公开(公告)号：US20180306497A1

公开(公告)日：2018-10-25

申请号：US15956921

申请日：2018-04-19

申请人： L' Air Liquide, Societe Anonyme pour I' Etude et I'Exploitation des Procedes Georges Claude

发明人： Kenji HIROSE ,  Hirofumi Utsunomiya ,  Daisuke Nagata ,  Yasuharu Nishi ,  Shinji Tomita

IPC分类号： F25J3/04

CPC分类号： F25J3/04309 ,  F25J3/04018 ,  F25J3/04187 ,  F25J3/04296 ,  F25J3/044 ,  F25J2215/42 ,  F25J2215/44 ,  F25J2220/50 ,  F25J2230/40

摘要： A nitrogen production system that can produce high purity nitrogen containing a desired concentration of oxygen and ultrahigh purity nitrogen containing a desired concentration of argon in a single rectifying column while restraining increase in electric power consumption, and a production process thereof are provided. The nitrogen production system includes a heat exchanger that cools material air, a nitrogen rectifying column including a rectifying unit into which the material air cooled by the heat exchanger is introduced and a condenser that is located in a column top, a first introduction pipe that introduces the material air from the heat exchanger into a buffer unit located at a lower part from a position of the rectifying unit, a second introduction pipe for introducing an oxygen-enriched liquefied gas into the condenser from the buffer unit of the nitrogen rectifying column, a first derivation pipe for deriving ultrahigh purity nitrogen from the rectifying unit and recovering the ultrahigh purity nitrogen, and a second derivation pipe for deriving high purity nitrogen from an intermediate plate of the rectifying unit and recovering the high purity nitrogen.

公开(公告)号：US20160161180A1

公开(公告)日：2016-06-09

申请号：US14907608

申请日：2013-10-23

申请人： David PARSNICK ,  James P. MEAGHER ,  John F. BILLINGHAM ,  Gerald A. PAOLINO ,  PRAXAIR TECHNOLOGY, INC.

发明人： David Parsnick ,  James Meagher ,  Gerald A. Paolino ,  John F. Billingham

IPC分类号： F25J3/02 ,  F17C13/00 ,  F25J3/04

CPC分类号： F25J3/0295 ,  F17C13/00 ,  F25J3/0409 ,  F25J3/04187 ,  F25J3/04478 ,  F25J3/04818 ,  F25J3/04824 ,  F25J3/0489 ,  F25J3/04963 ,  F25J2235/50 ,  F25J2245/50 ,  F25J2250/50 ,  F25J2290/62

摘要： A method and backup system for backing up a supply oxygen in an air separation plant in which during normal operation, a stream of oxygen-rich liquid is pumped through a main flow path, extending from a surge tank to a heat exchanger, to deliver an oxygen product. The surge tank receives the oxygen-rich liquid from a bottom region of the lower pressure column of the plant. Additionally, during normal operations, a stream of the oxygen-rich liquid is also introduced to a reserve storage tank through a backup flow path. During a transient operation, where the air separation plant has ceased operation, the surge tank is isolated and liquid is pumped from the surge tank through an auxiliary flow path to an auxiliary vaporizer to continue the supply of the oxygen product and the surge tank is replenished with oxygen-rich liquid previously stored in the reserve storage tank.

摘要翻译： 一种用于备份空气分离设备中的供氧的方法和备用系统，其中在正常操作期间，富氧液体流被泵送通过主流路，从缓冲罐延伸到热交换器，以输送 氧气产品。 缓冲罐从工厂的低压塔的底部区域接收富氧液体。 此外，在正常操作期间，富氧液体流也通过备用流动路径被引入储备储罐。 在空分设备停止运行的瞬时操作过程中，缓冲罐是隔离的，液体从缓冲罐通过辅助流动路径泵送到辅助蒸发器，以继续供应氧气产品，并且缓冲罐被补充 其中富氧液体预先储存在储备储罐中。

公开(公告)号：US20140260422A1

公开(公告)日：2014-09-18

申请号：US14291569

申请日：2014-05-30

申请人： L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Jean-Renaud BRUGEROLLE ,  Bao HA

