公开(公告)号：US4091633A

公开(公告)日：1978-05-30

申请号：US712264

申请日：1976-08-06

申请人： Gerhard Linde

发明人： Gerhard Linde

IPC分类号： F25J3/04

CPC分类号： F25J3/04933 ,  F25J3/04454 ,  F25J3/04624 ,  F25J2200/08 ,  F25J2200/32 ,  F25J2240/60 ,  F25J2250/20 ,  Y10S62/91

摘要： A process for the separation of a low-boiling gaseous mixture by low-temperature rectification, comprising the steps of:(a) subjecting said gaseous mixture to rectification in a high pressure zone to obtain a crude light fraction and a crude heavy fraction;(b) passing said crude light fraction and said crude heavy fraction to an intermediate pressure rectification zone to obtain an enriched gaseous overhead and an enriched liquid bottoms;(c) passing said liquid bottoms into a low-pressure rectification zone; and(d) withdrawing vapor from said low pressure rectification zone by suction, increasing the pressure of said vapor and passing said vapor into the intermediate pressure rectification zone;Whereby the pressure in the high pressure stage is lower than the pressure in a high pressure stage of a double column employing two pressure stages.

摘要翻译： 一种通过低温精馏分离低沸点气体混合物的方法，包括以下步骤：

公开(公告)号：US5765397A

公开(公告)日：1998-06-16

申请号：US763301

申请日：1996-12-10

申请人： Hideyuki Honda ,  Yasuharu Kishida

发明人： Hideyuki Honda ,  Yasuharu Kishida

IPC分类号： F25J3/04 ,  F25J1/00

CPC分类号： F25J3/04212 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04854 ,  F25J3/0486 ,  F25J3/04884 ,  F25J3/04933 ,  F25J2200/54 ,  F25J2200/94 ,  F25J2245/50 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2250/50

摘要： The present invention relates to an air liquefaction separation apparatus whose power cost is reduced. A low-pressure column of a double rectification column has a cleaning section at a lower position, and a liquid oxygen is partly withdrawn from the space above the cleaning section so as to supply it to a main condenser-evaporator. The liquid oxygen supplied to the main condenser-evaporator is subjected to heat exchange with a nitrogen gas separated at the head of a high-pressure column to be gasified into an oxygen gas. This oxygen gas is introduced to the space under the cleaning section. Hydrocarbons contained in the oxygen gas ascending through the cleaning section are removed by the rest of the liquid oxygen descending through the cleaning section to provide a clean oxygen gas. The liquid oxygen passed through the cleaning section is withdrawn from the low-pressure column. Thus, since the hydrocarbons are prevented from being concentrated highly to or over critical levels in the liquid oxygen in the main condenser-evaporator, submergence in the main condenser-evaporator can be reduced to minimize the influence of the depth of the liquid, thus improving heat exchange efficiency to lower the pressure of the nitrogen gas, as well as, to reduce operating cost by reducing power of the compressor for compressing the feed air.

摘要翻译： 本发明涉及电力成本降低的空气液化分离装置。 双精馏塔的低压塔在下部具有清洗部，从清洗部上方的空间部分取出液氧，供给主冷凝器 - 蒸发器。 供给到主冷凝器 - 蒸发器的液氧气与在高压塔头部分离的氮气进行热交换，使其气化成氧气。 该氧气被引入清洁部分下面的空间。 包含在通过清洁部分上升的氧气中的烃被剩下的通过清洁部分下降的液氧除去，以提供清洁的氧气。 通过清洗部分的液态氧从低压塔中取出。 因此，由于防止在主冷凝器 - 蒸发器中的液氧中高浓度或高于临界水平的烃被浓缩，所以可以减少主冷凝器 - 蒸发器中的淹没以最小化液体深度的影响，从而改善 热交换效率以降低氮气的压力，以及通过降低用于压缩进料空气的压缩机的功率来降低运行成本。

公开(公告)号：US20130205831A1

公开(公告)日：2013-08-15

申请号：US13816809

申请日：2011-08-09

申请人： Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

发明人： Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

IPC分类号： F25J3/04

CPC分类号： F25J3/04018 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/0423 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04387 ,  F25J3/04406 ,  F25J3/04412 ,  F25J3/04448 ,  F25J3/04812 ,  F25J3/04884 ,  F25J3/04933 ,  F25J2200/52 ,  F25J2240/10 ,  F25J2240/12 ,  F25J2240/44

