公开(公告)号：US06705113B2

公开(公告)日：2004-03-16

申请号：US10342998

申请日：2003-01-15

申请人： Vitus Tuan Wei ,  Qi Ma ,  James Tzong-Chaur Wu ,  Charles Sumner

发明人： Vitus Tuan Wei ,  Qi Ma ,  James Tzong-Chaur Wu ,  Charles Sumner

IPC分类号： F25J100

CPC分类号： F25J3/0252 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2210/12 ,  F25J2215/60 ,  F25J2215/62 ,  F25J2270/12 ,  F25J2270/18 ,  F25J2270/66 ,  F25J2270/902 ,  Y10S62/913

摘要： The refrigeration system for an ethylene plant comprises a closed loop tertiary refrigerant system containing methane, ethylene and propylene. The tertiary refrigerant from a compressor final discharge is separated into a methane-rich vapor fraction and two levels of propylene-rich liquids so as to provide various temperatures and levels of refrigeration in various heat exchange stages while maintaining a nearly constant refrigerant composition flowing back to the compressor and with the bulk of the total return refrigerant flow going to the first stage compressor section. This tertiary system can also be applied to an ethylene plant with a high pressure demethanizer.

摘要翻译： 用于乙烯装置的制冷系统包括含有甲烷，乙烯和丙烯的闭环三级制冷剂系统。 来自压缩机最终排放物的三级制冷剂被分离成富含甲烷的蒸气馏分和两级富含丙烯的液体，以便在各种热交换阶段中提供各种温度和水平的制冷，同时保持几乎恒定的制冷剂组合物流回 压缩机和总返回制冷剂的大部分流入第一级压缩机段。 该三级体系也可应用于具有高压脱甲烷塔的乙烯装置。

公开(公告)号：US06487877B1

公开(公告)日：2002-12-03

申请号：US10136999

申请日：2002-05-01

申请人： John Louis Griffiths ,  Adam Adrian Brostow ,  Declan Patrick O'Connor ,  Swaninathan Sunder ,  Patrick Alan Houghton

发明人： John Louis Griffiths ,  Adam Adrian Brostow ,  Declan Patrick O'Connor ,  Swaninathan Sunder ,  Patrick Alan Houghton

IPC分类号： F25J300

CPC分类号： F25J3/04636 ,  F25J3/0406 ,  F25J3/04163 ,  F25J3/04242 ,  F25J3/04254 ,  F25J3/044 ,  F25J3/08 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2205/02 ,  F25J2205/20 ,  F25J2205/30 ,  F25J2205/80 ,  F25J2205/84 ,  F25J2210/42 ,  F25J2215/42 ,  F25J2220/40 ,  F25J2235/42 ,  F25J2235/52 ,  F25J2240/22 ,  F25J2240/90 ,  F25J2250/42 ,  F25J2250/52 ,  Y10S62/908 ,  Y10S62/913

摘要： A process for producing a nitrogen-enriched vapor product from a supply of a nitrogen-rich liquid uses a purifying device and a distillation column having a distillation zone. The process includes the steps of: feeding at least a portion of the supply of the nitrogen-rich liquid to the distillation zone at a first location; feeding a stream of a gas containing nitrogen and at least one contaminant to the purifying device, wherein the gas is cooled by a cryogenic liquid whereby at least a portion of the at least one contaminant condenses, solidifies, or dissolves; eventually feeding at least a portion of the cool gas from the purifying device to the distillation zone at a second location below the first location; withdrawing a stream of the nitrogen-enriched vapor product from the distillation zone; and withdrawing a stream of an oxygen-enriched liquid from the distillation zone.

