公开(公告)号：US06499313B2

公开(公告)日：2002-12-31

申请号：US09950810

申请日：2001-09-13

申请人： Ralph Spoeri ,  Stefan Lochner

发明人： Ralph Spoeri ,  Stefan Lochner

IPC分类号： F25J300

CPC分类号： F25J3/04224 ,  F25J3/04357 ,  F25J3/04387 ,  F25J3/04393 ,  F25J3/04454 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2235/42 ,  F25J2240/12 ,  F25J2245/42 ,  F25J2250/04

摘要： High-purity nitrogen is generated by low-temperature fractionation of air in a rectification system for nitrogen/oxygen separation having at least a first rectifier column (4). Cycle nitrogen (24) in gas form is removed from the upper region of the first rectifier column (4) and is compressed in a cycle compressor (30). A first part (35) of the compressed cycle nitrogen is liquefied. A nitrogen fraction (52) from the rectification system for nitrogen/oxygen separation is introduced (52) into a high-purity nitrogen column (39) having a top condenser (54). High-purity nitrogen (56) is removed from the upper region of the high-purity nitrogen column (39). The refrigeration demand of the top condenser (54) is at least partially covered by liquefied cycle nitrogen (38).

摘要翻译： 通过在具有至少第一整流柱（4）的氮/氧分离的精馏系统中的空气的低温分馏产生高纯氮。 从第一整流柱（4）的上部区域除去以气体形式循环的氮气（24），并在循环压缩机（30）中被压缩。 压缩循环氮气的第一部分（35）被液化。 将来自用于氮气/氧气分离的精馏系统的氮气馏分（52）引入（52）到具有顶部冷凝器（54）的高纯度氮气塔（39）中。 从高纯氮塔（39）的上部区域除去高纯氮（56）。 顶部冷凝器（54）的制冷需求至少部分被液化循环氮覆盖（38）。

公开(公告)号：US06477860B2

公开(公告)日：2002-11-12

申请号：US09810340

申请日：2001-03-19

申请人： Dietrich Rottmann ,  Christian Kunz

发明人： Dietrich Rottmann ,  Christian Kunz

IPC分类号： F25J304

CPC分类号： F25J3/0486 ,  F25J3/04018 ,  F25J3/0403 ,  F25J3/0409 ,  F25J3/04145 ,  F25J3/04206 ,  F25J3/04212 ,  F25J3/04321 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/044 ,  F25J3/0443 ,  F25J3/04812 ,  F25J2200/32 ,  F25J2200/76 ,  F25J2215/44 ,  F25J2215/52 ,  F25J2215/56 ,  F25J2220/42 ,  F25J2220/50 ,  F25J2220/52 ,  F25J2230/42 ,  F25J2235/50 ,  F25J2240/46 ,  F25J2245/42 ,  F25J2250/42 ,  F25J2250/50

摘要： In a single column distillation system for obtaining gaseous and liquid nitrogen with a variable proportions of liquid product by low-temperature separation from air, a first portion (12, 13) of nitrogen-rich fraction (5, 7, 8) is fed downstream of circulation compressor (9) to the liquefaction chamber of a condenser-evaporator (14) associated with the single column and condensed under a pressure higher than the operating pressure of the single column (4). A liquid oxygen-enriched fraction (228, 231) from the distillation column system is at least partially evaporated in the evaporation chamber of condenser-evaporator (14). A portion (18) of nitrogen-rich liquid (15, 16) from condenser-evaporator (14) is drawn off at least at times as liquid product. A second oxygen-enriched gas (221, 521) is removed from one of columns (546) of the distillation system and/or from the evaporation chamber of condenser-evaporator (14), machine expanded(23), and heated in main heat exchanger (2).

摘要翻译： 在用于通过与空气进行低温分离从而获得具有不同比例的液体产物的气态和液氮的单塔蒸馏系统中，将富氮馏分（5,7,8）的第一部分（12,13）进料到下游 的循环压缩机（9）连接到与单塔相关联的冷凝器 - 蒸发器（14）的液化室，并在高于单塔（4）的操作压力的压力下冷凝。 来自蒸馏塔系统的液体富氧馏分（228,231）在冷凝器 - 蒸发器（14）的蒸发室中至少部分蒸发。 至少有时作为液体产物抽出来自冷凝器 - 蒸发器（14）的富氮液体（15,16）的一部分（18）。 第二个富氧气体（221,521）从蒸馏系统的一个塔（546）和/或从冷凝器 - 蒸发器（14）的蒸发室，机器膨胀（23）中的一个中除去，并在主热中加热 交换器（2）。

