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109 条记录 (耗时 0.03 秒)

    Membrane system for natural gas upgrading
    4.
    发明授权
    Membrane system for natural gas upgrading 有权
    天然气升级膜系统

    公开(公告)号：US08575414B2

    公开(公告)日：2013-11-05

    申请号：US13287582

    申请日：2011-11-02

    申请人： Chunqing Liu ,  Syed A. Faheem ,  Raisa Minkov

    发明人： Chunqing Liu ,  Syed A. Faheem ,  Raisa Minkov

    IPC分类号： C07C7/144

    CPC分类号： C10L3/104 ,  B01D53/22 ,  B01D2256/245 ,  B01D2257/504 ,  C10L3/101 ,  Y02C10/04 ,  Y02C10/10

    摘要： The present invention involves the use of a novel membrane system for natural gas upgrading. This membrane system includes a first-stage membrane such as a membrane prepared from the polymer of intrinsic microporosity (PIM) to selectively remove hydrocarbons from C3 to C35 to control the dew point of natural gas, and a second-stage membrane such as a polybenzoxazole (PBO) or crosslinked PBO membrane to selectively remove CO2 from natural gas. The new membrane system described in the current invention eliminates the use of high cost and high footprint membrane pretreatment. Therefore, the membrane system can significantly reduce the footprint and cost for natural gas upgrading compared to the current commercially available membrane systems that include a non-membrane-related pretreatment system.

    摘要翻译： 本发明涉及使用新型膜系统进行天然气升级。 该膜系统包括由本征微孔聚合物（PIM）制备的膜的第一级膜，以选择性地从C3至C35去除烃，以控制天然气的露点;以及第二级膜，例如聚苯并恶唑 （PBO）或交联的PBO膜以选择性地从天然气中除去CO 2。 本发明描述的新膜系统消除了高成本和高占地面积的膜预处理的使用。 因此，与目前市场上可买到的膜系统（包括非膜相关的预处理系统）相比，膜系统可显着减少天然气升级的占地面积和成本。

    Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) membranes
    6.
    发明授权
    Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) membranes 有权
    使用多孔疏水性聚（醚醚酮）膜进行烯烃/石蜡分离的方法

    公开(公告)号：US08203028B2

    公开(公告)日：2012-06-19

    申请号：US12788595

    申请日：2010-05-27

    申请人： Santi Kulprathipanja ,  Chunqing Liu

    发明人： Santi Kulprathipanja ,  Chunqing Liu

    IPC分类号： C07C7/144

    CPC分类号： C07C7/144 ,  C07C9/00 ,  C07C11/00

    摘要： Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) (PEEK) membranes are provided. In accordance with an exemplary embodiment, a process for olefin/paraffin separation comprises providing a porous membrane formed of PEEK polymer functionalized with hydrophobic groups, the porous membrane having a first surface and a second surface. The first surface of the porous membrane is contacted with a feed comprising an olefin and a paraffin and a permeate is caused to flow from the second surface of the porous membrane. The permeate has a concentration of the paraffin that is higher than a concentration of the paraffin of the feed.

    摘要翻译： 提供利用多孔疏水性聚（醚醚酮）（PEEK）膜的烯烃/石蜡分离方法。 根据示例性实施方案，烯烃/石蜡分离方法包括提供由疏水基官能化的PEEK聚合物形成的多孔膜，所述多孔膜具有第一表面和第二表面。 多孔膜的第一表面与包含烯烃和石蜡的进料接触，使渗透物从多孔膜的第二表面流出。 渗透物的石蜡浓度高于饲料中石蜡的浓度。

    High permeability membrane operated at elevated temperature for upgrading natural gas
    8.
    发明授权
    High permeability membrane operated at elevated temperature for upgrading natural gas 有权
    高渗透膜在高温下运行，用于升级天然气

    公开(公告)号：US08083834B2

    公开(公告)日：2011-12-27

    申请号：US12116255

    申请日：2008-05-07

    申请人： Lubo Zhou ,  Chunqing Liu

    发明人： Lubo Zhou ,  Chunqing Liu

    IPC分类号： B01D53/22

    CPC分类号： B01D53/228 ,  B01D71/62 ,  C10L3/10 ,  C10L3/102

    摘要： The present invention discloses a new process of treating natural gas using high gas permeability polybenzoxazole polymer membranes operated at high temperatures that can provide sufficient dew point margin for the product gas. The high gas permeability polybenzoxazole polymer membranes can be used for a single stage membrane system or for the first stage membrane in a two stage membrane system for natural gas upgrading. Simulation study has demonstrated that a costly membrane pretreatment system such as a MemGuard™ system will not be required in the present new process. The new process can achieve significant capital cost saving and reduce the existing membrane footprint greater than 50%.