摘要翻译： 从富氮液体的供给产生富氮蒸气产物的方法使用具有蒸馏区的净化装置和蒸馏塔。 该方法包括以下步骤：在第一位置将至少一部分富氮液体供应给蒸馏区; 将含有氮气和至少一种污染物的气体流供给到净化装置，其中气体由低温液体冷却，由此至少一部分污染物冷凝，固化或溶解; 最终在第一位置下方的第二位置将至少一部分冷气从净化装置进料到蒸馏区; 从蒸馏区抽出富氮蒸气产物流; 以及从所述蒸馏区抽出富氧液体流。

公开(公告)号：US20020170313A1

公开(公告)日：2002-11-21

申请号：US10094137

申请日：2002-03-11

申请人： LINDE AKTIENGESELLSCHAFT

发明人： Gerhard Zapp ,  Christian Kunz

IPC分类号： F25J003/00

CPC分类号： F25J3/04824 ,  F25J3/0409 ,  F25J3/04157 ,  F25J3/04218 ,  F25J3/04296 ,  F25J3/04375 ,  F25J3/04412 ,  F25J3/04545 ,  F25J3/04563 ,  F25J3/04575 ,  F25J3/04606 ,  F25J3/04878 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2205/32 ,  F25J2210/04 ,  F25J2215/02 ,  F25J2215/40 ,  F25J2215/54 ,  F25J2240/44 ,  F25J2240/46 ,  F25J2245/42 ,  F25J2245/50 ,  Y10S62/913 ,  Y10S62/915

摘要： The process and the apparatus serve for separating a gas mixture in a separation plant. A feed gas (18) is introduced into a compressor system (6, 16) and then into the separation plant. In the event of loss or partial loss of the compressor system (6, 16) of the first feed gas compressor (6), a first auxiliary stream (91, 92) which has approximately the composition of the first product stream or approximately the composition of the feed gas is compressed (78, 89) to at least approximately the first pressure and is recirculated to the separation plant.

摘要翻译： 该方法和装置用于分离分离装置中的气体混合物。 将进料气体（18）引入压缩机系统（6,16）中，然后进入分离设备。 在第一进料气体压缩机（6）的压缩机系统（6,16）的损失或部分损失的情况下，具有大致组成第一产物流或大致组成的第一辅助流（91,92） 的进料气体被压缩（78,89）至少大约第一压力并被再循环到分离设备。

公开(公告)号：US06253574B1

公开(公告)日：2001-07-03

申请号：US09403103

申请日：2000-03-24

申请人： Rudolf Stockmann ,  Wolfgang Forg ,  Manfred Bolt ,  Manfred Steinbauer ,  Christian Pfeiffer ,  Pentti Paurola ,  Arne Olav Fredheim ,  Oystein Sorensen

发明人： Rudolf Stockmann ,  Wolfgang Forg ,  Manfred Bolt ,  Manfred Steinbauer ,  Christian Pfeiffer ,  Pentti Paurola ,  Arne Olav Fredheim ,  Oystein Sorensen

IPC分类号： F25J100

CPC分类号： F25J3/0257 ,  F25J1/0022 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0217 ,  F25J1/0238 ,  F25J1/0248 ,  F25J1/0262 ,  F25J1/0264 ,  F25J1/0283 ,  F25J1/029 ,  F25J1/0291 ,  F25J1/0292 ,  F25J1/0294 ,  F25J3/0209 ,  F25J3/0233 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2210/06 ,  F25J2215/04 ,  F25J2220/64 ,  F25J2290/32 ,  F25J2290/62 ,  Y10S62/913

摘要： The invention relates to a method for liquefying a stream rich in hydrocarbons, especially a stream of natural gas, by the indirect exchange of heat with the refrigerants in a closed-circuit cascade of mixed refrigerants. According to the invention, said closed-circuit cascade of mixed refrigerants consists of at least 3 circuits of mixed refrigerants, with each circuit comprising different refrigerants. The first of the three mixed refrigerant circuits is used for pre-cooling (E1), the second for liquefying E2), and the third for super-cooling (E3) the hydrocarbon-rich stream (1) to be liquefied. The method provided for in the invention reduces specific energy consumption and investment costs since the three circuits of mixed refrigerants are or can be optimally adjusted to the enthalpy temperature curves of the hydrocarbon-rich stream to be liquefied and the refrigerant mixtures.