公开(公告)号：US5478547A

公开(公告)日：1995-12-26

申请号：US124072

申请日：1993-09-21

申请人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

发明人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

IPC分类号： C01B21/04 ,  F25J3/04 ,  F25J3/08 ,  C01B21/00

CPC分类号： F25J3/04642 ,  F25J3/04157 ,  F25J3/04254 ,  F25J3/04284 ,  F25J3/04357 ,  F25J3/04636 ,  F25J2200/04 ,  F25J2200/54 ,  F25J2205/02 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2205/84 ,  F25J2210/42 ,  F25J2215/30 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2250/02 ,  F25J2270/90

摘要： An ultra-high purity nitrogen generating method comprises: feeding feed air to a carbon dioxide eliminator-drier and a primary rectification column, thereby removing catalyst poisons for an oxidation catalyst used for oxidation of carbon monoxide and hydrogen in the feed air by means of the carbon dioxide eliminator-drier and the primary rectification column, condensing and liquefying a part of low purity nitrogen gas separated in the primary rectification column by means of a condenser, warming the raw nitrogen gas which has not been condensed and liquefied in the condenser to normal temperature by means of a heat exchanger and compressing it by a recyclic compressor so that the pressure thereof is increased and the temperature thereof is raised, oxidizing carbon monoxide and hydrogen in an oxidation column and removing the resulting carbon dioxide and water by an adsorption column.

摘要翻译： 超高纯度氮气生成方法包括：将进料空气送入二氧化碳除去器和一次精馏塔，从而除去用于氧化进料空气中的一氧化碳和氢气的氧化催化剂的催化剂毒物 二氧化碳除气器和一次精馏塔，通过冷凝器冷凝和液化在一次精馏塔中分离的一部分低纯度氮气，将冷凝器中未冷凝和液化的原始氮气加热至正常 温度，并通过循环压缩机进行压缩，使其压力升高，温度升高，氧化柱中氧化一氧化碳和氢气，并通过吸附塔除去生成的二氧化碳和水。

公开(公告)号：US5205127A

公开(公告)日：1993-04-27

申请号：US750332

申请日：1991-08-27

申请人： Rakesh Agrawal

发明人： Rakesh Agrawal

IPC分类号： C01B21/04 ,  F25J3/04

CPC分类号： F25J3/04284 ,  F25J3/044 ,  F25J2200/30 ,  F25J2200/74 ,  F25J2205/02 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2235/42 ,  F25J2245/42 ,  F25J2250/20 ,  F25J2250/42

摘要： This invention relates to a cryogenic process for the separation of air utilizing an integrated multi-column distillation system wherein an ultra high purity nitrogen product is generated. In the cryogenic distillation separation of air, air is initially compressed, pretreated and cooled for separation into its components. Ultra high purity, e.g., nitrogen having less than 0.1 ppm of light impurities is generated with enhanced nitrogen product recovery by withdrawing liquid nitrogen from a first column at an intermediate point and charging that fraction as feed to the second column, withdrawing a nitrogen stream which is rich in volatile contaminants from the top of the first column, partially condensing that nitrogen stream against crude liquid oxygen, and removing the uncondensed portion which has been concentrated in volatile contaminants as a purge stream. An ultra high purity nitrogen product is obtained from a second column.

摘要翻译： 本发明涉及一种使用集成的多塔蒸馏系统分离空气的低温方法，其中产生超高纯氮产物。 在空气的低温蒸馏分离中，空气最初被压缩，预处理并冷却以分离成其组分。 通过在中间点从第一塔排出液氮并将该馏分装入第二塔的进料，产生超高纯度，例如具有小于0.1ppm轻杂质的氮，提高氮产物回收率，抽出氮气流 从第一塔的顶部富含挥发性污染物，部分地冷凝该氮气流与粗液氧，并且将已经浓缩在挥发性污染物中的未冷凝部分作为吹扫流除去。 从第二列获得超高纯氮产品。

公开(公告)号：US5137559A

公开(公告)日：1992-08-11

申请号：US633826

申请日：1990-12-26

申请人： Rakesh Agrawal

发明人： Rakesh Agrawal

IPC分类号： F25J3/04

CPC分类号： F25J3/04351 ,  F25J3/04084 ,  F25J3/04157 ,  F25J3/04224 ,  F25J3/04284 ,  F25J3/0429 ,  F25J3/04321 ,  F25J3/04412 ,  F25J3/0443 ,  F25J3/04678 ,  F25J2200/54 ,  F25J2200/94 ,  F25J2205/02 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2245/40 ,  F25J2245/42 ,  F25J2250/20 ,  F25J2250/42 ,  F25J2270/90

