公开(公告)号：EP4416441A1

公开(公告)日：2024-08-21

申请号：EP22721947.4

申请日：2022-04-20

申请人： Praxair Technology, Inc.

发明人： HOWARD, Henry, Edward ,  RAUCH, Jeremiah, J.

IPC分类号： F25J1/00

CPC分类号： F25J1/0204 ,  F25J1/0288 ,  F25J1/0072 ,  F25J2230/2020130101 ,  F25J1/0022 ,  F25J2270/1620130101 ,  F25J1/0294 ,  F25J1/005 ,  F25J1/0265 ,  F25J1/023 ,  F25J2220/6220130101

公开(公告)号：EP2941608B8

公开(公告)日：2019-08-14

申请号：EP13808296.1

申请日：2013-11-19

申请人： Praxair Technology, Inc.

发明人： RAUCH, Jeremiah, J. ,  SARIGIANNIS, Catherine, B. ,  WARTA, Andrew, M. ,  DOWD, Sophia, J.

IPC分类号： F25J3/04

公开(公告)号：EP2941608B1

公开(公告)日：2019-06-26

申请号：EP13808296.1

申请日：2013-11-19

申请人： Praxair Technology Inc.

发明人： RAUCH, Jeremiah, J. ,  SARIGIANNIS, Catherine, B. ,  WARTA, Andrew, M. ,  DOWD, Sophia, J.

IPC分类号： F25J3/04

CPC分类号： F25J3/04781 ,  F25J3/04024 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/04296 ,  F25J3/04412 ,  F25J3/04812 ,  F25J3/04824 ,  F25J2220/40 ,  F25J2230/40 ,  F25J2240/42

摘要： A method and apparatus for separating air in which production of the liquid products can be selectively varied between high and low production rates by varying the pressure ratio across a turboexpander used in imparting refrigeration with the use of a branched flow path. The branched flow path has a system of valves to selectively and gradually introduce a compressed refrigerant air stream into either a booster compressor branch having a booster compressor to increase the pressure ratio during high modes of liquid production or a bypass branch that bypasses the booster compressor to decrease the pressure ratio during low modes of liquid production. A recycle branch is connected to the booster compressor branch to allow compressed air to be independently recycled from the outlet to the inlet of the booster compressor during turndown from the high to the low liquid mode of liquid production to prevent surge.

公开(公告)号：EP3374713A1

公开(公告)日：2018-09-19

申请号：EP16787986.5

申请日：2016-10-18

申请人： Praxair Technology Inc.

发明人： SARIGIANNIS, Catherine, B. ,  KNIGHT, Anna ,  JUANDI, Evelyn ,  ZHANG, Wei ,  RAUCH, Jeremiah, J.

IPC分类号： F25J3/04

CPC分类号： F25J3/04412 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/04224 ,  F25J3/04278 ,  F25J3/04296 ,  F25J3/04303 ,  F25J3/04393 ,  F25J3/04812 ,  F25J2210/06 ,  F25J2270/14 ,  F25J2270/40 ,  F25J2270/902

摘要： A system and method for providing supplemental refrigeration to an air separation plant is provided. A closed loop supplemental refrigeration circuit that can be easily retrofitted or added onto an air separation plant that increases the liquid product production capability of the air separation plant. The supplemental refrigeration capacity of the supplemental refrigeration circuit is controlled by removing or adding a portion of the refrigerant in the supplemental refrigeration circuit to adjust the inlet pressure while maintaining a substantially constant volumetric flow rate and substantially constant pressure ratio across the compressor. Removing the refrigerant from the supplemental refrigeration circuit decreases the refrigeration imparted by the supplemental refrigeration circuit and thus provides the capacity to turn-down liquid product make without shutting down the compressors and turbo-expanders in the supplemental refrigeration circuit.

公开(公告)号：EP2972029A2

公开(公告)日：2016-01-20

申请号：EP13763170.1

申请日：2013-09-11

申请人： Praxair Technology Inc.

发明人： RAUCH, Jeremiah, J. ,  WARTA, Andrew, M. ,  WU, Hao ,  PARSNICK, David, R. ,  DOWD, Sophia, J.

IPC分类号： F25J3/04

CPC分类号： F25J3/04412 ,  F25J1/0249 ,  F25J1/025 ,  F25J1/0251 ,  F25J1/0254 ,  F25J1/0255 ,  F25J3/0409 ,  F25J3/04187 ,  F25J3/042 ,  F25J3/04278 ,  F25J3/04296 ,  F25J3/04812 ,  F25J2245/40 ,  F25J2270/14 ,  F25J2270/40 ,  F25J2270/902

摘要： A system and method for air separation using a supplemental refrigeration cycle is provided. A portion of the refrigeration required by the air separation plant to produce a liquid product stream is supplied via a supplemental refrigeration circuit configured to direct a cooled refrigerant produced by the turboexpander through the main heat exchanger of the air separation plant. The refrigeration capacity is controlled by removing or adding a portion of the refrigerant in the supplemental refrigeration circuit to adjust the inlet pressure while maintaining a substantially constant volumetric flow rate and substantially constant pressure ratio across the compressor. Removing the refrigerant from the supplemental refrigeration circuit decreases the refrigeration imparted by the supplemental refrigeration circuit and thus decreases the production of the liquid product stream. Adding refrigerant allows for an increase in the refrigeration imparted by the supplemental refrigeration circuit and thus allows for increased production of the liquid product stream.