摘要翻译： 本发明涉及一种通过在混合制冷剂的闭路级联中间歇地与制冷剂交换来液化富含烃，特别是天然气流的方法。 根据本发明，所述混合制冷剂的闭路级联由至少3个混合制冷剂回路组成，每个回路包括不同的制冷剂。 三个混合制冷剂回路中的第一个用于预冷（E1），第二个用于液化E2），第三个用于超冷却（E3）待液化的富烃流（1）。 本发明提供的方法降低了比能耗和投资成本，因为混合制冷剂的三个回路可以被最佳地调整为要液化的富烃流的焓温曲线和制冷剂混合物。

公开(公告)号：US5943881A

公开(公告)日：1999-08-31

申请号：US891133

申请日：1997-07-10

申请人： Maurice Grenier

发明人： Maurice Grenier

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

CPC分类号： F25J1/0022 ,  F25J1/0042 ,  F25J1/0055 ,  F25J1/0092 ,  F25J1/0212 ,  F25J1/0214 ,  F25J1/0215 ,  F25J1/0262 ,  F25J1/0268 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/64 ,  Y10S62/912 ,  Y10S62/913

摘要： A refrigerating mixture is compressed in the penultimate stage of a plurality of stages of a compression unit. The mixture is partially condensed in order to cool it substantially to ambient temperature; the condensed mixture is separated in order to obtain a vapour fraction and a liquid fraction; the vapour fraction is cooled and partially condensed; the resultant vapour fraction is sent to the final compression stage at least the high pressure vapour fraction and the liquid fraction are cooled, expanded, and circulated in at least first heat exchange means (5) with the fluid to be cooled.Moreover, according to the invention, during condensation of the vapour fraction, the vapour fraction produced by separating the condensed mixture is cooled by circulating it in heat-exchange relationship with a refrigerating fluid, in second heat exchange means.

摘要翻译： 在压缩单元的多级的倒数第二级中压缩制冷混合物。 将混合物部分冷凝以将其基本上冷却至环境温度; 将冷凝的混合物分离以获得蒸气馏分和液体馏分; 蒸气馏分被冷却并部分冷凝; 将所得蒸气馏分送至最终压缩阶段，至少将高压蒸汽馏分和液体馏分冷却，膨胀，并在至少第一热交换装置（5）中与要冷却的流体循环。 此外，根据本发明，在蒸气馏分冷凝期间，通过分离冷凝的混合物产生的蒸气馏分在第二热交换装置中通过与制冷流体的热交换关系循环来冷却。

公开(公告)号：US5638699A

公开(公告)日：1997-06-17

申请号：US685624

申请日：1996-07-24

申请人： Takao Yamamoto ,  Shingo Koizumi

发明人： Takao Yamamoto ,  Shingo Koizumi

IPC分类号： F25J3/04

CPC分类号： F25J3/044 ,  F25J3/04163 ,  F25J3/04169 ,  F25J3/04254 ,  F25J3/0426 ,  F25J3/04836 ,  F25J2200/72 ,  F25J2205/82 ,  F25J2210/42 ,  F25J2215/44 ,  F25J2245/42 ,  F25J2245/90 ,  F25J2250/42 ,  F25J2290/62 ,  Y10S62/913

摘要： A high purity nitrogen gas generator is provided which can be rapidly returned to a stable state when boil-off gas is generated in a liquid nitrogen storage tank 10. The high purity nitrogen gas generator includes a liquid nitrogen storage tank 10, a rectification column 7, a liquid nitrogen introduction pipe P15 for supplying liquid nitrogen from the liquid nitrogen storage tank to the rectification column, an inverted U-type pipe P13 whose upper end is positioned at a height in the vicinity of the top portion of said liquid nitrogen storage tank connected to the bottom portion of said liquid nitrogen storage tank 10, said liquid nitrogen storage tank 10 and said liquid nitrogen introduction pipe P15 being connected with each other by way of said inverted U-type pipe, the upper end of the inverted U-type pipe and the top portion of said liquid nitrogen storage tank are connected with each other by means of a pipe P17 and a control valve V3 provided on the way of said pipe P17.