IPC分类号： F25J3/04

CPC分类号： F25J3/04012 ,  F25J3/04 ,  F25J3/04018 ,  F25J3/04024 ,  F25J3/04054 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04109 ,  F25J3/04187 ,  F25J3/042 ,  F25J3/04254 ,  F25J3/04296 ,  F25J3/04381 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04496 ,  F25J3/04812 ,  F25J3/04836 ,  F25J2200/06 ,  F25J2210/06 ,  F25J2210/40 ,  F25J2210/42 ,  F25J2210/50 ,  F25J2230/08

摘要： A compressed air stream is cooled in an exchanger to form a compressed cooled air stream. The stream is then cryogenically compressed in a first compressor to form a first pressurized gas stream. The first pressurized gas stream is further cooled in the exchanger, cryogenically compressed in a second compressor, and then it is cooled and partially liquefied. The cooled and partially liquefied product is then fed to a system of distillation columns. A liquid product is removed from the system of distillation columns. This product is then pressurized, vaporized and warmed in the exchanger to yield pressurized gaseous product.

摘要翻译： 压缩空气流在交换器中冷却以形成压缩的冷却空气流。 然后将流在第一压缩机中低温压缩以形成第一加压气流。 第一加压气流在交换器中进一步冷却，在第二压缩机中进行低温压缩，然后将其冷却并部分液化。 然后将冷却和部分液化的产物进料到蒸馏塔系统。 从蒸馏塔系统中取出液体产物。 然后将该产物在交换器中加压，蒸发和加热以产生加压的气态产物。

公开(公告)号：US20110277500A1

公开(公告)日：2011-11-17

申请号：US13105048

申请日：2011-05-11

申请人： Heinz Bauer ,  Martin Gwinner ,  Daniel Garthe

发明人： Heinz Bauer ,  Martin Gwinner ,  Daniel Garthe

IPC分类号： F25J3/08

CPC分类号： F25J3/0209 ,  F25J3/0233 ,  F25J3/0257 ,  F25J3/0406 ,  F25J3/04187 ,  F25J3/04284 ,  F25J3/0635 ,  F25J2200/04 ,  F25J2200/06 ,  F25J2200/08 ,  F25J2200/38 ,  F25J2200/50 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2200/96 ,  F25J2205/04 ,  F25J2220/66 ,  F25J2235/60 ,  F25J2245/02 ,  F25J2270/02 ,  F25J2270/04 ,  F25J2270/88 ,  Y02C10/12 ,  Y10S62/927

摘要： The invention relates to a method for the separation of a hydrocarbon-rich, nitrogen-containing feed fraction (1, 101), preferably natural gas, wherein the feed fraction (1, 101) is at least in part liquefied (E1, E2) and divided by rectification (T1) into a nitrogen-enriched fraction (14, 110) and a hydrocarbon-rich, nitrogen-depleted fraction (11, 111) and wherein, in the upper region of the rectification (T1), a nitrogen-enriched stream (14) is taken off, cooled (E3) and applied (20) at least in part to the rectification (T1) as reflux and/or the nitrogen-enriched fraction (110) is cooled and partially condensed (E3), applied at least in part to the rectification (T1) as reflux (115) and the remaining stream (116) of the nitrogen-enriched fraction (110) is subjected to a double-column process (T3). According to the invention, in the middle region of the rectification (T1), a carbon-dioxide-poor stream (13, 113) which serves for cooling (E3) the nitrogen-enriched substream (14) and/or cooling (E3) the nitrogen-enriched fraction (110) is taken off and the feed fraction is rectified (T1) in a separation column (T1) having a dividing wall (W), wherein the dividing wall (W) is arranged at least in the region of the separation column (T1) in which the feed fraction (2, 4, 5, 102, 104, 105) is fed to the separation column (T1) and the carbon-dioxide-poor stream (13, 113) is taken off.

