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公开(公告)号：US06347531B1
公开(公告)日：2002-02-19
申请号：US09415636
申请日：1999-10-12
IPC分类号： F25J300
CPC分类号： F25J1/0055 , F25J1/0022 , F25J1/0212 , F25J1/0291 , F25J1/0292 , F25J2220/60
摘要： A method of gas liquefaction wherein the refrigeration to cool and liquefy an essentially water-free feed gas is provided by a single recirculating mixed refrigerant cycle in which refrigeration is provided by the vaporization of two mixed refrigerant streams of different compositions at a lower and higher pressure levels respectively. A lower pressure level vaporizing refrigerant cools the feed gas stream in a first cooling zone and a higher pressure level vaporizing refrigerant further cools and condenses the cooled gas in a second cooling zone to provide the final liquid product. The lower pressure level vaporizing refrigerant is provided by one or more liquids obtained by ambient cooling of compressed mixed refrigerant vapor. The vaporized lower pressure level refrigerant can be returned to the refrigerant compressor at a temperature below ambient, without further warming, and this cool refrigerant is compressed and combined with the vaporized higher pressure level refrigerant, which is returned at about ambient temperature.
摘要翻译： 一种气体液化方法，其中用于冷却和液化基本上无水的进料气体的制冷是通过单个循环混合制冷剂循环提供的，其中通过在较低和较高压力下蒸发不同组成的两种混合制冷剂流来提供制冷 级别。 较低压力水平的蒸发制冷剂在第一冷却区域中冷却进料气流，并且较高压力水平的蒸发制冷剂进一步冷却并冷凝第二冷却区中的冷却气体以提供最终的液体产物。 低压级蒸发制冷剂由通过压缩混合制冷剂蒸汽的环境冷却而获得的一种或多种液体提供。 蒸发的低压级制冷剂可以在低于环境温度的温度下返回到制冷剂压缩机，而不会进一步升温，并且该冷却的制冷剂被压缩并与在大约环境温度下返回的蒸发的高压级制冷剂组合。
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公开(公告)号：US6119479A
公开(公告)日：2000-09-19
申请号：US208562
申请日：1998-12-09
CPC分类号： F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0097 , F25J1/0214 , F25J1/0231 , F25J1/0267 , F25J1/0278 , F25J1/0291 , F25J1/0292 , F25J2220/62 , F25J2220/64 , F25J2245/02
摘要： Process and system for liquefying a pressurized gas, especially natural gas. The process is carried out in two heat exchangers, and cooling for each heat exchanger is provided by a mixed refrigerant which is vaporized at a single essentially constant pressure. Feed precooling, low level refrigerant precooling, and high level liquid refrigerant subcooling are effected in one of the heat exchanger against low level refrigerant vaporizing at a single essentially constant pressure. The process and system of the invention are especially well-suited for installation on ships, barges, and offshore platforms.
摘要翻译： 用于液化加压气体，特别是天然气的方法和系统。 该方法在两个热交换器中进行，每个热交换器的冷却由在单个基本恒定的压力下汽化的混合制冷剂提供。 进料预冷却，低水平制冷剂预冷却和高液位制冷剂过冷却在一个热交换器中进行，以低压制冷剂在单个基本恒定的压力下蒸发。 本发明的方法和系统特别适用于船舶，驳船和海上平台上的安装。
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公开(公告)号：US06308531B1
公开(公告)日：2001-10-30
申请号：US09416042
申请日：1999-10-12
IPC分类号： F25J100
CPC分类号： F25J1/0052 , F25J1/0022 , F25J1/0037 , F25J1/004 , F25J1/0042 , F25J1/005 , F25J1/0055 , F25J1/0057 , F25J1/0072 , F25J1/0097 , F25J1/0207 , F25J1/0214 , F25J1/0215 , F25J1/0216 , F25J1/0217 , F25J1/0218 , F25J1/0219 , F25J1/0267 , F25J1/0274 , F25J1/0288 , F25J1/0291 , F25J1/0292 , F25J2220/62 , F25J2220/64 , F25J2245/02
摘要： Refrigeration process for gas liquefaction which utilizes one or more vaporizing refrigerant cycles to provide refrigeration below about −40° C. and a gas expander cycle to provide refrigeration below about −100° C. Each of these two types of refrigerant systems is utilized in an optimum temperature range which maximizes the efficiency of the particular system. A significant fraction of the total refrigeration power required to liquefy the feed gas (typically more than 5% and often more than 10% of the total) can be consumed by the vaporizing refrigerant cycles. The invention can be implemented in the design of a new liquefaction plant or can be utilized as a retrofit or expansion of an existing plant by adding gas expander refrigeration circuit to the existing plant refrigeration system.
