利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

66 条记录 (耗时 0.042 秒)

    Breaking down aromatic compounds in industrial wastewaters
    2.
    发明授权
    Breaking down aromatic compounds in industrial wastewaters 有权
    打破工业废水中的芳香族化合物

    公开(公告)号：US06258281B1

    公开(公告)日：2001-07-10

    申请号：US09336722

    申请日：1999-06-21

    申请人： Edmund Niedbalski ,  Laurance Thurman ,  Irene Troetsch-Schaller ,  Ludwig Schuster ,  Dieter Voges ,  Peter Zehner ,  Klaus Bittins ,  Rudolf Schnur

    发明人： Edmund Niedbalski ,  Laurance Thurman ,  Irene Troetsch-Schaller ,  Ludwig Schuster ,  Dieter Voges ,  Peter Zehner ,  Klaus Bittins ,  Rudolf Schnur

    IPC分类号： C02F178

    CPC分类号： C02F1/78 ,  Y10S210/909

    摘要： A process for breaking down aromatics in industrial wastewaters that contain small amounts of aromatics by reaction with an ozone-containing oxygen stream at a temperature of from 40 to 70° C. and at a pH of from 4 to 7, involves treating industrial wastewaters that contain small amounts of aromatics in two stages with an oxygen stream that contains from 5 to 8% by volume of ozone with thorough mixing by causing the wastewater to flow upward through two reaction zones, the overflow of the wastewater at the top of the first reaction zone entering the second reaction zone at the base, the purified wastewater being obtained at the top of the second reaction zone, the ozone-containing oxygen stream first entering at the base of the second reaction zone, and the waste gas obtained at the top of the second reactor being introduced at the base of the first reaction zone, and, furthermore, a gas containing less than 0.2% by volume of ozone being obtained at the top of the first reaction zone.

    摘要翻译： 在-40〜70℃，pH4〜7的温度下，通过与含臭氧的氧气流反应而含有少量芳族化合物的工业废水中的芳族化合物的分解方法涉及处理工业废水， 在两个阶段中含有少量芳烃，其中含有5-8％（体积）臭氧的氧气，通过使废水通过两个反应区向上流动而充分混合，第一反应顶部的废水溢出 进入第二反应区的第二反应区的第二反应区的第二反应区的净化废水，在第二反应区的顶部得到的纯化废水，首先进入第二反应区的碱的含臭氧的氧流， 第二反应器被引入第一反应区的底部，此外，在第一反应区的顶部获得含有小于0.2体积％的臭氧的气体。

    Continuous hydroformylation of olefinically unsaturated compounds
    3.
    发明授权
    Continuous hydroformylation of olefinically unsaturated compounds 失效
    烯属不饱和化合物的连续加氢甲酰化

    公开(公告)号：US4778929A

    公开(公告)日：1988-10-18

    申请号：US70963

    申请日：1987-07-08

    申请人： Peter Zehner ,  Herwig Hoffmann ,  Wolfgang Richter ,  Dieter Stuetzer ,  Max Strohmeyer ,  Helmut Walz ,  Erich Weippert

    发明人： Peter Zehner ,  Herwig Hoffmann ,  Wolfgang Richter ,  Dieter Stuetzer ,  Max Strohmeyer ,  Helmut Walz ,  Erich Weippert

    IPC分类号： C07B61/00 ,  B01J31/00 ,  C07C45/00 ,  C07C45/50 ,  C07C47/02 ,  C07C67/00

    CPC分类号： C07C45/50

    摘要： Olefinically unsaturated compounds are hydroformylated continuously, the olefin being passed into the lower region of the reactor, under from 1 to 40 bar and at from 50.degree. to 140.degree. C. with the aid of a rhodium complex as a catalyst in a hydroformylation reactor having a liquid reaction zone which occupies about 60-85% of the reactor volume, the gaseous products and reactants being removed from the hydroformylation reactor, the products being isolated and the major part of the remaining gas being recycled to the reactor by the cycle gas method, by a process in which from 20 to 80% by volume of the cycle gas is fed into the hydroformylation reactor above the liquid reaction zone and/or below the liquid surface in the top fourth of the liquid reaction zone.