摘要翻译： 提供了一种高纯度氮气发生器，其在液氮储存罐10中产生蒸发气体时能迅速恢复到稳定状态。高纯度氮气发生器包括液氮储存罐10，精馏塔7 用于从液氮罐向精馏塔供给液氮的液氮导入管P15，其上端位于液氮罐顶部附近的高度的倒U型管P13 连接到所述液氮储存罐10的底部，所述液氮储存罐10和所述液氮引入管P15通过所述倒U型管连接，所述倒U型管的上端 管道和所述液氮储罐的顶部通过管道P17和设置在所述管道P17的路上的控制阀V3相互连接。

公开(公告)号：US5638698A

公开(公告)日：1997-06-17

申请号：US701372

申请日：1996-08-22

申请人： Mary Anne Knight ,  James Joseph Maloney

发明人： Mary Anne Knight ,  James Joseph Maloney

IPC分类号： B01D5/00 ,  B01D8/00 ,  C01B21/04 ,  F25J3/06 ,  F25J3/08

CPC分类号： F25J3/08 ,  B01D5/0027 ,  B01D8/00 ,  C01B21/0433 ,  C01B2210/0068 ,  F25J2200/02 ,  F25J2205/02 ,  F25J2205/20 ,  F25J2205/60 ,  F25J2210/04 ,  F25J2210/42 ,  F25J2215/02 ,  F25J2215/42 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2270/904 ,  Y10S62/913 ,  Y10S62/927

摘要： A system for processing nitrogen-containing effluent from an industrial process wherein the effluent is cooled and liquid nitrogen is added directly to the cooled effluent. The direct contact and heat exchange produces gaseous nitrogen and liquid organics which are both used to cool the effluent and are subsequently recovered.

摘要翻译： 一种用于处理来自工业过程的含氮流出物的系统，其中将流出物冷却并将液氮直接加入到冷却的流出物中。 直接接触和热交换产生气态氮和液体有机物，其都用于冷却流出物并随后回收。

公开(公告)号：US5629208A

公开(公告)日：1997-05-13

申请号：US463741

申请日：1995-06-05

申请人： Bernard Darredeau ,  Amelie Jacomet

发明人： Bernard Darredeau ,  Amelie Jacomet

IPC分类号： F25J3/04 ,  F25J3/00

CPC分类号： F25J3/0486 ,  F25J3/04412 ,  F25J2220/52 ,  Y10S62/913 ,  Y10T436/115831 ,  Y10T436/12 ,  Y10T436/17 ,  Y10T436/177692

摘要： A method for the control of the operation of an installation for the separation of air by cryogenic distillation comprising a double distillation column wherein the top of a medium pressure column and the base of a low pressure column are thermally interconnected by a vaporizer-condenser supplied with liquid oxygen from a bath of liquid oxygen in the base of the low pressure column. Liquid oxygen from the bath is continuously tested to detect the content of nitrous oxide in the bath, and upon the detection of a fall in the nitrous oxide content of the bath when the installation is operating under equilibrium conditions, the flow of liquid oxygen to the vaporizer-condenser is increased to raise the detected nitrous oxide content of the bath. But when the detected nitrous oxide level falls, then either a liquid oxygen purge line is opened farther, or else the operating time or pressure of switching adsorbers in the air supply is changed.

摘要翻译： 一种用于控制用于通过低温蒸馏分离空气的装置的操作的方法，其包括双蒸馏塔，其中中压塔的顶部和低压塔的底部通过被供应的蒸发器 - 冷凝器热互连 来自低压塔底部的液氧浴的液氧。 连续测试来自浴液的液氧，以检测浴中一氧化二氮的含量，并且当安装在平衡条件下操作时检测到浴的一氧化二氮含量的下降，液氧流向 蒸发器 - 冷凝器增加以提高检测到的一氧化二氮含量。 但是，当检测到的一氧化二氮水平下降时，则将液氧吹扫管线打开得更远，否则空气供应中的开关吸附器的操作时间或压力发生变化。

公开(公告)号：US5592834A

公开(公告)日：1997-01-14

申请号：US509137

申请日：1995-07-31

申请人： Bernard Darredeau ,  Jean-Yves Lehman ,  Jean-Marc Peyron

发明人： Bernard Darredeau ,  Jean-Yves Lehman ,  Jean-Marc Peyron

IPC分类号： C21C5/28 ,  F25J3/04 ,  F25J3/00

CPC分类号： F25J3/0449 ,  C21C5/28 ,  C21C5/285 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04412 ,  F25J3/04545 ,  F25J3/04563 ,  F25J3/04575 ,  F25J3/04593 ,  F25J3/046 ,  F25J3/04606 ,  F25J3/04793 ,  F25J3/04896 ,  F25J3/04927 ,  F25J2240/80 ,  Y02E20/16 ,  Y02E20/18 ,  Y02P10/34 ,  Y10S62/913 ,  Y10S62/915