摘要翻译： 用于气体液化的制冷方法，其利用一个或多个蒸发的制冷剂循环来提供低于约-40℃的制冷，以及气体膨胀器循环以提供低于约-100℃的制冷。这两种类型的制冷剂系统中的每一种用于 最佳的温度范围，使特定系统的效率最大化。 液化进料气体所需的总制冷功率（通常大于5％，通常大于总量的10％）的很大一部分可以通过汽化制冷剂循环来消耗。 本发明可以在新的液化设备的设计中实施，或者可以通过向现有的工厂制冷系统添加气体膨胀器制冷回路来利用现有设备的改造或扩建。
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公开(公告)号：US06298688B1
公开(公告)日：2001-10-09
申请号：US09415996
申请日：1999-10-12
IPC分类号： F25J300
CPC分类号： F25J1/0037 , F25J1/0012 , F25J1/0015 , F25J1/004 , F25J1/0052 , F25J1/0055 , F25J1/0219 , F25J1/0282 , F25J1/0283 , F25J1/0284 , F25J1/0285 , F25J1/0288 , F25J1/0291 , F25J2230/20 , F25J2230/30
摘要： A process for gas liquefaction, particularly nitrogen liquefaction, which combines the use of a nitrogen autorefrigeration cooling cycle with one or more closed-loop refrigeration cycles using two or more refrigerant components. The closed-loop refrigeration cycle or cycles provide refrigeration in a temperature range having a lowest temperature between about −125° F. and about −250° F. A nitrogen expander cycle provides additional refrigeration, a portion of which is provided at temperatures below the lowest temperature of the closed-loop or recirculating refrigeration cycle or cycles. The lowest temperature of the nitrogen expander cycle refrigeration range is between about −220° F. and about −320° F. The combined use of the two different refrigerant systems allows each system to operate most efficiently in the optimum temperature range, thereby reducing the power consumption required for liquefaction.
摘要翻译： 一种用于气体液化，特别是氮液化的方法，其结合了使用两个或多个制冷剂组分的氮自动制冷冷却循环与一个或多个闭环制冷循环的使用。 闭环制冷循环或循环在具有约-125°F至约-22°F之间的最低温度的温度范围内提供制冷。氮气扩张器循环提供额外的制冷，其一部分在低于 闭环或循环制冷循环的最低温度或循环。 氮气膨胀机循环制冷范围的最低温度为约-220°F至约-320°F。两种不同制冷剂系统的组合使用允许每个系统在最佳温度范围内最有效地运行，从而减少 液化所需的功耗。
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5.发明授权Gas liquefaction process with partial condensation of mixed refrigerant at intermediate temperatures 失效在中等温度下混合制冷剂部分冷凝的气液化过程公开(公告)号：US06347532B1
公开(公告)日：2002-02-19
申请号：US09415837
申请日：1999-10-12
IPC分类号： F25J100
CPC分类号： F25J1/0022 , F25J1/0055 , F25J1/0057 , F25J1/0214 , F25J1/0216 , F25J1/0239 , F25J1/0241 , F25J1/0249 , F25J1/0292 , F25J1/0296 , F25J2205/02 , F25J2205/90 , F25J2220/64
摘要： Method of producing liquefied natural gas (LNG) whereby refrigeration for cooling and liquefaction is provided by a mixed refrigerant system precooled by another refrigeration system. At least one liquid stream is derived from the partial condensation and separation of the mixed refrigerant at a temperature higher than the lowest temperature provided by the precooling system when the mixed refrigerant is condensed at a final highest pressure. When the mixed refrigerant is condensed at a pressure lower than the final highest pressure, condensation is effected at a temperatures equal or higher than the lowest temperature provided by the precooling system. The mixed refrigerant liquid is used to provide refrigeration at a temperature lower than that provided by the precooling system.