    摘要翻译： 烯化不饱和化合物连续加氢甲酰化，在加氢甲酰化反应器中借助于铑络合物作为催化剂，将烯烃在1至40巴和50至140℃下进入反应器的下部区域， 占反应器体积约60-85％的液体反应区，气态产物和反应物从加氢甲酰化反应器中除去，产物被分离，剩余气体的主要部分通过循环气体法再循环到反应器 ，其中循环气体的20至80体积％被输入到液体反应区上方的加氢甲酰化反应器和/或液体反应区顶部第四个液体表面下方的流程。

    PROCESS FOR PREPARING ISOCYANATES
    5.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES 有权
    制备异氰酸酯的方法

    公开(公告)号：US20120172621A1

    公开(公告)日：2012-07-05

    申请号：US13394647

    申请日：2010-09-09

    申请人： Torsten Mattke ,  Matthias Kloetzer ,  Eckhard Stroefer ,  Bernhard Geissler ,  Peter Zehner

    发明人： Torsten Mattke ,  Matthias Kloetzer ,  Eckhard Stroefer ,  Bernhard Geissler ,  Peter Zehner

    IPC分类号： C07C263/06

    CPC分类号： C07C263/04 ,  C07C263/06 ,  C07C265/14

    摘要： The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic polyamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric polyurethanes and thermal dissociation of the latter, in which the polyisocyanates produced and unusable residues are separated off at particular stages of the reaction and reusable by-products and intermediates are recirculated to preceding stages.

    摘要翻译： 本发明涉及通过相应的有机多胺与碳酸衍生物和醇的反应连续制备有机，可蒸馏的多异氰酸酯，优选二异氰酸酯，特别优选脂族或脂环族二异氰酸酯的多级方法，以形成低分子量单体聚氨酯和热解离 其中多异氰酸酯产生和不可用的残余物在反应的特定阶段被分离，并且可重复使用的副产物和中间体再循环到前面的阶段。

    Hydroformylation
    9.
    发明授权
    Hydroformylation 有权
    加氢甲酰化

    公开(公告)号：US07351384B2

    公开(公告)日：2008-04-01

    申请号：US11218532

    申请日：2005-09-06

    申请人： Peter Zehner ,  Michael Nilles

    发明人： Peter Zehner ,  Michael Nilles

    IPC分类号： B01J10/00 ,  B01J19/00

    CPC分类号： C07C45/50 ,  B01J19/006 ,  B01J19/2435 ,  B01J19/246 ,  B01J2219/00033 ,  B01J2219/00083 ,  B01J2219/00108 ,  B01J2219/0011 ,  B01J2219/00182 ,  B01J2219/00777 ,  C07C47/12

    摘要： Olefins having at least 6 carbon atoms are bydroformylated in the presence of a homogenous catalyst in a continuous process in which a) a vertical tall cylindrical reactor (1) whose interior space is divided by means of internals (2). into at least two reaction chambers which extend essentially in the longitudinal direction of the reactor is used, b) at least one olefin is introduced into the reactor together with synthesis gas at the lower end of the first reaction chamber, c) a partially reacted reaction mixture is conveyed from the upper end of a reaction chamber to the lower end of a next reaction chamber; and d) the hydroformylated olefin is taken off at the upper end of the last reaction chamber. The process allows a high conversion at a given reactor volume.

    摘要翻译： 具有至少6个碳原子的烯烃在连续过程中在均匀催化剂存在下加氢甲酰化，其中a）垂直的高柱形反应器（1），其内部空间通过内件（2）分成至少两个反应室 使用基本上在反应器的纵向延伸的方法，b）至少一种烯烃与第一反应室下端的合成气一起引入反应器，c）部分反应的反应混合物从上部 反应室的末端到下一个反应室的下端; 和d）加氢甲酰化烯烃在最后反应室的上端取出。 该方法允许在给定反应器体积下的高转化率。

    Method for producing oligomers
    10.
    发明授权
    Method for producing oligomers 失效
    生产低聚物的方法

    公开(公告)号：US06852898B2

    公开(公告)日：2005-02-08

    申请号：US10221168

    申请日：2001-03-22

    申请人： Ralf Schulz ,  Thomas Heidemann ,  Peter Schwab ,  Peter Zehner

    发明人： Ralf Schulz ,  Thomas Heidemann ,  Peter Schwab ,  Peter Zehner

    IPC分类号： B01J19/24 ,  C07B61/00 ,  C07C2/08 ,  C07C2/10 ,  C07C2/24 ,  C07C11/02 ,  C07C2/06

    CPC分类号： C07C2/10 ,  B01J19/2465 ,  C07C2/08

    摘要： In a process for preparing essentially unbranched oligomers of alkenes having from 4 to 6 carbon atoms starting from the alkenes or a hydrocarbon stream comprising such alkenes over a nickel-containing heterogeneous catalyst in an adiabatically operated reactor at from 20 to 300° C. and pressures of from 1 to 100 bar, a first substream of the output from the reactor is worked up to isolate the oligomers and the second substream is recirculated together with fresh alkene or a fresh hydrocarbon stream comprising such alkenes to the reactor.

    摘要翻译： 在从20-300℃绝热操作的反应器中，在烯烃或含有这种烯烃的含烃非均相催化剂的基础上制备基本上未分支的具有4-6个碳原子的烯烃低聚物的方法， 1至100巴，将来自反应器的输出的第一子流排除以分离低聚物，并将第二子流与新鲜的烯烃或包含这种烯烃的新鲜烃物流一起再循环到反应器中。