摘要： This invention relates to a cryogenic process for the separation of air utilizing an integrated multi-column distillation system wherein an ultra high purity nitrogen rich, oxygen rich and optionally an argon rich product are generated. In the cryogenic distillation separation of air, air is initially compressed, pretreated and cooled for separation into its components. Ultra high purity, e.g., nitrogen having less than 0.1 ppm of volatile impurities is generated with enhanced nitrogen product recovery by withdrawing liquid nitrogen from the higher pressure column at an intermediate point and charging that fraction as reflux to the lower pressure column, withdrawing a nitrogen stream which is rich in volatile contaminants from the top of the high pressure column, partially condensing the nitrogen stream and removing the uncondensed portion as a purge stream, and, withdrawing an ultra high purity nitrogen product at a point below a nitrogen vapor withdrawal point at the top of the lower pressure column. Alternatively, no purge need be taken and the volatile impurities allowed to pass to the low pressure column. In that case, a nitrogen fraction rich in volatile impurities is removed from an upper portion of the low pressure column, condensed and at least a portion of the uncondensed fraction removed as a purge and the condensed portion returned to the low pressure column.

摘要翻译： 本发明涉及一种利用集成多塔蒸馏系统分离空气的低温方法，其中产生了超高纯度富氮富氧和任选的富氩产物。 在空气的低温蒸馏分离中，空气最初被压缩，预处理并冷却以分离成其组分。 通过在中间点从较高压力塔中取出液氮并将该馏分作为回流装入低压塔，产生具有小于0.1ppm挥发性杂质的氮，具有增强的氮产物回收率，氮气回收氮 从高压塔的顶部富含挥发性污染物的流，部分地冷凝氮气流并除去未冷凝的部分作为清除流，并且在低于氮蒸气取出点的点处抽出超高纯氮产物 低压塔的顶部。 或者，不需要吹扫，允许挥发性杂质通过低压塔。 在这种情况下，从低压塔的上部除去富含挥发性杂质的氮气馏分，冷凝，至少部分未冷凝馏分作为吹扫除去，冷凝部分返回到低压塔。

公开(公告)号：US06276172B1

公开(公告)日：2001-08-21

申请号：US09437263

申请日：1999-11-10

申请人： Dietrich Rottman ,  Christian Kunz

发明人： Dietrich Rottman ,  Christian Kunz

IPC分类号： F25J300

CPC分类号： F25J3/04218 ,  F25J3/04084 ,  F25J3/04212 ,  F25J3/04284 ,  F25J3/04351 ,  F25J3/04454 ,  F25J3/04963 ,  F25J3/08 ,  F25J2200/04 ,  F25J2200/10 ,  F25J2200/50 ,  F25J2200/72 ,  F25J2210/42 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2235/42 ,  F25J2245/42 ,  F25J2250/20 ,  F25J2250/42 ,  F25J2270/42 ,  F25J2290/62 ,  Y10S62/92

摘要： For producing ultrapure nitrogen by low-temperature fractionation of air in a rectification system having at least one rectification column, compressed and purified feed air is conducted into a high pressure column, an oxygen-free pressurized nitrogen fraction is produced from the high pressure column, conducted into a low-pressure column and in the low-pressure column carbon-monoxide-free low-pressure nitrogen is produced as overhead gas. The oxygen-free pressurized nitrogen fraction (1) is either taken off in the liquid state from an upper region of the high pressure column or is provided from a liquid tank (22) containing stored oxygen-free nitrogen and the oxygen-free pressurized nitrogen fraction (1) is expanded into the bottom-heated low-pressure column (2). Ascending vapour in the lowpressure column (2) by mass transfer with and an ultrapure nitrogen reflux applied at the top of the low-pressure column (2) and is freed from carbon monoxide using ultrapure nitrogen, withdrawn as carbon-monoxide-free overhead gas (5) at the top of the low-pressure column (2). After a pressure increase the overhead (5), is partially liquefied, and the liquefied part (17, 18) is expanded into a bottom-heated He—Ne—H2 column (4) from which the ultrapure nitrogen (19) is withdrawn in the liquid state.