    摘要翻译： 本发明公开了一种使用高气体渗透性聚苯并恶唑聚合物膜处理天然气的新方法，其在高温下操作，可为产品气体提供足够的露点。 高透气性聚苯并恶唑聚合物膜可用于单级膜系统或用于二级膜系统中用于天然气升级的第一级膜。 模拟研究表明，在目前的新工艺中，不需要昂贵的膜预处理系统，如MemGuard™系统。 新工艺可以实现显着的资本成本节约，并将现有的膜占地面积减少到50％以上。

    Crosslinked organic-inorganic hybrid membranes and their use in gas separation
    9.
    发明授权
    Crosslinked organic-inorganic hybrid membranes and their use in gas separation 有权
    交联的有机 - 无机杂化膜及其在气体分离中的应用

    公开(公告)号：US08030399B2

    公开(公告)日：2011-10-04

    申请号：US12847067

    申请日：2010-07-30

    申请人： Chunqing Liu ,  Stephen T. Wilson ,  Santi Kulprathipanja

    发明人： Chunqing Liu ,  Stephen T. Wilson ,  Santi Kulprathipanja

    IPC分类号： C08B37/00

    CPC分类号： C08L1/20 ,  B01D53/228 ,  B01D67/0079 ,  B01D71/00 ,  B01D71/16 ,  B01D71/52 ,  B01D71/70 ,  B01D2257/102 ,  B01D2257/504 ,  C08B7/00 ,  C08G65/33306 ,  C08G65/33351 ,  C08G65/336 ,  C08G2650/58 ,  C08L71/02 ,  Y02C10/10 ,  Y02P20/152

    摘要： The present invention is for crosslinked membranes and in particular for crosslinked poly(ethylene oxide)-cellulose acetate-silsesquioxane (PEO-CA-Si) organic-inorganic hybrid membranes and their use in gas separation. These crosslinked PEO-CA-Si membranes were prepared by in-situ sol-gel co-condensation of crosslinkable PEO-organotrialkoxysilane and CA-organotrialkoxysilane polymers in the presence of acetic acid catalyst during the formation of membranes. The crosslinkable PEO- and CA-organotrialkoxysilane polymers were synthesized via the reaction between the hydroxyl groups on PEO (or on CA) and the isocyanate on organotrialkoxysilane to form urethane linkages under mild conditions. The crosslinked PEO-CA-Si membranes exhibited both increased selectivity of CO2/N2 and CO2 permeability as compared to a CA membrane, suggesting that these membranes are very promising for gas separations such as CO2/N2 separation.

    摘要翻译： 本发明涉及交联膜，特别是交联聚（环氧乙烷） - 醋酸纤维素 - 倍半硅氧烷（PEO-CA-Si）有机 - 无机混合膜及其在气体分离中的应用。 这些交联的PEO-CA-Si膜通过在形成膜期间在乙酸催化剂存在下通过可交联的PEO-有机三烷氧基硅烷和CA-有机三烷氧基硅烷聚合物的原位溶胶 - 凝胶共缩合制备。 通过PEO（或CA）上的羟基与有机三烷氧基硅烷上的异氰酸酯之间的反应合成可交联PEO-和CA-有机三烷氧基硅烷聚合物，以在温和条件下形成氨基甲酸酯键。 与CA膜相比，交联的PEO-CA-Si膜显示出增加的CO 2 / N 2选择性和CO 2渗透性，这表明这些膜对于气体分离如CO 2 / N 2分离是非常有希望的。

    POLYBENZOXAZOLE MEMBRANES
    10.
    发明申请
    POLYBENZOXAZOLE MEMBRANES 有权
    聚苯并噻唑膜

    公开(公告)号：US20110072973A1

    公开(公告)日：2011-03-31

    申请号：US12879208

    申请日：2010-09-10

    申请人： Chunqing Liu ,  Raisa Minkov ,  Man-Wing Tang ,  Lubo Zhou ,  Jeffery C. Bricker

    发明人： Chunqing Liu ,  Raisa Minkov ,  Man-Wing Tang ,  Lubo Zhou ,  Jeffery C. Bricker

    IPC分类号： B01D53/22

    CPC分类号： B01D53/228 ,  B01D61/362 ,  B01D67/0011 ,  B01D71/62 ,  B01D71/82 ,  B01D2323/08

    摘要： The present invention discloses a blends of an aromatic polyimide polymer and a polymer containing aromatic sulfonic acid groups that can be converted into polybenzoxazole (PBO) membranes for gas, vapor, and liquid separations. The PBO membranes that were prepared by thermal treating aromatic polyimide membranes containing between 0.05 and 20 wt-% of a poly(styrene sulfonic acid) polymer. These polymers showed up to 95% improvement in selectivity for CO2/CH4 and H2/CH4 separations compared to PBO membranes prepared from corresponding aromatic polyimide membranes without a poly(styrene sulfonic acid) polymer.

    摘要翻译： 本发明公开了芳族聚酰亚胺聚合物和含有芳族磺酸基团的聚合物的混合物，其可以转化成用于气体，蒸气和液体分离的聚苯并恶唑（PBO）膜。 通过热处理含有0.05至20重量％聚（苯乙烯磺酸）聚合物的芳族聚酰亚胺膜制备的PBO膜。 与没有聚（苯乙烯磺酸）聚合物的相应芳族聚酰亚胺膜制备的PBO膜相比，这些聚合物显示出对CO 2 / CH 4和H 2 / CH 4分离的选择性提高高达95％。