公开(公告)号：EP3149419B1

公开(公告)日：2019-10-30

申请号：EP14736516.7

申请日：2014-06-02

申请人： Praxair Technology, Inc.

发明人： RAUCH, Jeremiah, J. ,  DOWD, Sophia, J. ,  WARTA, Andrew, M. ,  SARIGIANNIS, Catherine, B. ,  ZHANG, Wei

IPC分类号： F25J3/04

公开(公告)号：EP3149419A1

公开(公告)日：2017-04-05

申请号：EP14736516.7

申请日：2014-06-02

申请人： Praxair Technology Inc.

发明人： RAUCH, Jeremiah, J. ,  DOWD, Sophia, J. ,  WARTA, Andrew, M. ,  SARIGIANNIS, Catherine, B. ,  ZHANG, Wei

IPC分类号： F25J3/04

摘要： A system and method for separating air in an air separation plant is provided. The disclosed systems and methods divert a portion of the compressed, purified air stream to a bypass system configured to selectively produce a higher pressure compressed output stream or a lower pressure compressed output stream. The higher pressure and/or lower pressure compressed output streams are cooled in a main heat exchanger by indirect heat transfer with a plurality of product streams from the air separation plant and then rectified in the distillation column system. A second portion of the compressed, purified air stream is partially cooled in the main heat exchanger and expanding in a turbo-expander to produce power and an exhaust stream which is directed to the distillation column system of the air separation plant where it imparts additional refrigeration generated by the expansion of the compressed air stream in the turbo-expander.

摘要翻译： 提供了一种用于分离空气分离设备中的空气的系统和方法。 所公开的系统和方法将一部分压缩的净化空气流转移到配置成选择性地产生较高压力的压缩输出流或低压压缩输出流的旁路系统。 较高压力和/或较低压力的压缩输出流在主热交换器中通过间接传热与来自空气分离设备的多个产物流冷却，然后在蒸馏塔系统中进行精馏。 压缩的纯化空气流的第二部分在主热交换器中部分冷却，并在涡轮膨胀机中膨胀以产生动力和排气流，该排气流被引导到空气分离设备的蒸馏塔系统， 通过涡轮膨胀机中的压缩空气流的膨胀而产生。

公开(公告)号：EP2941608A2

公开(公告)日：2015-11-11

申请号：EP13808296.1

申请日：2013-11-19

申请人： Praxair Technology Inc.

发明人： RAUCH, Jeremiah, J. ,  SARIGIANNIS, Catherine, B. ,  WARTA, Andrew, M. ,  DOWD, Sophia, J.

IPC分类号： F25J3/04

CPC分类号： F25J3/04781 ,  F25J3/04024 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/04296 ,  F25J3/04412 ,  F25J3/04812 ,  F25J3/04824 ,  F25J2220/40 ,  F25J2230/40 ,  F25J2240/42

摘要： A method and apparatus for separating air in which production of the liquid products can be selectively varied between high and low production rates by varying the pressure ratio across a turboexpander used in imparting refrigeration with the use of a branched flow path. The branched flow path has a system of valves to selectively and gradually introduce a compressed refrigerant air stream into either a booster compressor branch having a booster compressor to increase the pressure ratio during high modes of liquid production or a bypass branch that bypasses the booster compressor to decrease the pressure ratio during low modes of liquid production. A recycle branch is connected to the booster compressor branch to allow compressed air to be independently recycled from the outlet to the inlet of the booster compressor during turndown from the high to the low liquid mode of liquid production to prevent surge.

摘要翻译： 一种用于分离空气的方法和装置，其中通过改变用于赋予制冷的涡轮膨胀机与使用分支流动路径的压力比，可以在高生产率和低生产率之间选择性地改变液体产物的生产。 分支流路具有阀系统，用于选择性地并逐渐地将压缩的制冷剂空气流引导到具有增压压缩机的增压压缩机分支中，以在液体生产的高模式期间增加压力比，或者绕过增压压缩机的旁路分支 在液体生产的低模式下降低压力比。 再循环分支连接到增压压缩机分支，以允许压缩空气在从液体生产的高液体模式到低液体模式的调节期间独立地从出口延伸到增压压缩机的入口，以防止浪涌。