摘要翻译： 为了在具有至少一个精馏塔的精馏系统中通过空气的低温分馏制备超纯氮，将压缩和纯化的进料空气进入高压塔，由高压塔产生无氧加压氮馏分， 进入低压塔，在低压塔中产生一氧化碳的低压氮作为塔顶气体。 无氧加压氮馏分（1）从高压塔的上部区域以液态取出，或者由含有储存无氧氮的液体罐（22）和无氧加压氮 馏分（1）膨胀到底部加热的低压塔（2）中。 在低压塔（2）的顶部通过传质和超纯氮回流在低压塔（2）中升高蒸气，并使用超纯氮从一氧化碳中除去一氧化碳，作为一氧化碳的塔顶气体 （5）在低压塔（2）的顶部。 在压力增加之后，顶部（5）部分液化，液化部分（17,18）膨胀成底部加热的He-Ne-H2柱（4），超纯氮（19）从该塔中取出 液态。

公开(公告)号：US5778698A

公开(公告)日：1998-07-14

申请号：US755006

申请日：1996-11-22

申请人： Takao Yamamoto

发明人： Takao Yamamoto

IPC分类号： F25J3/04 ,  F25J3/00

CPC分类号： F25J3/04854 ,  F25J3/04157 ,  F25J3/04163 ,  F25J3/04169 ,  F25J3/04254 ,  F25J3/04284 ,  F25J3/0443 ,  F25J2200/34 ,  F25J2200/50 ,  F25J2200/90 ,  F25J2205/82 ,  F25J2210/42 ,  F25J2215/44 ,  F25J2215/56 ,  F25J2220/42 ,  F25J2220/50 ,  F25J2220/52 ,  F25J2245/02 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/42 ,  F25J2250/50 ,  F25J2250/52 ,  F25J2270/90

摘要： A unit capable of simultaneously producing nitrogen of ultra high purity and liquid oxygen of ultra high purity, is provided. The inside of the first rectification column 6 is demarcated to an upper rectifying part 12, and upper-stage middle rectifying part 13, a lower-stage middle rectifying part 14 and a lower rectifying part 15. To the upper part 11 above the upper rectifying part 12 is connected a nitrogen condenser 8. A second rectification column 7 is demarcated to an upper rectifying part 22 and a lower rectifying part 23, and has a reboiler 25 provided under its lower rectifying part 22. Ultra high purity liquid nitrogen is recovered from between the upper rectifying part 12 and upper-stage middle rectifying part 13 of the first rectification column 6, and ultra high purity liquid oxygen is recovered from below the lower rectifying part 23 of the second rectification column 7.

摘要翻译： 提供能够同时生产超高纯度氮和超高纯度氮气的单元。 第一整流柱6的内部被划分为上部整流部12和上部中间整流部13，下部中间整流部14以及下部整流部15。 部分12连接有氮冷凝器8.第二精馏塔7被划分为上部精馏部分22和下部精馏部分23，并且在其下部精馏部分22下方设置有再沸器25.超高纯度液氮从 在第一精馏塔6的上部精馏部12和上段中间精馏部13之间，从第二精馏塔7的下部整流部23的下方回收超高纯度的液氧。

公开(公告)号：US5470543A

公开(公告)日：1995-11-28

申请号：US325503

申请日：1994-10-19

申请人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

发明人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

IPC分类号： C01B21/04 ,  F25J3/04 ,  F25J3/08 ,  B01J8/02 ,  F25J3/02

CPC分类号： F25J3/04642 ,  F25J3/04157 ,  F25J3/04254 ,  F25J3/04284 ,  F25J3/04357 ,  F25J3/04636 ,  F25J2200/04 ,  F25J2200/54 ,  F25J2205/02 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2205/84 ,  F25J2210/42 ,  F25J2215/30 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2250/02 ,  F25J2270/90

摘要： Ultra-high purity nitrogen is generated by feeding feed air to a carbon dioxide eliminator-drier and a primary rectification column, thereby removing catalyst poisons for an oxidation catalyst used for oxidation of carbon monoxide and hydrogen in the feed air by the carbon dioxide eliminator-drier and the primary rectification column. A part of low purity nitrogen gas separated in the primary rectification column is condensed and liquefied by a condenser. The raw nitrogen gas which has not been condensed and liquefied in the condenser is warmed to normal temperature by a heat exchanger and compressed by a recyclic compressor so that the pressure thereof is increased and the temperature thereof is raised. Carbon monoxide and hydrogen are oxidized in an oxidation column and the resulting carbon dioxide and water are removed by an adsorption column.