摘要翻译： 本发明涉及一种用于分离富含烃的含氮进料馏分（1,101）（优选天然气）的方法，其中进料馏分（1,101）至少部分液化（E1，E2） 并通过精馏（T1）分离成富氮馏分（14,110）和富含烃的贫氮馏分（11,111），其中在精馏（T1）的上部区域中， 冷却（E3）并且至少部分地将精馏（T1）作为回流和/或富氮级分（110）冷却并部分冷凝（E3），将富集的物流（14） 至少部分地作为回流（115）的精馏（T1）施加，富氮级分（110）的剩余物流（116）进行双塔法（T3）。 根据本发明，在整流（T1）的中间区域，用于冷却（E3）富氮子流（14）和/或冷却（E3）的二氧化碳贫流（13,113） 取出富氮馏分（110），在具有分隔壁（W）的分离塔（T1）中进料馏分（T1）进行精馏（T1），其中分隔壁（W）至少排列在 取出供给到分离塔（T1）的进料馏分（2,4,5,102,104,105）和不良的二氧化碳流（13,113）的分离塔（T1）。

公开(公告)号：US20110192194A1

公开(公告)日：2011-08-11

申请号：US12704138

申请日：2010-02-11

申请人： Henry Edward Howard

发明人： Henry Edward Howard

IPC分类号： F25J3/04

CPC分类号： F25J3/0409 ,  F25J3/04084 ,  F25J3/04187 ,  F25J3/042 ,  F25J3/04218 ,  F25J3/04236 ,  F25J3/04296 ,  F25J3/04387 ,  F25J3/04412 ,  F25J2240/10 ,  F25J2290/12

摘要： A method and apparatus for separating a mixture, for example air, within a cryogenic rectification plant that utilizes a banked heat exchanger arrangement. In such arrangement, a lower pressure heat exchanger is used to cool part of the mixture and a higher pressure heat exchanger is used to heat one or more pumped liquid streams composed of separated nitrogen-rich and oxygen-rich fractions and thereby produce pressurized product streams. A boosted pressure stream, that can be part of the air, is utilized to supply most of the heat exchange duty in the higher pressure heat exchanger. In addition, a heat exchange stream, that can also be part of the mixture, can be partially cooled in the higher pressure heat exchanger and then further cooled in the lower pressure heat exchanger to decrease the warm end temperature difference of the higher pressure heat exchanger and therefore, the required refrigeration for the plant.

摘要翻译： 一种在利用堆积式热交换器装置的低温精馏装置内分离混合物，例如空气的方法和装置。 在这种布置中，使用低压热交换器来冷却混合物的一部分，并且使用较高压力的热交换器来加热由分离的富氮和富氧馏分组成的一个或多个泵送液体流，从而产生加压产物流 。 可以使用可以作为空气的一部分的增压压力流来提供高压热交换器中的大部分热交换负荷。 此外，也可以是混合物的一部分的热交换流可以在高压热交换器中被部分冷却，然后在低压热交换器中进一步冷却，以降低高压热交换器的温末温度差 因此，为工厂所需的制冷。

公开(公告)号：US20090071191A1

公开(公告)日：2009-03-19

申请号：US12272193

申请日：2008-11-17

申请人： Peter James Rankin ,  Neil Mark Prosser

发明人： Peter James Rankin ,  Neil Mark Prosser

IPC分类号： F25J3/04 ,  F25J3/00

CPC分类号： F25J3/04387 ,  F25J3/0409 ,  F25J3/04187 ,  F25J3/04315 ,  F25J3/04448 ,  F25J2200/20 ,  F25J2200/50 ,  F25J2200/54 ,  F25J2240/10 ,  F25J2290/12

摘要： A process for carrying out cryogenic air separation wherein liquid oxygen is pressurized and vaporized against condensing feed air to produce oxygen gas product wherein excess plant refrigeration is generated such that the aggregate warm end temperature difference of the process exceeds the minimum internal temperature difference of the primary heat exchanger by at least 2 K.

摘要翻译： 一种用于进行低温空气分离的方法，其中液氧被加压和蒸发以冷凝进料空气以产生氧气产物，其中产生过量的工厂制冷，使得该方法的总体温度结束温度差超过主要温度差的最小内部温度差 热交换器至少2 K.