摘要： The invention relates to a method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air in a distillation column system for nitrogen-oxygen separation, said distillation column system having at least one high-pressure column (8) and one low-pressure column (460), wherein the low-pressure column (460) is in a heat-exchanging connection with the high-pressure column (8) by means of a main condenser (461) designed as a condenser-evaporator. Feed air is compressed in an air compressor (2). The compressed feed air (6, 734, 802, 840) is cooled down in a main heat exchanger (20) and at least partially introduced into the high-pressure column (8). An oxygen-enriched liquid (462, 465) is removed from the high-pressure column (8) and fed to the low-pressure column (460) at a first intermediate position (464, 467, 906). A nitrogen-enriched liquid (468, 470) is removed from the high-pressure column (8) and/or the main condenser (461) and fed to the head of the low-pressure column (460). A liquid oxygen flow (11, 12) is removed from the distillation column system for nitrogen-oxygen separation, brought to an elevated pressure in the liquid state (13), introduced into the main heat exchanger (20) at said elevated pressure, evaporated or pseudo-evaporated and heated to approximately ambient temperature in the main heat exchanger (20), and finally obtained as a gaseous compressed oxygen product (14). A high-pressure process flow (34, 734) is brought into indirect heat exchange with the oxygen flow in the main heat exchanger (20) and then depressurized (36, 38; 736, 738), wherein the depressurized high-pressure flow (37, 737) is introduced at least partially in the liquid state into the distillation column system for nitrogen-oxygen separation. A gaseous circuit nitrogen flow (18, 19) is drawn from the high-pressure column and at least partially (21) compressed in a circuit compressor (22). A first sub-flow (45, 46; 244, 242, 230; 845, 846) of the circuit nitrogen flow is removed from the circuit compressor (22, 322), cooled down in the main heat exchanger (20), at least partially condensed in the bottom evaporator (9, 209) of the high-pressure column (8) in indirect heat exchange with the bottom liquid of the high-pressure column (8), and conducted back into the distillation column system for nitrogen-oxygen separation. A second sub-flow of the circuit nitrogen flow is branched off upstream and/or downstream of the circuit compressor and/or from an intermediate stage of the circuit compressor at a product pressure (P, P1, P2, P3, P4) and obtained as a compressed nitrogen product (27, 29, 53, 564, 565). The circuit compressor (22, 322) is designed as a hot compressor and is driven by means of external energy.

公开(公告)号：US1967717A

公开(公告)日：1934-07-24

申请号：US60703232

申请日：1932-04-23

申请人： LINDE AIR PROD CO

发明人： MOELLER WALTER F

IPC分类号： F25J3/04

CPC分类号： F25J3/0443 ,  F25J3/04933 ,  F25J2200/52 ,  F25J2200/54

公开(公告)号：US09733014B2

公开(公告)日：2017-08-15

申请号：US13816809

申请日：2011-08-09

申请人： Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

发明人： Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

IPC分类号： F25J3/06 ,  F25J3/04

CPC分类号： F25J3/04018 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/0423 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04387 ,  F25J3/04406 ,  F25J3/04412 ,  F25J3/04448 ,  F25J3/04812 ,  F25J3/04884 ,  F25J3/04933 ,  F25J2200/52 ,  F25J2240/10 ,  F25J2240/12 ,  F25J2240/44

