公开(公告)号：US20130042647A1

公开(公告)日：2013-02-21

申请号：US13212461

申请日：2011-08-18

申请人： Paul Musicus

发明人： Paul Musicus

IPC分类号： F25J3/08

CPC分类号： F25J3/04212 ,  F25J3/0406 ,  F25J3/04218 ,  F25J3/04303 ,  F25J3/04351 ,  F25J3/04424 ,  F25J3/0486 ,  F25J2200/20 ,  F25J2200/54 ,  F25J2235/42 ,  F25J2245/42

摘要： The present invention is an improved process for producing elevated pressure nitrogen. This method includes providing an air separation unit with at least two columns, an LP column and an MP column, and cooling a compressed feed air stream in a heat exchanger, then expanding the resulting cooled feed air stream in an expander, thereby producing a quantity of work and a cooled inlet air stream, feeding the cooled inlet air stream into the LP column. Then extracting a nitrogen stream from the MP column, and warming a first portion of the nitrogen stream in the heat exchanger, thereby producing a product nitrogen stream. Then compressing a second portion of the nitrogen stream in a compressor, thereby producing medium pressure nitrogen stream, and introducing the medium pressure nitrogen stream into an LP column vaporizer. Then extracting a second nitrogen stream from the LP column, and cooling the second nitrogen stream in a condenser thereby producing a liquid nitrogen stream. Then introducing a first portion of the liquid nitrogen stream into the LP column, increasing the pressure of a second portion of the liquid nitrogen stream, thereby producing a pressurized liquid nitrogen stream, and introducing a first portion of the pressurized liquid nitrogen stream into the MP column, and export a second portion of the pressurized liquid nitrogen stream as product.

摘要翻译： 本发明是用于生产高压氮的改进方法。 该方法包括提供具有至少两个柱的空气分离单元，LP塔和MP塔，并且在热交换器中冷却压缩的进料空气流，然后将所得到的冷却的进料空气流膨胀在膨胀机中，从而产生一定量 的工作和冷却的入口空气流，将冷却的入口空气流供给到LP塔中。 然后从MP柱中提取氮气流，并且在热交换器中加热氮气流的第一部分，从而产生产物氮气流。 然后压缩压缩机中氮气流的第二部分，从而产生中压氮气流，并将中压氮气流引入LP塔蒸发器。 然后从LP塔提取第二氮气流，并在冷凝器中冷却第二氮气流，从而产生液氮流。 然后将液氮流的第一部分引入LP塔中，增加液氮流的第二部分的压力，从而产生加压液氮流，并将第一部分加压液氮流引入MP 柱，并将加压液氮流的第二部分作为产物输出。

公开(公告)号：US20110226015A1

公开(公告)日：2011-09-22

申请号：US12727442

申请日：2010-03-19

申请人： Henry Edward Howard

发明人： Henry Edward Howard

IPC分类号： F25J3/02

CPC分类号： F25J3/04012 ,  F25J3/04018 ,  F25J3/0409 ,  F25J3/04163 ,  F25J3/0423 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04424 ,  F25J3/04654 ,  F25J3/04666 ,  F25J3/04672 ,  F25J3/04678 ,  F25J3/04709 ,  F25J3/04715 ,  F25J3/04721 ,  F25J2200/54 ,  F25J2210/58 ,  F25J2215/40 ,  F25J2220/40 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/52 ,  F25J2270/02 ,  F25J2290/34

摘要： A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead.

摘要翻译： 一种生产第一和第二液体流的低温空气分离方法和装置。 第一液体流具有比空气更高的氧含量，并且可以由较高压力的蒸馏塔底部和第二液体流（例如空气）组成，具有比第一液体流更低的氧含量，并且氩含量不低于 空气。 通过与第一液体流的间接热交换将第二液体流过冷，并且将这两个流引入低压塔。 将第二液体物流引入低于该粗液柱氧塔底部或其任何部分被引入低压塔的点以将液体与蒸汽的比例增加到低于引入第二液流的点 ，减少塔顶内存在的氧气。

公开(公告)号：US06546748B1

公开(公告)日：2003-04-15

申请号：US10166361

申请日：2002-06-11

申请人： Richard Martin Kelly ,  Thomas John Bergman, Jr.

