Method of separating oxygen with the use of composite ceramic membranes
    71.
    发明授权
    Method of separating oxygen with the use of composite ceramic membranes 有权
    使用复合陶瓷膜分离氧气的方法

    公开(公告)号:US06368383B1

    公开(公告)日:2002-04-09

    申请号:US09589425

    申请日:2000-06-07

    IPC分类号: B01D5322

    摘要: A method of separating oxygen from an oxygen containing gas with a composite membrane capable of conducting oxygen ions and electrons. In accordance with the method, the composite membrane is subjected to an operational temperature and the oxygen containing gas at a cathode side thereof. The composite membrane has a dense layer, at least one active porous layer contiguous to the dense layer, and at least one porous support layer. The active porous layer has a thickness and a distribution of pore radii. The distribution of pore radii has a standard deviation from a theoretical radius that would produce a maximum operation flux through the thickness when the thickness is about equal to a product of a constant and the square root of the theoretical radius. The constant is a function of a material used to fabricate the active porous layer, the operational temperature and an oxygen partial pressure within the active porous layer, and a porosity and a tortuosity produced by the pore radii. The standard deviation of the log of the theoretical radius is equal to a product of 1.45 and a shape factor, the shape factor being greater than 0 and no greater than about 0.5.

    摘要翻译: 从含氧气体中分离出氧和能够导电氧离子和电子的复合膜的方法。 根据该方法,复合膜经受操作温度,阴极侧含有含氧气体。 复合膜具有致密层,与致密层邻接的至少一个活性多孔层和至少一个多孔载体层。 活性多孔层具有孔半径的厚度和分布。 孔半径的分布与理论半径的标准偏差,当理论半径的厚度约等于理论半径的常数和平方根的乘积时,将产生通过厚度的最大工作磁通。 常数是用于制造活性多孔层的材料的功能,活性多孔层内的操作温度和氧分压,以及由孔半径产生的孔隙率和曲折度。 理论半径的对数的标准偏差等于1.45的乘积和形状因子,形状因子大于0且不大于约0.5。

    Solid electrolyte systems for producing controlled purity oxygen
    73.
    发明授权
    Solid electrolyte systems for producing controlled purity oxygen 失效
    用于生产可控纯氧的固体电解质体系

    公开(公告)号:US6117210A

    公开(公告)日:2000-09-12

    申请号:US848260

    申请日:1997-04-29

    摘要: A process for separating a feed gas stream containing elemental oxygen and at least one other gas into an oxygen product gas stream having a selected concentration of oxygen, by removing the oxygen from a feed gas stream using an ion transport module containing an ion transport membrane having a retentate side and a permeate side to produce both an ultrapure oxygen gas stream emerging from the membrane into the permeate side and a retentate gas stream. The ultrapure oxygen gas stream is blended with an additive gas stream to produce an oxygen product gas stream having a selected concentration of oxygen.

    摘要翻译: 一种将含有元素氧和至少一种其它气体的进料气流分离成具有选定浓度的氧气的氧气产物气流的方法,通过使用含有离子迁移膜的离子迁移组件从原料气流中除去氧气, 滞留侧和渗透侧,以产生从膜流入渗透侧的超纯氧气流和滞留气流。 将超纯氧气流与添加气流混合以产生具有选定浓度的氧气的氧产物气流。

    Hybrid solid electrolyte ionic conductor systems for purifying inert
gases
    80.
    发明授权
    Hybrid solid electrolyte ionic conductor systems for purifying inert gases 失效
    用于净化惰性气体的混合固体电解质离子导体系统

    公开(公告)号:US5851266A

    公开(公告)日:1998-12-22

    申请号:US880879

    申请日:1997-06-23

    IPC分类号: B01D53/22 B01D69/02 B01J19/14

    CPC分类号: B01D53/226

    摘要: A process for removing oxygen from a feed gas stream to produce an oxygen-depleted retentate gas stream by supplying the feed gas stream to a bulk oxygen separation system for removing oxygen to produce an oxygen-depleted crude product gas stream and a first oxygen-containing permeate effluent stream, and supplying the oxygen-depleted crude product gas stream to a separator having a primary ion transport membrane to produce a second permeate effluent stream and the oxygen-depleted retentate gas stream. A reactive purge gas is added to react with a portion of the oxygen permeating through the primary ion transport membrane and purge the permeate side of the primary ion transport membrane, and/or a recycle gas stream comprising at least a portion of one gas stream produced during the process is added to at least one other of the gas streams.

    摘要翻译: 一种从进料气流中除去氧气以通过将原料气流供应到体氧分离系统以除去氧气以产生贫氧的粗产物气流和第一含氧的气体流的方法 渗透物流出物流,并将贫氧的粗产物气流供给到具有初级离子迁移膜的分离器中以产生第二渗透物流出物流和贫氧的滞留气流。 加入反应性净化气体以与透过初级离子迁移膜的氧气的一部分反应并吹扫主离子迁移膜的渗透侧,和/或包含产生一种气流的至少一部分的再循环气流 在该过程中加入到至少另一个气流中。