Catalyst containing oxygen transport membrane
    1.
    发明授权
    Catalyst containing oxygen transport membrane 有权
    含氧传输膜的催化剂

    公开(公告)号:US08323463B2

    公开(公告)日:2012-12-04

    申请号:US12968699

    申请日:2010-12-15

    摘要: A composite oxygen transport membrane having a dense layer, a porous support layer and an intermediate porous layer located between the dense layer and the porous support layer. Both the dense layer and the intermediate porous layer are formed from an ionic conductive material to conduct oxygen ions and an electrically conductive material to conduct electrons. The porous support layer has a high permeability, high porosity, and a high average pore diameter and the intermediate porous layer has a lower permeability and lower pore diameter than the porous support layer. Catalyst particles selected to promote oxidation of a combustible substance are located in the intermediate porous layer and in the porous support adjacent to the intermediate porous layer. The catalyst particles can be formed by wicking a solution of catalyst precursors through the porous support toward the intermediate porous layer.

    摘要翻译: 一种复合氧传输膜,其具有致密层,多孔载体层和位于致密层和多孔载体层之间的中间多孔层。 致密层和中间多孔层都由离子导电材料形成以导电氧离子和导电材料以导电。 多孔支撑层具有高渗透性,高孔隙率和高平均孔径,并且中间多孔层具有比多孔载体层更低的渗透性和更低的孔直径。 被选择用于促进可燃物质的氧化的催化剂颗粒位于中间多孔层和邻近中间多孔层的多孔载体中。 可以通过将催化剂前体的溶液通过多孔载体向中间多孔层芯吸而形成催化剂颗粒。

    Oxygen separation method utilizing an oxygen transport membrane reactor
    6.
    发明授权
    Oxygen separation method utilizing an oxygen transport membrane reactor 有权
    使用氧传输膜反应器的氧分离方法

    公开(公告)号:US07118612B2

    公开(公告)日:2006-10-10

    申请号:US10747169

    申请日:2003-12-30

    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。

    Ion-transport membrane assembly incorporating internal support
    7.
    发明授权
    Ion-transport membrane assembly incorporating internal support 失效
    内置支架的离子传输膜组件

    公开(公告)号:US06565632B1

    公开(公告)日:2003-05-20

    申请号:US10015622

    申请日:2001-12-17

    IPC分类号: B01D5322

    摘要: An ion-transport membrane assembly including a tubular, ion-transport membrane that is fabricated from one or more ion-transport, ceramic materials capable of ionic transport at an operational temperature of greater than 400° C. The membrane may be an oxygen transport membrane or a hydrogen transport membrane. A plurality of structural supporting members, fabricated from an open porous material and having an outer cylindrical surface, are inserted within the membrane, without being bonded to the membrane, to inhibit inward collapse of the membrane under application of a pressure applied to an exterior surface of the membrane. The structural supporting members are configured to permit relative movement between the outer surface of the structural supporting member and the interior surface of the tubular membrane during heating to or cooling from the operational temperature thereof.

    摘要翻译: 一种离子传输膜组件,其包括管状离子迁移膜,其由一种或多种能在大于400℃的操作温度下离子迁移的离子传输陶瓷材料制成。所述膜可以是氧传输膜 或氢输送膜。 由打开的多孔材料制成并且具有外圆柱形表面的多个结构支撑构件被插入到膜内,而不被粘合到膜上,以在施加到外表面上的压力下抑制膜的向内塌陷 的膜。 结构支撑构件构造成允许在从其工作温度加热到或冷却之前,结构支撑构件的外表面和管状膜的内表面之间的相对移动。

    Oxygen separation method using a ceramic membrane unit
    10.
    发明授权
    Oxygen separation method using a ceramic membrane unit 失效
    氧分离法采用陶瓷膜单元

    公开(公告)号:US06623714B2

    公开(公告)日:2003-09-23

    申请号:US09871956

    申请日:2001-06-04

    IPC分类号: B01D5322

    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。