公开(公告)号：US20080307828A1

公开(公告)日：2008-12-18

申请号：US11818636

申请日：2007-06-15

申请人： Neil Mark Prosser ,  Richard John Jibb

发明人： Neil Mark Prosser ,  Richard John Jibb

IPC分类号： F25J3/04 ,  F25J3/00

CPC分类号： F25J3/04187 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04218 ,  F25J3/0423 ,  F25J3/04236 ,  F25J3/04303 ,  F25J3/04387 ,  F25J3/04412 ,  F25J3/04678 ,  F25J5/00 ,  F25J2240/10 ,  F25J2290/12 ,  F25J2290/32 ,  F25J2290/44

摘要： A compressed air stream is cooled to a temperature suitable for its rectification within a lower pressure heat exchanger and a boosted pressure air stream is liquefied or converted to a dense phase fluid within a higher pressure heat exchanger in order to vaporize pumped liquid products. Thermal balancing within the plant is effectuated with the use of waste nitrogen streams that are introduced into the higher and lower pressure heat exchangers. The heat exchangers are configured such that the flow area for the subsidiary waste nitrogen stream within the higher pressure heat exchanger is less than that would otherwise be required so that the subsidiary waste nitrogen streams were subjected to equal pressure drops in the higher and lower pressure heat exchangers. This allows the higher pressure heat exchanger be fabricated with a reduced height and therefore a decrease in fabrication costs.

摘要翻译： 将压缩空气流冷却到适合于在低压热交换器内进行精馏的温度，并且在高压热交换器中将增压空气流液化或转化成致密相流体，以便蒸发泵送的液体产物。 使用引入高压和低压热交换器的废氮气流来实现设备内的热平衡。 热交换器被构造成使得在高压热交换器内的辅助废氮流的流动面积小于另外需要的流动面积，使得辅助废氮气流在较高和较低的压力热中受到相等的压降 交换器。 这允许以较低的高度制造高压热交换器，因此制造成本降低。

公开(公告)号：US07296437B2

公开(公告)日：2007-11-20

申请号：US11066060

申请日：2005-02-25

申请人： Emmanuel Garnier ,  Daniel Gourdain ,  Frederic Judas ,  Patrick Le Bot ,  Frederic Staine

发明人： Emmanuel Garnier ,  Daniel Gourdain ,  Frederic Judas ,  Patrick Le Bot ,  Frederic Staine

IPC分类号： F25J3/00

CPC分类号： F25J3/04878 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04187 ,  F25J3/042 ,  F25J3/04303 ,  F25J3/04412 ,  F25J5/002 ,  F25J2200/20 ,  F25J2200/90 ,  F25J2290/10 ,  F25J2290/12 ,  Y10S62/903

摘要： A process and an apparatus for separating air by cryogenic distillation. The apparatus has a medium pressure column thermally coupled to a low pressure column. Compressed and purified air is cooled to cryogenic temperature in an exchanger, and sent at least partly to the medium pressure column. Streams enriched in oxygen and nitrogen are sent from the medium pressure column to the low pressure column and, streams enriched in nitrogen and oxygen are removed from the low pressure.

摘要翻译： 一种通过低温蒸馏分离空气的方法和装置。 该装置具有与低压塔热耦合的中压塔。 压缩和净化的空气在交换器中冷却至低温，并至少部分送至中压塔。 将富含氧气和氮气的气流从中压塔送到低压塔，并且从低压中除去富含氮和氧的物流。

公开(公告)号：US20010052244A1

公开(公告)日：2001-12-20

申请号：US09819951

申请日：2001-03-29

申请人： LINDE AKTIENGESELLSCHAFT

发明人： Dietrich Rottmann ,  Christian Kunz

IPC分类号： F25J003/00

CPC分类号： F25J3/0429 ,  F25J3/04018 ,  F25J3/04024 ,  F25J3/04145 ,  F25J3/04187 ,  F25J3/04193 ,  F25J3/04303 ,  F25J3/04466 ,  F25J2200/06 ,  F25J2235/50 ,  F25J2245/40

