公开(公告)号：US5224336A

公开(公告)日：1993-07-06

申请号：US718504

申请日：1991-06-20

申请人： Rakesh Agrawal ,  David M. Espie ,  Declan P. O'Connor ,  Jorge A. Mandler ,  Arthur R. Smith ,  Donald W. Woodward

发明人： Rakesh Agrawal ,  David M. Espie ,  Declan P. O'Connor ,  Jorge A. Mandler ,  Arthur R. Smith ,  Donald W. Woodward

IPC分类号： F25J3/04 ,  F25J3/06

CPC分类号： F25J3/046 ,  F25J3/04351 ,  F25J3/04412 ,  F25J3/0449 ,  F25J3/04545 ,  F25J3/04563 ,  F25J2245/42 ,  F25J2290/10 ,  F25J2290/62

摘要： A process and system for controlling a cryogenic air separation unit during rapid changes in production. During operation of an air separation unit, demands for oxygen will vary and the pressure of the feed air will fluctuate. The changes in oxygen demand and feed air pressure translate into a ramping, either up or down, of the distillation system pressure in the air separation unit. Because the product streams have tight purity requirements, the ramping system pressure (which could adversely affect product purity) is compensated for. This compensation is by way of a net transfer of refrigeration, in the form of liquid nitrogen, into and out of the distillation system. This transfer of refrigeration is implemented using a storage vessel of liquid nitrogen connected to the reflux path of the distillation system. Liquid nitrogen via the reflux path is removed and stored or added to the distillation system to decrease or increase the refrigeration, respectively.

公开(公告)号：US06651460B2

公开(公告)日：2003-11-25

申请号：US10282406

申请日：2002-10-29

申请人： Declan P. O'Connor

发明人： Declan P. O'Connor

IPC分类号： F25J302

CPC分类号： F25J3/04412 ,  F25J3/04303 ,  F25J3/04448 ,  F25J3/04454 ,  F25J3/04872 ,  F25J3/04939 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2200/96 ,  F25J2205/30 ,  F25J2245/40 ,  F25J2245/42 ,  F25J2290/10 ,  Y10S62/90

摘要： Oxygen-containing gas comprising no more than about 50 mol % oxygen is fed (150) to an auxiliary separation column (40) in a multiple column cryogenic air distillation system comprising at least a higher pressure (“HP”) column (10) and a lower pressure (“LP”) column (30) for separation into nitrogen-rich overhead vapor and oxygen-rich liquid. Oxygen-rich liquid is fed (154) from the auxiliary column (40) to an intermediate location in the LP column (30). The auxiliary column (40) is refluxed with a liquid stream from or derived from the HP column (10). One advantage of the invention is that the diameter of the upper sections (II, III) of the LP column (30) need no longer be larger than the diameter of the rest of the column system thereby increasing the capacity of the column system (under the constraint of a defined maximum column section diameter).

摘要翻译： 包含不超过约50mol％氧气的含氧气体在包括至少较高压力（“HP”）塔（10）的多塔低温空气蒸馏系统中被供给（150）到辅助分离塔（40）和 用于分离成富氮塔顶蒸气和富氧液体的较低压力（“LP”）塔（30）。 富氧液体（154）从辅助塔（40）进入LP塔（30）的中间位置。 辅助塔（40）与来自HP塔（10）的液流一起回流。 本发明的一个优点是，LP塔（30）的上部（II，III）的直径不需要大于塔系统的其余部分的直径，从而增加塔系统的容量（下 定义的最大柱截面直径的约束）。

公开(公告)号：US06360561B1

公开(公告)日：2002-03-26

申请号：US09798111

申请日：2001-03-02

申请人： Rodney J. Allam ,  Declan P. O'Connor

发明人： Rodney J. Allam ,  Declan P. O'Connor

IPC分类号： F25J300

摘要： High pressure gaseous oxygen is obtained safely and without compression by heating pumped liquid oxygen in a printed circuit type heat exchanger having layers of transversely extending laterally spaced channels with each layer being in thermal contact with at least one other layer. Oxygen is vaporized in channels of oxygen-layers against heat exchange fluid passing through channels of heat exchange layers. The walls of the oxygen layer channels are formed of ferrous alloy and have a cross-section, in a plane perpendicular to the direction of flow, having a thickness at its narrowest of at least about 10%, and on average at least about 15%, of the combined hydraulic mean diameters of the adjacent channels, and the ratio of cross-sectional area, in said plane, of the walls to the cross-sectional area of the channels is no less than about 0.7.