发明人： Richard Martin Kelly ,  Thomas John Bergman, Jr.

IPC分类号： F25J300

CPC分类号： F25J3/04078 ,  F25J3/04206 ,  F25J3/0429 ,  F25J3/04424 ,  F25J2215/02 ,  F25J2215/40 ,  F25J2215/44 ,  F25J2215/52 ,  F25J2220/40 ,  F25J2235/02 ,  F25J2235/42 ,  F25J2235/52 ,  F25J2245/42 ,  F25J2250/40

摘要： A cryogenic rectification system wherein feed air is provided into the lower portion of a cryogenic rectification column, and liquid having a defined oxygen concentration is withdrawn from a defined intermediate level of the column above the feed air introduction level, vaporized and optionally diluted with nitrogen for recovery as ultra high purity clean dry air.

摘要翻译： 一种低温精馏系统，其中进料空气被提供到低温精馏塔的下部，并且具有确定的氧浓度的液体从进料空气引入水平的规定的中间水平中排出，蒸发并任选用氮气稀释， 恢复为超高纯洁净干燥空气。

公开(公告)号：US5682762A

公开(公告)日：1997-11-04

申请号：US724332

申请日：1996-10-01

申请人： Rakesh Agrawal ,  Zbigniew Tadeusz Fidkowski

发明人： Rakesh Agrawal ,  Zbigniew Tadeusz Fidkowski

IPC分类号： F25J3/04

CPC分类号： F25J3/04321 ,  F25J3/04351 ,  F25J3/04412 ,  F25J3/04424 ,  F25J3/04454 ,  F25J3/04872 ,  F25J2200/20 ,  F25J2200/32 ,  F25J2215/44 ,  F25J2245/42

摘要： A process is set forth for the cryogenic distillation of an air feed to produce high pressure nitrogen of various purity, varying from moderately high purity (99.9% nitrogen) to ultra-high purity (less than 1 part per billion of oxygen). The process is particularly suited for cases where the high pressure nitrogen is needed directly from the distillation column system to avoid contamination concerns associated with compressing nitrogen that is produced at lower pressures. The process uses a high pressure column, which operates at a pressure to directly produce the nitrogen at the desired high pressure, and one or more lower pressure columns which produces a portion of the nitrogen product at a lower pressure. At least a portion of the lower pressure nitrogen is compressed and fed to the high pressure column at a location which is below the removal location of the high pressure nitrogen.

摘要翻译： 阐述了一种用于空气进料的低温蒸馏以产生各种纯度的高压氮（从中等纯度（99.9％氮）到超高纯度（小于十亿分之一氧））的方法。 该方法特别适合于从蒸馏塔系统直接需要高压氮以避免与压缩在较低压力下产生的氮有关的污染问题的情况。 该方法使用高压塔，其在压力下直接产生所需高压下的氮气，以及一个或多个低压塔，其产生较低压力下的氮产物的一部分。 低压氮的至少一部分被压缩并且在低于高压氮的去除位置的位置处被供给到高压塔。

公开(公告)号：US4962646A

公开(公告)日：1990-10-16

申请号：US400319

申请日：1989-08-30

申请人： Thomas Rathbone

发明人： Thomas Rathbone

IPC分类号： F25J3/04

CPC分类号： F25J3/04206 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04424 ,  F25J3/04545 ,  F25J3/04575 ,  F25J3/04581 ,  F25J3/046 ,  F25J3/04618 ,  F25J2200/20 ,  F25J2215/50 ,  F25J2230/06 ,  F25J2235/42 ,  F25J2245/42 ,  F25J2250/40 ,  F25J2250/42 ,  F25J2250/50 ,  F25J2250/52 ,  Y10S62/915

摘要： A method and apparatus for cryogenic air separation wherein both fuel gas and electrical power are produced. Respective operating pressures of the lower and higher pressure rectification columns can be set independently of one another, allowing flexibility in selecting the purity of the oxygen product.

