公开(公告)号：US06623714B2

公开(公告)日：2003-09-23

申请号：US09871956

申请日：2001-06-04

申请人： Eric Hunter Shreiber ,  Edward Paul Eardley ,  Vijayaraghavan Srinivasan ,  Bart Antonie van Hassel ,  Minish Mahendra Shah

发明人： Eric Hunter Shreiber ,  Edward Paul Eardley ,  Vijayaraghavan Srinivasan ,  Bart Antonie van Hassel ,  Minish Mahendra Shah

IPC分类号： B01D5322

CPC分类号： B01D53/228 ,  B01D53/22 ,  C01B13/0251 ,  C01B2210/0046 ,  C01B2210/0062 ,  Y02P20/129

摘要： A method of separating oxygen using a ceramic membrane unit having one or more ceramic membranes, preferably formed of a mixed conducting ceramic, for instance, a perovskite, capable of conducting both oxygen ions and electrons. Oxygen is separated within the ceramic membrane unit under impetus of compressing an incoming oxygen containing feed. The compressor used in the compression is powered by the work of expansion produced by expanding a process stream composed of at least a portion of the retentate produced in the ceramic membrane unit. Prior to expansion, the process stream is cooled to allow the use of less expensive materials in expanders used in the expansion. As a result, expansion of the process stream alone is insufficient to meet the power requirements involved in the compression. Interstage expansion with reheating is used to make up for the power deficit.

摘要翻译： 使用具有一个或多个陶瓷膜的陶瓷膜单元的分离方法，该陶瓷膜优选由能够导电氧离子和电子的混合导电陶瓷，例如钙钛矿形成。 在压缩进入含氧进料的动力下，陶瓷膜单元内的氧气分离。 在压缩机中使用的压缩机由通过膨胀由陶瓷膜单元中产生的至少一部分滞留物组成的工艺流而产生的膨胀作用来提供动力。 在膨胀之前，将工艺流冷却以允许在膨胀器中使用的膨胀器中使用较便宜的材料。 因此，单独的工艺流的扩展不足以满足压缩中涉及的功率要求。 再加热阶段的扩张用来弥补电力赤字。

公开(公告)号：US07118612B2

公开(公告)日：2006-10-10

申请号：US10747169

申请日：2003-12-30

申请人： Eric Hunter Shreiber ,  Bart Antonie van Hassel ,  Ravi Prasad

发明人： Eric Hunter Shreiber ,  Bart Antonie van Hassel ,  Ravi Prasad

IPC分类号： B01D53/22

CPC分类号： B01D53/22

摘要： A method of separating oxygen from an oxygen containing stream in which compressed and heated oxygen is introduced into cathode side of an oxygen transport membrane reactor. Oxygen is permeated from the cathode side to the anode side. Motive fluid that is introduced into an ejector draws an oxygen permeate containing stream from the anode side at a subatmospheric pressure to form an oxygen containing product stream. The motive fluid, which can be steam raised by combustion used in heating the reactor, can be separated from the oxygen containing product stream to form an oxygen product stream. The use of an ejector lowers the partial pressure of the oxygen at the anode side of the membrane reactor and therefore the degree to which the oxygen containing stream need be compressed.

摘要翻译： 从含氧气流中分离氧气的方法，其中将压缩和加热的氧气引入到氧传输膜反应器的阴极侧。 氧从阴极侧渗透到阳极侧。 引入喷射器的运动流体在低于大气压的压力下从阳极侧吸收含氧气渗透物流以形成含氧产物流。 可以通过用于加热反应器的燃烧引起的蒸汽升高的运动流体与含氧产物流分离以形成氧产物流。 喷射器的使用降低了膜反应器阳极侧氧气的分压，因此降低了含氧气流的压缩程度。