申请号：US10823248
申请日：2004-04-13
CPC分类号： F25J1/0205 , F25J1/0022 , F25J1/0042 , F25J1/0052 , F25J1/0057 , F25J1/0214 , F25J1/0216 , F25J1/0239 , F25J1/0241 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J3/0242 , F25J3/0247 , F25J2200/02 , F25J2200/04 , F25J2200/70 , F25J2200/72 , F25J2200/74 , F25J2200/76 , F25J2200/78 , F25J2205/04 , F25J2230/08 , F25J2230/60 , F25J2235/60 , F25J2240/02 , F25J2240/30 , F25J2240/40 , F25J2245/02 , F25J2270/02 , F25J2270/12 , F25J2270/60 , F25J2270/66 , F25J2290/40 , F25J2290/62
摘要： A process for liquefying natural gas in conjunction with producing a liquid stream containing predominantly hydrocarbons heavier than methane is disclosed. In the process, the natural gas stream to be liquefied is partially cooled, expanded to an intermediate pressure, and supplied to a distillation column. The bottom product from this distillation column preferentially contains the majority of any hydrocarbons heavier than methane that would otherwise reduce the purity of the liquefied natural gas. The residual gas stream from the distillation column is compressed to a higher intermediate pressure, cooled under pressure to condense it, and then expanded to low pressure to form the liquefied natural gas stream.
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公开(公告)号：US11815308B2
公开(公告)日：2023-11-14
申请号：US16851763
申请日：2020-04-17
发明人： Yijun Liu , Fritz Pierre, Jr.
CPC分类号： F25J1/0022 , F25J1/0035 , F25J1/0072 , F25J1/0215 , F25J1/0237 , F25J1/0241 , F25J2205/30 , F25J2210/06 , F25J2210/62 , F25J2220/64 , F25J2230/20 , F25J2230/30
摘要： A method and apparatus for producing liquefied natural gas. A portion of a natural gas stream is cooled in a first heat exchanger and re-combined with the natural gas stream, and heavy hydrocarbons are removed therefrom to generate a separated natural gas stream and a separator bottom stream. Liquids are separated from the separator bottom stream to form an overhead stream, which is cooled and separated to form a recycle gas stream. The recycle gas stream is compressed. A first portion of the compressed recycle gas stream is directed through the first heat exchanger and directed to the separator as a column reflux stream. The separated to natural gas stream is used as a coolant in the first heat exchanger to thereby generate a pretreated natural gas stream, which is compressed and liquefied.
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公开(公告)号：US20180023889A1
公开(公告)日：2018-01-25
申请号：US15216318
申请日：2016-07-21
CPC分类号： F25J3/0238 , F25J1/0022 , F25J1/0045 , F25J1/0052 , F25J1/0055 , F25J1/0087 , F25J1/0212 , F25J1/0216 , F25J1/0238 , F25J1/0241 , F25J1/0262 , F25J3/0209 , F25J2200/72 , F25J2205/02 , F25J2210/06 , F25J2210/60 , F25J2215/60 , F25J2220/64 , F25J2230/60 , F25J2235/02 , F25J2240/40 , F25J2245/02 , F25J2270/02
摘要： A system and method for integrated heavy hydrocarbon removal in a liquefaction system having a lean natural gas source. An economizer located between a main cryogenic heat exchanger and a reflux drum is provided to cool an overhead vapor stream against a partially condensed stream. In addition, pressure of the natural gas feed stream is maintained into a scrub column. A pressure drop is provided by a valve located between the economizer and the reflux drum on a partially condensed stream withdrawn from the cold end of the warm section of the main cryogenic heat exchanger.
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公开(公告)号：US20160313056A1
公开(公告)日：2016-10-27
申请号：US15104564
申请日：2014-12-26
申请人： CHIYODA CORPORATION
发明人： Yoshitsugi Kikkawa , Koichiro Sakai
CPC分类号： F25J1/0022 , F25J1/0035 , F25J1/0052 , F25J1/0055 , F25J1/0082 , F25J1/0085 , F25J1/0087 , F25J1/021 , F25J1/0216 , F25J1/0218 , F25J1/0239 , F25J1/0241 , F25J1/0262 , F25J1/0292 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J2200/02 , F25J2200/40 , F25J2200/72 , F25J2200/74 , F25J2200/76 , F25J2205/02 , F25J2205/04 , F25J2210/60 , F25J2220/64 , F25J2220/66 , F25J2220/68 , F25J2230/08 , F25J2230/20 , F25J2230/22 , F25J2230/30 , F25J2230/60 , F25J2235/60 , F25J2240/02 , F25J2240/04 , F25J2240/40 , F25J2270/12 , F25J2270/18 , F25J2270/60 , F25J2270/66
摘要： By controlling an excessive rise in the temperature of the material gas that is introduced into the liquefaction unit following the compression by a compressor, the temperature of the material gas may be adjusted to the temperature level at the introduction point of the liquefaction unit. A system (1) for the liquefaction of natural gas, comprises a first expander (3) for expanding natural gas under pressure as material gas; a first cooling unit (10, 11, 12) for cooling the material gas; a distillation unit (15) for reducing or eliminating a heavy component in the material gas by distilling the material gas cooled by the first cooler; a first compressor (4) for receiving a top fraction of the material gas from which the heavy component was reduced or eliminated by the distillation unit; and a liquefaction unit (21) for liquefying a gas phase component separated from the compressed material gas compressed by the first compressor by exchanging heat with a refrigerant.