公开(公告)号：US4769055A

公开(公告)日：1988-09-06

申请号：US10332

申请日：1987-02-03

申请人： Donald C. Erickson

发明人： Donald C. Erickson

IPC分类号： F25J3/04

CPC分类号： F25J3/04103 ,  F25J3/0409 ,  F25J3/04206 ,  F25J3/04284 ,  F25J3/04296 ,  F25J3/04309 ,  F25J3/04418 ,  F25J3/04424 ,  F25J3/04715 ,  F25J2200/08 ,  F25J2200/32 ,  F25J2200/50 ,  F25J2200/54 ,  F25J2200/90 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2235/50 ,  F25J2250/40 ,  F25J2250/42 ,  F25J2250/50 ,  F25J2250/52 ,  Y10S62/924

摘要： In a cryogenic air distillation process for producing medium-to-high purity oxygen plus optional coproduct argon, a new process sequence results in more efficient distillations at reduced supply pressure and full O.sub.2 recovery. Reforming to FIG. 2, a minor stream of supply air is additionally compressed by compander 204, cooled, and then reboils column 201 by total condensation in reboiler 205. The liquid air is split into two intermediate reflux streams, one for each column 201 and 202, valves 206 and 207, thereby improving the efficiency of both columns. The air condensing in 205 is somewhat hotter than that supplied to 202, due to its higher pressure, which permits a reduction in the main supply pressure.

摘要翻译： 在用于生产中至高纯度氧气和可选的副产物氩气的低温空气蒸馏方法中，新的方法顺序导致在降低的供应压力和全部氧气回收下更有效的蒸馏。 重塑图 如图2所示，小量的供应空气被压缩机204另外压缩，冷却，然后通过再沸器205中的总冷凝重新沸腾塔201.液体空气被分成两个中间回流流，每个列201和202分别为一个，第206和第202列为阀206 和207，从而提高了两列的效率。 由于其较高的压力，205中的空气冷凝比供应给202的空气稍高，这允许降低主供应压力。

公开(公告)号：US3754406A

公开(公告)日：1973-08-28

申请号：US3754406D

申请日：1971-03-15

申请人： AIR PROD & CHEM

发明人： ALLAM R

IPC分类号： F25J3/04 ,  F25J3/02

CPC分类号： F25J3/0486 ,  F25J3/0409 ,  F25J3/04206 ,  F25J3/04218 ,  F25J3/04303 ,  F25J3/04424 ,  F25J3/04884 ,  F25J2205/02 ,  F25J2205/24 ,  F25J2205/60 ,  F25J2235/02 ,  F25J2235/50 ,  F25J2245/40 ,  F25J2245/50 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/50

摘要： A plant for the production of low purity oxygen, in which a low pressure stream of incoming air is cooled against outgoing gas streams and fed into a high pressure fractionating column, and a high pressure stream of incoming air is cooled against outgoing gas streams, partially condensed against boiling liquid oxygen product in a product vaporizer, and separated into gas and liquid streams, the liquid stream being sub-cooled and expanded into a low pressure fractionating column while a major part of the gas stream is re-heated and expanded to provide plant refrigeration. Crude liquid oxygen from the bottom of the high pressure column is cooled against waste outgoing nitrogen from the low pressure column and then admitted to the low pressure column after first being used to liquefy some of the nitrogen from the high pressure column in an external reboiler/condenser. Liquid oxygen product from the low pressure column is pumped to a higher pressure before being passed through the sub-cooler and the product vaporizer. The remainder of the high pressure column nitrogen is liquefied in a second external reboiler/condenser by the separated high pressure liquid feed on its way to the low pressure column. The liquefied high pressure column nitrogen is used as reflux for the two columns, that for the low pressure column being cooled against outgoing waste nitrogen. The expander exhaust is likewise cooled against outgoing waste nitrogen before admission to the low pressure column.