摘要： A process and installation for the separation of air in a cryogenic distillation apparatus (24) comprising a distillation column (30, 42) and in which the supplied air is separated to produce a fraction rich in oxygen and a fraction rich in nitrogen as products. The purities of these products are maintained substantially constant during variations of demand of either product or of the flow rate or of the pressure of the supplied air by introducing an excess of liquid rich in nitrogen into the distillation apparatus when the demand for the product or the flow rate of the supplied air increases, and by withdrawing an excess of liquid rich in nitrogen from the distillation apparatus, and storing this liquid, when the demand for the product or the flow rate of the supplied air decreases. The apparatus comprises a medium pressure column (30) and a low pressure column (42) and a reflux conduit (44; 11, 12) which permits a reflux liquid to be withdrawn from the medium pressure column (30) and to be injected into the low pressure column (42).

摘要翻译： 一种用于在包含蒸馏塔（30,42）的低温蒸馏装置（24）中分离空气的方法和装置，其中供应的空气被分离以产生富含氧的馏分和富含氮的馏分作为产物。 当产品或产品的需求或对产品的需求或对产品的需求或供应空气的压力的变化时，这些产品的纯度通过将富含氮的过量的液体引入蒸馏装置中而保持基本恒定 供给空气的流量增加，并且通过从蒸馏装置中抽出多余的富含氮气的液体，并且当对产品的需求或供给的空气的流量减少时，储存该液体。 该装置包括中压塔（30）和低压塔（42）和回流导管（44; 11,12），其允许回流液体从中压塔（30）中取出并注入 低压塔（42）。

公开(公告)号：US5515688A

公开(公告)日：1996-05-14

申请号：US431851

申请日：1995-05-01

申请人： Norbert Rieth

发明人： Norbert Rieth

IPC分类号： F25J3/04 ,  F25J3/02

CPC分类号： F25J3/04315 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04393 ,  F25J3/04412 ,  F25J2200/20 ,  F25J2205/02 ,  Y10S62/913

摘要： Process and installation for the production of gaseous oxygen and/or gaseous nitrogen under pressure, of the type in which the air is distilled in a double distillation column (10) comprising a low pressure column (12) operating under a low pressure, and a medium pressure column (11) operating under a medium pressure. All the air to be distilled is compressed (in 1,4) to at least one high pressure of air substantially greater than the medium pressure, and the compressed air is cooled to an intermediate temperature. A portion of it is expanded in a turbine (5) to the medium pressure, before introducing it into the medium pressure column (11). The non-work-expanded air is liquified, then introduced after expansion (in 19, 20), into the double column; and at least one liquid product withdrawn from the double column is brought to the production pressure, and this liquid product is vaporized by heat exchange with the air. The low pressure column (12) is operated under pressure; and the residual gas from the head of the low pressure column is expanded in the second turbine (8) after having been partially reheated. The low pressure column (12) is operated under a pressure of about 1.7 to 5 bars, and the medium pressure column (11) under a pressure of about 6.5 to 16 bars.

摘要翻译： 在压力下生产气态氧气和/或氮气的方法和装置，其中空气在包括在低压下运行的低压塔（12）的双蒸馏塔（10）中蒸馏， 中压塔（11）在中压下运行。 待蒸馏的所有空气被压缩（1,4）至至少一个高于中压的高压空气，并将压缩空气冷却至中间温度。 在涡轮机（5）中将其一部分在将其引入中压塔（11）之前膨胀至中压。 非工作膨胀空气液化，然后在膨胀后（19,20）引入双塔; 并且从双塔排出的至少一种液体产物达到生产压力，并且该液体产物通过与空气的热交换而汽化。 低压塔（12）在压力下运行; 并且在部分再加热之后，来自低压塔的头部的残留气体在第二涡轮机（8）中膨胀。 低压塔（12）在约1.7至5巴的压力下操作，中压塔（11）在约6.5至16巴的压力下操作。