摘要翻译： 生产液化天然气（LNG）的方法，其中用于冷却和液化的制冷由另一制冷系统预冷却的混合制冷剂系统提供。 当混合制冷剂在最终最高压力下冷凝时，至少一种液体流源自在比预冷系统提供的最低温度高的温度下混合制冷剂的部分冷凝和分离。 当混合的制冷剂在低于最终最高压力的压力下冷凝时，在等于或高于由预冷却系统提供的最低温度的温度下进行冷凝。 混合的制冷剂液体用于在比预冷系统提供的温度低的温度下提供制冷。
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公开(公告)号：US06269655B1
公开(公告)日：2001-08-07
申请号：US09633794
申请日：2000-08-07
IPC分类号： G25J100
CPC分类号： F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0097 , F25J1/0214 , F25J1/0231 , F25J1/0267 , F25J1/0278 , F25J1/0291 , F25J1/0292 , F25J2220/62 , F25J2220/64 , F25J2240/40 , F25J2245/02
摘要： Process and system for liquefying a pressurized gas, especially natural gas. The process is carried out in two heat exchangers, and cooling for each heat exchanger is provided by a mixed refrigerant which is vaporized at a single essentially constant pressure. Feed precooling, low level refrigerant precooling, and high level liquid refrigerant subcooling are effected in one of the heat exchanger against low level refrigerant vaporizing at a single essentially constant pressure. The process and system of the invention are especially well-suited for installation on ships, barges, and offshore platforms.
摘要翻译： 用于液化加压气体，特别是天然气的方法和系统。 该方法在两个热交换器中进行，每个热交换器的冷却由在单个基本恒定的压力下汽化的混合制冷剂提供。 进料预冷却，低水平制冷剂预冷却和高液位制冷剂过冷却在一个热交换器中进行，以低压制冷剂在单个基本恒定的压力下蒸发。 本发明的方法和系统特别适用于船舶，驳船和海上平台上的安装。
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公开(公告)号：USRE39637E1
公开(公告)日：2007-05-22
申请号：US10669121
申请日：2003-09-23
IPC分类号： F25J1/00
CPC分类号： F25J1/0052 , F25J1/0022 , F25J1/0037 , F25J1/004 , F25J1/0042 , F25J1/005 , F25J1/0055 , F25J1/0057 , F25J1/0072 , F25J1/0097 , F25J1/0207 , F25J1/0214 , F25J1/0215 , F25J1/0216 , F25J1/0217 , F25J1/0218 , F25J1/0219 , F25J1/0267 , F25J1/0274 , F25J1/0288 , F25J1/0291 , F25J1/0292 , F25J2220/62 , F25J2220/64 , F25J2245/02
摘要： Refrigeration process for gas liquefaction which utilizes one or more vaporizing refrigerant cycles to provide refrigeration below about −40° C. and a gas expander cycle to provide refrigeration below about −100° C. Each of these two types of refrigerant systems is utilized in an optimum temperature range which maximizes the efficiency of the particular system. A significant fraction of the total refrigeration power required to liquefy the feed gas (typically more than 5% and often more than 10% of the total) can be consumed by the vaporizing refrigerant cycles. The invention can be implemented in the design of a new liquefaction plant or can be utilized as a retrofit or expansion of an existing plant by adding gas expander refrigeration circuit to the existing plant refrigeration system. Method for the liquefaction of a feed gas which comprises providing at least a portion of the total refrigeration required to cool and condense the feed gas by utilizing a first refrigeration system comprising at least one recirculating refrigeration circuit, wherein the first refrigeration system utilizes two or more refrigerant components and provides refrigeration in a first temperature range, and a second refrigeration system which provides refrigeration in a second temperature range by work expanding a pressurized gaseous refrigerant stream. Compressed refrigerant in the first refrigeration system may be cooled by refrigeration provided by a third refrigeration system. Compressed refrigerant in the second refrigeration system may be cooled by refrigeration provided by a third refrigeration system. At least a portion of the pressurized gaseous refrigerant stream, prior to work expansion, may be entirely cooled separately from cooling of the feed gas.