摘要： For producing a pressurized product by low-temperature producing a pressurized product by low-temperature fractionation of air in a rectification system which has a high-pressure column (13) and a low-pressure column (14), a first feed airstream (12) is introduced into the high-pressure column (13), and an oxygen-rich fraction (38) from the low-pressure column (14) is brought (39) to pressure in the liquid state and introduced (41) into a mixing column (16). A second feed airstream (6, 15) is introduced into the lower region of the mixing column (16) and brought into countercurrent contact with the oxygen-rich fraction (41). The mixing column (16) is operated at a pressure (PM1S) which is lower than the operating pressure (pHDS) of the high-pressure column (13). A total airstream (1) which comprises the first and second feed airstreams is compressed (2) to a first pressure (p1) which is lower than the operating pressure (pHDS) of the high-pressure column (13) and is purified (3) at about this first pressure (p2) . The purified total airstream (4) is divided into the first (5) and the second (6) feed airstream. The first feed airstream (5) is further compressed (8) separately from the second feed airstream to a second pressure (P2) which is at least equal to the operating pressure (PHDS) of the high-pressure column (13).

摘要翻译： 为了通过在具有高压塔（13）和低压塔（14）的精馏系统中低温分馏空气来低温生产加压产物来生产加压产品，第一进料气流（12 ）引入高压塔（13）中，将来自低压塔（14）的富氧馏分（38）带入（39）至液态压力，并将其引入（41） 列（16）。 将第二进料气流（6,15）引入混合塔（16）的下部区域并与富氧部分（41）逆流接触。 混合塔（16）在低于高压塔（13）的操作压力（pHDS）的压力（PM1S）下操作。 包括第一和第二进料气流的总气流（1）被压缩（2）到低于高压塔（13）的操作压力（pHDS）的第一压力（p1）并被纯化（3 ）在约第一压力（p2）下。 纯化的总气流（4）分为第一（5）和第二（6）进料气流。 第一进料气流（5）与第二进料气流分开进一步压缩（8）至至少等于高压塔（13）的操作压力（PHDS）的第二压力（P2）。

公开(公告)号：US06170291B2

公开(公告)日：2001-01-09

申请号：US09288099

申请日：1999-04-07

申请人： Christopher John Hine

发明人： Christopher John Hine

IPC分类号： F25J300

CPC分类号： F25J3/04381 ,  F25J3/04187 ,  F25J3/04206 ,  F25J3/04303 ,  F25J3/04412 ,  F25J2250/40 ,  F25J2250/50 ,  F25J2290/12 ,  Y10S62/939

摘要： Air is separated by rectification. The air is compressed in a main air compressor to a first pressure. Without further compression a first flow of the compressed air is cooled in a main heat exchanger to a temperature suitable for its separation by rectification. The first flow is introduced into the higher pressure column of a double rectification column comprising, in addition to the higher pressure column, a lower pressure column, in which a bottom oxygen fraction containing from about 50 to about 96 mole percent of oxygen is formed. A condenser-reboiler places the higher pressure column in heat exchange relationship with the lower pressure rectification column. A second flow of the compressed air is expanded with the performance of external work in an expansion turbine without further compression of the second flow upstream of the expansion. The expanded second flow is introduced into the lower pressure rectification column. An impure oxygen product is taken from the said bottom fraction. The external work is the generation of electrical power, and thus the turbine is coupled to an electrical generator.

摘要翻译： 空气通过整流分离。 空气在主空气压缩机中被压缩至第一压力。 在不进一步压缩的情况下，压缩空气的第一流量在主热交换器中被冷却到适于通过精馏分离的温度。 将第一流引入双精馏塔的高压塔中，除了高压塔之外，还包括低压塔，其中形成含有约50至约96摩尔％的氧的底部氧馏分。 冷凝器再沸器使较高压力塔与低压精馏塔处于热交换关系。 压缩空气的第二流动随着在膨胀涡轮机中的外部作业的性能而膨胀，而不会在膨胀的上游进一步压缩第二流。 将膨胀的第二流引入低压精馏塔。 从所述底部馏分取出不纯的氧产物。 外部工作是产生电力，因此涡轮机耦合到发电机。