公开(公告)号：US06889524B2

公开(公告)日：2005-05-10

申请号：US10630609

申请日：2003-07-30

申请人： Declan P. O'Connor ,  Rebecca J. Andrew ,  Christopher Suggitt ,  Paul Higginbotham

发明人： Declan P. O'Connor ,  Rebecca J. Andrew ,  Christopher Suggitt ,  Paul Higginbotham

IPC分类号： F17C9/02 ,  F25J3/04 ,  F25J3/00

CPC分类号： F25J3/04539 ,  F17C9/02 ,  F17C2205/0326 ,  F17C2221/011 ,  F17C2221/014 ,  F17C2221/015 ,  F17C2221/016 ,  F17C2221/03 ,  F17C2221/031 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2225/0123 ,  F17C2225/0153 ,  F17C2225/033 ,  F17C2225/035 ,  F17C2227/0135 ,  F17C2227/0393 ,  F17C2250/0626 ,  F17C2250/0636 ,  F17C2265/015 ,  F25J3/04545 ,  F25J3/04824 ,  F25J3/04836 ,  F25J3/04951 ,  F25J2235/50 ,  F25J2250/50 ,  F25J2290/62

摘要： A back-up quantity of a “first” gas is supplied temporarily to maintain the level of production of the first gas from a cryogenic separation of a gaseous mixture comprising the first gas and at least one other gas in the event of reduction in the level of production of said first gas from the separation. In the event of reduction in the level of production of said first gas from the separation, liquefied first gas inventory is withdrawn from the or at least one of said cryogenic distillation systems and vaporised to produce said back-up quantity of first gas. The invention has particular application to the production of gaseous oxygen (“GOX”) from the separation of air.

摘要翻译： 临时提供备用量的“第一”气体，以便在降低水平的情况下，保持包含第一气体和至少一种其它气体的气体混合物的低温分离中的第一气体的产生水平 从分离产生所述第一气体。 在从分离中降低所述第一气体的生产水平的情况下，液化的第一气体库存从所述或至少一个所述低温蒸馏系统中排出并蒸发以产生所述备用量的第一气体。 本发明特别适用于从空气分离产生气态氧（“GOX”）。

公开(公告)号：US06484533B1

公开(公告)日：2002-11-26

申请号：US09705209

申请日：2000-11-02

申请人： Rodney J. Allam ,  Rebecca J. Cotton ,  John Lloyd Dillon, IV ,  Declan P. O'Connor

发明人： Rodney J. Allam ,  Rebecca J. Cotton ,  John Lloyd Dillon, IV ,  Declan P. O'Connor

IPC分类号： F25J300

CPC分类号： F25J1/004 ,  F04D25/163 ,  F25J1/0012 ,  F25J1/0015 ,  F25J1/0017 ,  F25J1/002 ,  F25J1/0022 ,  F25J1/0037 ,  F25J1/0202 ,  F25J1/0288 ,  F25J2230/20 ,  F25J2270/06

摘要： A process of liquefying gas to produce a liquid cryogen comprising compressing a gas stream using a compressor, work expanding the compressed gas stream using at least one expansion turbine to produce an expanded gas stream together with power, mechanically transferring the power generated by the expansion turbine(s) to drive the compressor, using the expanded gas stream to provide refrigeration duty for liquefaction, and recycling the cooled expanded compressed gas stream to the compressor.

摘要翻译： 一种液化气体以产生液体冷冻剂的方法，包括使用压缩机压缩气流，使用至少一个膨胀涡轮机对压缩气体流进行扩展，以产生与动力一起膨胀的气流，机械地传递由膨胀涡轮 以驱动压缩机，使用膨胀的气流来提供用于液化的制冷负荷，以及将冷却的膨胀压缩气流再循环到压缩机。