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公开(公告)号：US08612432B2
公开(公告)日：2013-12-17
申请号：US12816389
申请日：2010-06-16
CPC分类号： G06F17/30979
摘要： A tree structure has a node associated with each category of a hierarchy of item categories. Child nodes of the tree are associated with sub-categories of the categories associated with parent nodes. Training data including received queries and indicators of a selected item category for each received query is combined with the tree structure by associating each query with the node corresponding to the selected category of the query. When a query is received, a classifier is applied to the nodes to generate a probability that the query is intended to match an item of the category associated with the node. The classifier is applied until the probability is below a threshold. One or more categories associated with the nodes that are closest to the intent of the received query are selected and indicators of items of those categories that match the received query are output.
摘要翻译： 树结构具有与项目类别的层次结构的每个类别相关联的节点。 树的子节点与与父节点相关联的类别的子类别相关联。 通过将每个查询与对应于所选择的查询类别的节点相关联，将包括接收到的查询和针对每个接收到的查询的所选项目类别的指示符的训练数据与树结构组合。 当接收到查询时，分类器被应用于节点以产生查询旨在匹配与节点相关联的类别的项目的概率。 应用分类器直到概率低于阈值。 选择与接收到的查询的意图最接近的节点相关联的一个或多个类别，并输出与接收到的查询匹配的那些类别的项目的指示符。
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9.发明授权Methods and systems for visually distinguishing user attribute similarities and differences 有权用于视觉区分用户属性相似性和差异的方法和系统公开(公告)号：US08413060B1
公开(公告)日：2013-04-02
申请号：US12000846
申请日：2007-12-18
申请人： Rakesh Agrawal
发明人： Rakesh Agrawal
CPC分类号： H04L51/04
摘要： Methods, computer-readable storage media, and systems are provided to facilitate visually distinguishing common attributes of users an electronic communication network or messaging service. In particular, user profile attributes are compared between a first and second user, and similar attributes are visually highlighted by assigning, for example, a distinct font, font size, color, font effect, and/or other visual effect to the user's screen name to designate which attributes are similar. In addition, or alternatively, when the first user views a user profile of the second user, common user attributes are visually highlighted. In one embodiment, the font, font size, color, and/or font effect assigned to the highlighted attribute indicates a degree of similarity of the attribute. Such implementations may allow users to more easily recognize and interact with others that have similar interests and attributes.
摘要翻译： 提供方法，计算机可读存储介质和系统以便于在电视通信网络或消息服务的视觉上区分用户的公共属性。 特别地，在第一和第二用户之间比较用户简档属性，并且通过向用户的屏幕名称分配例如不同的字体，字体大小，颜色，字体效果和/或其他视觉效果来视觉突出类似的属性 指定哪些属性相似。 另外或替代地，当第一用户查看第二用户的用户简档时，公共用户属性被视觉上突出显示。 在一个实施例中，分配给突出显示的属性的字体，字体大小，颜色和/或字体效果指示属性的相似程度。 这样的实现可以允许用户更容易地识别和与具有相似兴趣和属性的其他人交互。
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公开(公告)号：US08244747B2
公开(公告)日：2012-08-14
申请号：US11566931
申请日：2006-12-05
IPC分类号： G06F17/30
CPC分类号： G06F17/30448 , G06F17/30557
摘要： An implementation wherein RFID data is shared across independent organizations has been addressed. RFID data is usually spread across different parties, e.g. enterprises in a supply chain and thus, efficient query processing across all parties is required. Traceability is emerging as one of the key applications of RFID technology. A generic data model is introduced for querying RFID data across a network of independently operated data sources. The model can be used to facilitate traceability query processing and give a set of representative traceability queries. A newly designed process-and-forward approach is implemented for executing traceability queries.
摘要翻译： 解决了RFID数据在独立组织之间共享的实现。 RFID数据通常分布在不同方面，例如 供应链中的企业，因此需要各方有效的查询处理。 可追溯性正在成为RFID技术的关键应用之一。 引入了通用数据模型，用于通过独立运行的数据源网络查询RFID数据。 该模型可用于促进可追溯性查询处理，并提供一组具有代表性的可追溯性查询。 实施新设计的进程和转发方法来执行可追溯性查询。
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