摘要翻译： 通过将进料空气送入二氧化碳消除器干燥器和一次精馏塔而产生超高纯度氮气，从而除去用于通过二氧化碳消除器在进料空气中氧化一氧化碳和氢气的氧化催化剂的催化剂毒物， 干燥器和一次整流柱。 在一次精馏塔中分离的一部分低纯度氮气通过冷凝器冷凝和液化。 在冷凝器中未冷凝和液化的原料氮气通过热交换器升温至常温，并通过循环压缩机压缩，使得其压力增加并且其温度升高。 一氧化碳和氢气在氧化塔中氧化，所得的二氧化碳和水通过吸附塔除去。

公开(公告)号：US5359857A

公开(公告)日：1994-11-01

申请号：US60017

申请日：1993-05-10

申请人： Hideyuki Honda

发明人： Hideyuki Honda

IPC分类号： C01B21/04 ,  C01B23/00 ,  F25J3/02 ,  F25J3/04 ,  F25J3/08

CPC分类号： F25J3/04412 ,  F25J3/04309 ,  F25J3/044 ,  F25J3/04678 ,  F25J3/04739 ,  F25J2200/32 ,  F25J2200/72 ,  F25J2200/94 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  Y10S62/92

摘要： An air liquefaction separation installation is provided with a rectification column which have a carbon monoxide rectification part connected to the upper part of the rectification column and at upper part of its rectification parts or a main condensation evaporator, a collecting part is provided for withdrawing a part of nitrogen gas having reduced amount of carbon monoxide and/or liquified nitrogen; and a carbon monoxide-containing nitrogen gas withdrawal part and/or liquefied nitrogen gas withdrawal part, connected to the lower part of the carbon monoxide rectification part. According to the present invention, carbon monoxide is removed from nitrogen by a rectification process. Accordingly, cost for installation and operation can be reduced.

摘要翻译： 空气液化分离装置设置有精馏塔，其具有连接到精馏塔的上部和精馏部的上部的一氧化碳精馏部或主缩合蒸发器，提供收集部，用于取出部分 的氮气减少一氧化碳和/或液化氮的量; 和一氧化碳的氮气取出部和/或液化氮气取出部，与一氧化碳整流部的下部连接。 根据本发明，通过精馏处理从氮气中除去一氧化碳。 因此，可以降低安装和操作的成本。

公开(公告)号：US5349822A

公开(公告)日：1994-09-27

申请号：US26481

申请日：1993-03-04

申请人： Takashi Nagamura ,  Takao Yamamoto

发明人： Takashi Nagamura ,  Takao Yamamoto

IPC分类号： C01B21/04 ,  F25J3/04 ,  F25J3/08 ,  F25J3/00

CPC分类号： F25J3/04084 ,  C01B21/04 ,  F25J3/04163 ,  F25J3/04169 ,  F25J3/04193 ,  F25J3/04224 ,  F25J3/0423 ,  F25J3/04284 ,  F25J3/04309 ,  F25J3/04357 ,  F25J3/044 ,  F25J3/04412 ,  F25J3/04854 ,  F25J2200/74 ,  F25J2200/94 ,  F25J2205/02 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2215/42 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2250/20 ,  F25J2250/42 ,  F25J2270/02 ,  F25J2280/02 ,  Y02P20/152 ,  Y10S62/939

摘要： Air separation by low temperature liquefaction and fractionation wherein feed air is compressed and cooled and supplied to a single stage air separation column from which gaseous nitrogen is removed frown the top and wherein an oxygen-rich liquid is removed from the bottom. The column contains solid material providing solid surfaces on which mass and energy transfer takes place to effect fractionation over a substantial vertical height in the single stage of the column. Liquid is removed from the column intermediate that height, and the removed liquid is subcooled and expanded to produce a gas and a liquid. The liquid is an ultra-high purity nitrogen product, and can be withdrawn from the cycle in liquid or vapor phase. Vapor is removed from the top of the column, cooled and partially condensed and phase separated. Vapor from the last-mentioned phase separation is discharged, thereby to eliminate from the cycle most of the impurities boiling lower than nitrogen. Liquid from the last-mentioned phase separation is returned to the top of the column as reflux.

摘要翻译： 通过低温液化和分馏进行空气分离，其中进料空气被压缩和冷却并供应到单级空气分离塔，从其中除去气态氮皱起顶部，并且其中从底部除去富氧液体。 该柱包含提供固体表面的固体材料，在该表面上进行质量和能量转移，以在柱的单个阶段中在基本垂直的高度上进行分馏。 将液体从该高度的中间塔中除去，并将被除去的液体过冷和膨胀以产生气体和液体。 液体是超高纯氮产品，可以在液相或气相中从循环中取出。 将蒸气从塔顶除去，冷却并部分冷凝并相分离。 排出最后提到的相分离的蒸汽，从而从循环中消除大部分沸点低于氮的杂质。 来自最后提到的相分离的液体作为回流返回塔的顶部。