Two-Stage Aromatics Isomerization Process
    11.
    发明申请
    Two-Stage Aromatics Isomerization Process 失效
    两阶段芳香族异构化过程

    公开(公告)号:US20080183023A1

    公开(公告)日:2008-07-31

    申请号:US12056553

    申请日:2008-03-27

    IPC分类号: C07C5/22

    摘要: This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain an improved yield of para-xylene from the mixture relative to prior art processes.

    摘要翻译: 本发明涉及使两个连续区域中的烷基芳族化合物的非平衡混合物异构化的方法,第一区域在不使用无铂的催化剂的情况下在不存在氢气的情况下操作,第二区域使用包含分子筛和铂的催化剂 - 组合金属组分,以获得相对于现有技术方法从混合物中提高的对二甲苯的产率。

    Two-stage aromatics isomerization process
    12.
    发明授权
    Two-stage aromatics isomerization process 失效
    两阶段芳烃异构化过程

    公开(公告)号:US07368620B2

    公开(公告)日:2008-05-06

    申请号:US11171964

    申请日:2005-06-30

    IPC分类号: C07C5/27

    摘要: This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain improved yield of para-xylene from the mixture relative to prior art processes.

    摘要翻译: 本发明涉及使两个连续区域中的烷基芳族化合物的非平衡混合物异构化的方法,第一区域在不使用无铂的催化剂的情况下在不存在氢气的情况下操作,第二区域使用包含分子筛和铂的催化剂 - 组合金属组分,以相对于现有技术方法从混合物中获得改善的对二甲苯的产率。

    Co-current vapor-liquid contacting apparatuses for offshore processes
    14.
    发明授权
    Co-current vapor-liquid contacting apparatuses for offshore processes 有权
    用于海上工艺的同时气液接触装置

    公开(公告)号:US08833742B2

    公开(公告)日:2014-09-16

    申请号:US13229531

    申请日:2011-09-09

    申请人: Zhanping Xu Lubo Zhou

    发明人: Zhanping Xu Lubo Zhou

    CPC分类号: B01D3/24 B01D3/28 B01D3/324

    摘要: An offshore co-current vapor-liquid contacting apparatus includes stages having contacting modules. Each contacting module includes a downcomer extending in a direction and has downcomer baffles distanced from each other in the direction to define downcomer cells within the downcomer. Each downcomer includes an outlet proximate to a co-current flow channel. A receiving pan extends substantially parallel to the downcomer and has receiving pan baffles distanced from each other in the direction to define receiving pan sections within the receiving pan. A vapor-liquid separation device has an inlet surface proximate to the co-current flow channel and an outlet surface above the receiving pan. Ducts are provided, with each duct having an upper end in fluid communication with a respective receiving pan section and a lower end in fluid communication with a selected downcomer cell in an immediately inferior stage.

    摘要翻译: 海上并流蒸气 - 液体接触装置包括具有接触模块的阶段。 每个接触模块包括沿着一个方向延伸的降液管,并且具有在限定降液管内的降液管单元的方向上彼此远离的降液管。 每个降液管包括靠近并流流动通道的出口。 接收盘基本上平行于降液管延伸,并且在接收盘内限定接收盘部分的方向上具有彼此间隔的接收盘挡板。 气液分离装置具有靠近并流流动通道的入口表面和接收盘上方的出口表面。 提供了管道,其中每个管道具有与相应的接收盘部分流体连通的上端,并且在末级中与选定的降液管池流体连通的下端。

    Integrated process for floating liquefied natural gas pretreatment
    15.
    发明授权
    Integrated process for floating liquefied natural gas pretreatment 有权
    浮动液化天然气预处理综合工艺

    公开(公告)号:US08414683B2

    公开(公告)日:2013-04-09

    申请号:US13091782

    申请日:2011-04-21

    IPC分类号: B01D53/22

    摘要: The present invention provides a membrane/amine column system and process for removing acid gases from natural gas on a floating liquefied natural gas vessel. Several process configurations are provided to deal with a reduction in the effectiveness of the amine column by increasing the amount of acid gases being removed by the membrane system prior to the natural gas being sent to the amine column.

    摘要翻译: 本发明提供了一种膜/胺柱系统和用于从漂浮的液化天然气容器上从天然气中除去酸性气体的方法。 提供几种方法构型以通过在将天然气送入胺柱之前增加被膜系统除去的酸性气体的量来降低胺柱的有效性。

    High permeability membrane operated at elevated temperature for upgrading natural gas
    17.
    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

    IPC分类号: B01D53/22

    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。

    POLYBENZOXAZOLE MEMBRANES
    18.
    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

    IPC分类号: B01D53/22

    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%。

    High Performance Cross-Linked Polybenzoxazole and Polybenzothiazole Polymer Membranes
    20.
    发明申请
    High Performance Cross-Linked Polybenzoxazole and Polybenzothiazole Polymer Membranes 有权
    高性能交联聚苯并恶唑和聚苯并噻唑聚合物膜

    公开(公告)号:US20100133186A1

    公开(公告)日:2010-06-03

    申请号:US12412633

    申请日:2009-03-27

    IPC分类号: B01D71/06 B01D61/36

    摘要: In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked polybenzoxazole and polybenzothiazole polymer membranes are prepared by: 1) first synthesizing polyimide polymers comprising pendent functional groups (e.g., —OH or —SH) ortho to the heterocyclic imide nitrogen and cross-linkable functional groups in the polymer backbone; 2) fabricating polyimide membranes from these polymers; 3) converting the polyimide membranes to polybenzoxazole or polybenzothiazole membranes by heating under inert atmosphere such as nitrogen or vacuum; and 4) finally converting the membranes to high performance cross-linked polybenzoxazole or polybenzothiazole membranes by a crosslinking treatment, preferably UV radiation. The membranes can be fabricated into any convenient geometry. The high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes of the present invention are suitable for a variety of liquid, gas, and vapor separations.

    摘要翻译: 在本发明中,开发了高性能交联聚苯并恶唑和聚苯并噻唑聚合物膜以及制备和使用这些膜的方法。 交联的聚苯并恶唑和聚苯并噻唑聚合物膜是通过以下步骤制备的:1)首先合成聚酰亚胺聚合物,其包含与杂环酰亚胺氮邻接的侧基官能团(例如-OH或-SH)和聚合物主链中的可交联官能团; 2)从这些聚合物制造聚酰亚胺膜; 3)通过在惰性气氛如氮气或真空下加热将聚酰亚胺膜转化为聚苯并恶唑或聚苯并噻唑膜; 和4)最后通过交联处理,优选UV辐射将膜转化成高性能交联聚苯并恶唑或聚苯并噻唑膜。 膜可以制造成任何方便的几何形状。 本发明的高性能交联聚苯并恶唑和聚苯并噻唑聚合物膜适用于各种液体,气体和蒸气分离。