摘要翻译： 用于生产低纯度氧气的设备，其中进入空气的低压流被冷却以抵抗输出的气流并进料到高压分馏塔中，并且高压的进入空气流被冷却以抵抗输出的气流，部分 在产品蒸发器中与沸腾的液氧产物冷凝并分离成气体和液体流，将液体流冷却并膨胀成低压分馏塔，同时将大部分气流重新加热和膨胀以提供 植物制冷。 来自高压塔底部的粗液态氧气从低压塔中排出的氮气被冷却，然后在首先用于液化来自外部再沸器/高压塔中的高压塔中的一些氮气之后进入低压塔， 冷凝器 来自低压塔的液氧产物在通过副冷却器和产品蒸发器之前被泵送到更高的压力。 剩余的高压塔氮通过分离的高压液体进料在通向低压塔的途中在第二外部再沸器/冷凝器中液化。 液化高压塔氮用作两塔的回流，低压塔被冷却出来的废氮。 在进入低压塔之前，膨胀器排气同样被排出废氮排出。

公开(公告)号：US3237418A

公开(公告)日：1966-03-01

申请号：US6502360

申请日：1960-10-26

申请人： PHILIPS CORP

发明人： JOSEPH MEISLER

IPC分类号： F25J3/04

CPC分类号： F25J3/04424 ,  F25J3/04278 ,  F25J2250/42 ,  F25J2250/50 ,  F25J2270/90 ,  F25J2280/02 ,  F25J2290/62 ,  Y10S62/913

公开(公告)号：US09441878B2

公开(公告)日：2016-09-13

申请号：US14994637

申请日：2016-01-13

申请人： Henry Edward Howard

发明人： Henry Edward Howard

IPC分类号： F25J3/04

CPC分类号： F25J3/04012 ,  F25J3/04018 ,  F25J3/0409 ,  F25J3/04163 ,  F25J3/0423 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04424 ,  F25J3/04654 ,  F25J3/04666 ,  F25J3/04672 ,  F25J3/04678 ,  F25J3/04709 ,  F25J3/04715 ,  F25J3/04721 ,  F25J2200/54 ,  F25J2210/58 ,  F25J2215/40 ,  F25J2220/40 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/52 ,  F25J2270/02 ,  F25J2290/34

摘要： A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead.

摘要翻译： 一种生产第一和第二液体流的低温空气分离方法和装置。 第一液体流具有比空气更高的氧含量，并且可以由较高压力的蒸馏塔底部和第二液体流（例如空气）组成，具有比第一液体流更低的氧含量，并且氩含量不低于 空气。 通过与第一液体流的间接热交换将第二液体流过冷，并且将这两个流引入低压塔。 将第二液体物流引入低于该粗液柱氧塔底部或其任何部分被引入低压塔的点以将液体与蒸汽的比例增加到低于第二液流的引入的点处，因此 ，减少塔顶内存在的氧气。

公开(公告)号：US09279613B2

公开(公告)日：2016-03-08

申请号：US12727442

申请日：2010-03-19

申请人： Henry Edward Howard

发明人： Henry Edward Howard

IPC分类号： F25J3/04

CPC分类号： F25J3/04012 ,  F25J3/04018 ,  F25J3/0409 ,  F25J3/04163 ,  F25J3/0423 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04424 ,  F25J3/04654 ,  F25J3/04666 ,  F25J3/04672 ,  F25J3/04678 ,  F25J3/04709 ,  F25J3/04715 ,  F25J3/04721 ,  F25J2200/54 ,  F25J2210/58 ,  F25J2215/40 ,  F25J2220/40 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/52 ,  F25J2270/02 ,  F25J2290/34

摘要： A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead.

摘要翻译： 一种生产第一和第二液体流的低温空气分离方法和设备。 第一液体流具有比空气更高的氧含量，并且可以由较高压力的蒸馏塔底部和第二液体流（例如空气）组成，具有比第一液体流更低的氧含量，并且氩含量不低于 空气。 通过与第一液体流的间接热交换将第二液体流过冷，并且将这两个流引入低压塔。 将第二液体物流引入低于该粗液柱氧塔底部或其任何部分被引入低压塔的点以将液体与蒸汽的比例增加到低于引入第二液流的点 ，减少塔顶内存在的氧气。