摘要翻译： 通过控制在压缩机压缩之后引入到液化单元中的原料气体的温度过度上升，可以将材料气体的温度调节到液化单元的导入点处的温度水平。 一种用于液化天然气的系统（1）包括用于在压力下作为原料气体膨胀天然气的第一膨胀器（3） 用于冷却材料气体的第一冷却单元（10,11,12）; 蒸馏单元（15），用于通过蒸馏由第一冷却器冷却的材料气体来减少或消除材料气体中的重组分; 第一压缩机（4），用于接收由所述蒸馏单元减少或消除重组分的原料气体的顶部馏分; 以及液化单元（21），用于液化由与第一压缩机压缩的压缩材料气分离的气相成分与制冷剂进行热交换。
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公开(公告)号：US09151537B2
公开(公告)日：2015-10-06
申请号：US12640026
申请日：2009-12-17
CPC分类号： F25J1/0022 , F25J1/0037 , F25J1/005 , F25J1/0052 , F25J1/0057 , F25J1/0072 , F25J1/0082 , F25J1/0092 , F25J1/0097 , F25J1/0201 , F25J1/0202 , F25J1/0204 , F25J1/0205 , F25J1/0212 , F25J1/0215 , F25J1/0216 , F25J1/0232 , F25J1/0238 , F25J1/0241 , F25J1/0278 , F25J1/0281 , F25J1/0288 , F25J1/0294 , F25J2210/06 , F25J2210/62 , F25J2215/66 , F25J2220/64 , F25J2270/16 , F25J2270/90
摘要： A method and system for optimizing the efficiency of an LNG liquification system of the gas expansion type, wherein an incoming feed gas is first separated in a fractionation column by counter current contact with a cold reflux fluid, and a gaseous stream introduced into the heat exchanger system at a reduced temperature such that an intermediate pinch point is created in the warm composite curve.
摘要翻译： 一种用于优化气体膨胀型LNG液化系统的效率的方法和系统，其中首先通过与冷回流流体的逆流接触在分馏塔中分离进入的原料气体，以及引入到热交换器 系统在降低的温度下使得在热复合曲线中产生中间夹点。
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公开(公告)号：US20130061632A1
公开(公告)日：2013-03-14
申请号：US13669539
申请日：2012-11-06
IPC分类号： F25J1/00
CPC分类号： F25J3/0247 , F25J1/0022 , F25J1/004 , F25J1/0045 , F25J1/0052 , F25J1/0055 , F25J1/0216 , F25J1/0241 , F25J1/0247 , F25J1/0255 , F25J1/0262 , F25J1/0265 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J3/0242 , F25J2200/04 , F25J2200/30 , F25J2200/70 , F25J2200/72 , F25J2200/78 , F25J2205/50 , F25J2215/62 , F25J2215/64 , F25J2215/66 , F25J2245/02 , F25J2270/12 , F25J2270/66 , F25J2280/10
摘要： Process for the liquefaction of natural gas and the recovery of components heavier than methane where natural gas is cooled and separated in a first distillation column into an overhead vapor enriched in methane and a bottoms stream enriched in components heavier than methane, where the first distillation column utilizes a liquefied methane-containing reflux stream. This reflux stream may be provided by a condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed. The bottoms stream may be separated in one or more additional distillation columns to provide one or more product streams, any of which are partially or totally withdrawn as recovered hydrocarbons. A stream of unrecovered liquid hydrocarbons may be combined with either the condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed.
摘要翻译： 天然气的液化过程和比甲烷更重的组分的回收，其中将天然气在第一蒸馏塔中冷却和分离成富含甲烷的塔顶蒸气和富含甲烷重的组分的塔底馏分，其中第一蒸馏塔 利用液化甲烷回流。 该回流可以由塔顶蒸气的冷凝部分或完全冷凝的塔顶蒸气的一部分提供，随后加热。 底部物流可以在一个或多个另外的蒸馏塔中分离以提供一种或多种产物流，其中任何一种作为回收的烃部分或完全取出。 未回收的液体烃流可与塔顶蒸气的冷凝部分或随后加热的完全冷凝的塔顶蒸气的一部分组合。
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