利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

60 条记录 (耗时 0.054 秒)

    Reaction process in hybrid reactor for propylene ammoxidation
    2.
    发明授权
    Reaction process in hybrid reactor for propylene ammoxidation 有权

    公开(公告)号：US6143915A

    公开(公告)日：2000-11-07

    申请号：US198300

    申请日：1998-11-23

    申请人： Lubo Zhou ,  W. Patrick Dennler ,  Anil R. Oroskar ,  Bipin V. Vora ,  Hayim Abrevaya ,  Laurence O. Stine

    发明人： Lubo Zhou ,  W. Patrick Dennler ,  Anil R. Oroskar ,  Bipin V. Vora ,  Hayim Abrevaya ,  Laurence O. Stine

    IPC分类号： B01J8/00 ,  B01J8/24 ,  B01J8/26 ,  B01J19/26 ,  C07C253/26 ,  C07C255/08 ,  C07C253/00

    CPC分类号： B01J8/0055 ,  B01J19/26 ,  B01J8/1827 ,  B01J8/26 ,  C07C253/26 ,  B01J2208/00132 ,  B01J2208/00292 ,  B01J2208/00548 ,  Y02P20/52

    摘要： A hybrid reactor arrangement provides a reactive design that achieves higher acrylonitrile yield and lower catalyst circulating rate. The hybrid reactor design first passes a mixture of reactants and catalyst through a circulating bubbling bed reaction section. Heat exchange coils or other cooling medium in the bubbling bed reactor section maintain temperature in a range that will maximize the selectivity of reactants to the acrylonitrile product. The bubbling bed reactor section provides the initial conversion of the reactant. A circulating fluidized bed reaction zone finishes the conversion of reactants to a high yield under conditions that reduce the occurrence of secondary reactions that could otherwise produce unwanted by-products. The circulating fluidized bed reactor section maintains nearly plug flow conditions that allow continued conversion of unreacted feed components through primary reactions while limiting the time for secondary reactions to continue and diminish the final yield of products. Selectivity and conversion may also be improved by sequential addition of oxygen into the CFB reaction section. The sequential addition of oxygen may occur by the direct injection of an oxygen-containing gas or by the delivery of re-oxidized catalyst particles that are fully recharged with the lattice oxygen necessary for the reaction. Through this method the hybrid reactor provides the typical 5% improvement of higher acrylonitrile product yield from CFB-type reaction zones while reducing the required catalyst circulation by a factor of 10 or more.

    Processes and systems for discharging amine byproducts formed in an amine-based solvent
    6.
    发明授权
    Processes and systems for discharging amine byproducts formed in an amine-based solvent 有权
    用于排出在胺系溶剂中形成的胺副产物的方法和系统

    公开(公告)号：US08563296B2

    公开(公告)日：2013-10-22

    申请号：US12953865

    申请日：2010-11-24

    申请人： David W. Greer ,  Graham Ellis ,  Edward Zbacnik ,  Lubo Zhou

    发明人： David W. Greer ,  Graham Ellis ,  Edward Zbacnik ,  Lubo Zhou

    IPC分类号： C12N1/12

    CPC分类号： C12M43/04 ,  B01D53/1425 ,  B01D53/1475 ,  C02F1/20 ,  C02F3/322 ,  C02F2101/38 ,  C02F2103/18 ,  C02F2209/06 ,  C02F2303/16 ,  C12M29/26 ,  C12M43/08

    摘要： Embodiments of a process for discharging amine byproducts formed in an amine-based solvent are provided. The process comprises the steps of contacting the amine-based solvent with flue gas comprising carbon dioxide, oxygen, nitrogen, NOx, SOx, or mixtures thereof to form a carbon dioxide-laden amine-based solvent that contains the amine byproducts. Carbon dioxide is separated from the carbon dioxide-laden amine-based solvent to form a carbon dioxide-depleted amine-based solvent. The amine byproducts from the carbon dioxide-depleted amine-based solvent are fed to an algae source.

    摘要翻译： 提供了在胺系溶剂中形成的胺副产物的排出方法的实施方式。 该方法包括以下步骤：使胺基溶剂与包含二氧化碳，氧气，氮气，NOx，SO x或其混合物的烟气接触，以形成含有胺副产物的含二氧化碳的胺基溶剂。 将二氧化碳与载有二氧化碳的胺类溶剂分离以形成不含二氧化碳的胺类溶剂。 将来自二氧化碳贫化胺基溶剂的胺副产物进料至藻源。

    Staged membrane system for gas, vapor, and liquid separations
    7.
    发明授权
    Staged membrane system for gas, vapor, and liquid separations 有权
    用于气体，蒸汽和液体分离的分段膜系统

    公开(公告)号：US08318013B2

    公开(公告)日：2012-11-27

    申请号：US13329401

    申请日：2011-12-19

    申请人： Lubo Zhou ,  Chunqing Liu ,  Carlos A. Cabrera ,  Peter K. Coughlin

    发明人： Lubo Zhou ,  Chunqing Liu ,  Carlos A. Cabrera ,  Peter K. Coughlin

    IPC分类号： B01D61/36 ,  B01D71/62 ,  B01D53/22 ,  B01D63/00

    CPC分类号： B01D53/228 ,  B01D67/0006 ,  B01D71/62 ,  B01D2256/16 ,  B01D2256/24 ,  B01D2257/504 ,  B01D2258/06 ,  B01D2323/30 ,  B01D2323/345 ,  Y02C10/10

    摘要： The present invention involves the use of a multi-stage membrane system for gas, vapor, and liquid separations. In this multi-stage membrane system, high selectivity and high permeance or at least high selectivity polybenzoxazole membranes or cross-linked polybenzoxazole membranes are applied for a pre-membrane or both the pre-membrane and the secondary membrane. A primary membrane can be from conventional glassy polymers. This multi-stage membrane system can reduce inter-stage compression cost, increase product recovery and product purity for gas, vapor, and liquid separations. It can also save the cost compared to the system using all the high cost polybenzoxazole membranes or cross-linked polybenzoxazole membranes.

    摘要翻译： 本发明涉及使用多级膜系统进行气体，蒸汽和液体分离。 在该多级膜系统中，对膜前或膜前和膜进行二次膜的预选择，高选择性和高渗透性或至少高选择性的聚苯并恶唑膜或交联聚苯并恶唑膜。 初级膜可以来自常规玻璃状聚合物。 这种多级膜系统可以降低气体，蒸汽和液体分离的阶段间压缩成本，提高产品回收率和产品纯度。 与使用所有高成本聚苯并恶唑膜或交联聚苯并恶唑膜的系统相比，还可以节省成本。

    METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES
    10.
    发明申请
    METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES 有权
    提高聚苯并噻唑薄膜选择性的方法

    公开(公告)号：US20100133190A1

    公开(公告)日：2010-06-03

    申请号：US12566834

    申请日：2009-09-25

    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： B01D71/76 ,  B01D67/00 ,  B01D71/06 ,  B01D71/64 ,  C08J5/22

    CPC分类号： B01D53/228 ,  B01D67/0093 ,  B01D71/62 ,  B01D2323/08

    摘要： The present invention discloses a novel method to improve the selectivities of polybenzoxazole (PBO) membranes prepared from aromatic polyimide 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： 本发明公开了一种提高由芳族聚酰亚胺膜制备的用于气体，蒸汽和液体分离的聚苯并恶唑（PBO）膜的选择性的新方法。 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％。