摘要： The invention relates to a method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air in a distillation column system for nitrogen-oxygen separation, said distillation column system having at least one high-pressure column (8) and one low-pressure column (460), wherein the low-pressure column (460) is in a heat-exchanging connection with the high-pressure column (8) by means of a main condenser (461) designed as a condenser-evaporator. Feed air is compressed in an air compressor (2). The compressed feed air (6, 734, 802, 840) is cooled down in a main heat exchanger (20) and at least partially introduced into the high-pressure column (8). An oxygen-enriched liquid (462, 465) is removed from the high-pressure column (8) and fed to the low-pressure column (460) at a first intermediate position (464, 467, 906). A nitrogen-enriched liquid (468, 470) is removed from the high-pressure column (8) and/or the main condenser (461) and fed to the head of the low-pressure column (460). A liquid oxygen flow (11, 12) is removed from the distillation column system for nitrogen-oxygen separation, brought to an elevated pressure in the liquid state (13), introduced into the main heat exchanger (20) at said elevated pressure, evaporated or pseudo-evaporated and heated to approximately ambient temperature in the main heat exchanger (20), and finally obtained as a gaseous compressed oxygen product (14). A high-pressure process flow (34, 734) is brought into indirect heat exchange with the oxygen flow in the main heat exchanger (20) and then depressurized (36, 38; 736, 738), wherein the depressurized high-pressure flow (37, 737) is introduced at least partially in the liquid state into the distillation column system for nitrogen-oxygen separation. A gaseous circuit nitrogen flow (18, 19) is drawn from the high-pressure column and at least partially (21) compressed in a circuit compressor (22). A first sub-flow (45, 46; 244, 242, 230; 845, 846) of the circuit nitrogen flow is removed from the circuit compressor (22, 322), cooled down in the main heat exchanger (20), at least partially condensed in the bottom evaporator (9, 209) of the high-pressure column (8) in indirect heat exchange with the bottom liquid of the high-pressure column (8), and conducted back into the distillation column system for nitrogen-oxygen separation. A second sub-flow of the circuit nitrogen flow is branched off upstream and/or downstream of the circuit compressor and/or from an intermediate stage of the circuit compressor at a product pressure (P, P1, P2, P3, P4) and obtained as a compressed nitrogen product (27, 29, 53, 564, 565). The circuit compressor (22, 322) is designed as a hot compressor and is driven by means of external energy.

公开(公告)号：US20110139598A1

公开(公告)日：2011-06-16

申请号：US11911329

申请日：2006-03-29

申请人： Marc Wagner ,  Phillippe Grigoletto ,  Jean-Marc Bernhardt ,  Emmanuel Fano

发明人： Marc Wagner ,  Phillippe Grigoletto ,  Jean-Marc Bernhardt ,  Emmanuel Fano

IPC分类号： B01D3/32

CPC分类号： B01D3/322 ,  B01D3/32 ,  F25J3/04412 ,  F25J3/0486 ,  F25J3/04909 ,  F25J3/04933 ,  F25J2290/44

摘要： The invention concerns a distillation column (1) comprising means (21) for conveying at least one mixture to be distilled to the column, means (23) for drawing at least one fluid enriched in one constituent of the mixture from the column, inside the column, an evaporator-condenser (3) and means (25) for conveying a gas to be condensed and a liquid to be evaporated to the evaporator-condenser as well as means for removing the condensed gas and the evaporated liquid, at least one module of packing materials (5) located above the evaporator-condenser and at least one firebreak barrier (7A, 7B, 7C) between the evaporator-condenser and the module of packing materials.

摘要翻译： 本发明涉及一种蒸馏塔（1），其包括用于将至少一种待蒸馏的混合物输送到塔的装置（21），用于从该塔内吸入富含混合物的一种成分的至少一种流体的装置（23） 柱，蒸发器 - 冷凝器（3）和用于将待冷凝的气体输送到蒸发器 - 冷凝器的装置（25）以及用于去除冷凝气体和蒸发的液体的装置，至少一个模块 位于蒸发器 - 冷凝器之上的包装材料（5）和在蒸发器 - 冷凝器和包装材料组件之间的至少一个防火隔离屏（7A，7B，7C）。

公开(公告)号：US06173586B1

公开(公告)日：2001-01-16

申请号：US09386276

申请日：1999-08-31

申请人： Dante Patrick Bonaquist ,  John Fredric Billingham

发明人： Dante Patrick Bonaquist ,  John Fredric Billingham

IPC分类号： F25J100

CPC分类号： F25J3/04878 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04933 ,  F25J3/04969 ,  F25J2215/56 ,  F25J2235/50 ,  Y10S62/905

摘要： A cryogenic air separation system for producing very high purity oxygen employing a lower pressure column having a volume in its lower portion set off by a diaphragm, and an upgrader column communicating with the lower pressure column in a defined manner relative to the diaphragm.

摘要翻译： 一种低温空气分离系统，用于利用低压塔产生非常高纯度的氧气，该低压塔的下部通过隔膜排出的体积;以及升降塔，其以相对于隔膜限定的方式与低压塔相通。