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    Method for the production of chlorine
    3.
    发明申请
    Method for the production of chlorine 审中-公开
    生产氯的方法

    公开(公告)号：US20060263290A1

    公开(公告)日：2006-11-23

    申请号：US10567579

    申请日：2004-08-06

    申请人： Christian Walsdorff ,  Martin Fiene ,  Martin Sesing ,  Olga Metelkina ,  Lothar Seidemann ,  Eckhard Stroefer ,  Klaus Harth

    发明人： Christian Walsdorff ,  Martin Fiene ,  Martin Sesing ,  Olga Metelkina ,  Lothar Seidemann ,  Eckhard Stroefer ,  Klaus Harth

    IPC分类号： C01B7/00

    CPC分类号： C01B7/04 ,  Y02P20/228

    摘要： The invention relates to a process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride, which comprises the steps: a) providing a feed gas stream I comprising hydrogen chloride and a feed gas stream II comprising oxygen; b) in a first oxidation stage, feeding the feed gas stream I, the feed gas stream II, if desired a recycle stream la comprising hydrogen chloride and if desired an oxygen-containing recycle stream IIa into a first oxidation zone and bringing them into contact with a first oxidation catalyst so that a first partial amount of the hydrogen chloride is oxidized to chlorine and a gas stream III comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor is obtained; c) in a second oxidation stage, feeding the gas stream III into a second oxidation zone and bringing it into contact with at least one further oxidation catalyst so that a second partial amount of the hydrogen chloride is oxidized to chlorine and a product gas stream IV comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor is obtained; d) isolating chloride, if desired the recycle stream Ia and if desired the recycle stream IIa from the product gas stream IV, wherein the first oxidization catalyst in the first oxidation zone is present in a fluidized bed and the further oxidation catalyst or catalysts in the second oxidation zone is/are present in a fixed bed.

    摘要翻译： 本发明涉及通过氯化氢的催化气相氧化制备氯的方法，其包括以下步骤：a）提供包含氯化氢的进料气流I和包含氧的进料气流II; b）在第一氧化阶段，如果需要，将进料气流I，进料气流II进料到包含氯化氢的再循环流1a，并且如果需要，将含氧循环流IIa进入第一氧化区并使其接触 用第一氧化催化剂使得第一部分氯化氢被氧化成氯，得到包含氯，未反应的氧，未反应的氯化氢和水蒸气的气流III; c）在第二氧化阶段，将气流III进料到第二氧化区并使其与至少一种其它氧化催化剂接触，使得第二部分量的氯化氢被氧化成氯，产物气流IV 包括氯，未反应的氧，未反应的氯化氢和水蒸气; d）如果需要，根据需要从产物气流IV中分离氯化物，如果需要，再循环流Ia，如果需要，再循环流IIa，其中第一氧化区中的第一氧化催化剂存在于流化床中， 第二氧化区存在于固定床中。

    PROCESS FOR PREPARING ISOCYANATES
    7.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES 有权
    制备异氰酸酯的方法

    公开(公告)号：US20110124908A1

    公开(公告)日：2011-05-26

    申请号：US12675095

    申请日：2008-08-27

    申请人： Bernd Rumpf ,  Michael Bock ,  Martin Fiene ,  Eckhard Stroefer

    发明人： Bernd Rumpf ,  Michael Bock ,  Martin Fiene ,  Eckhard Stroefer

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C07C263/20 ,  C07C265/14

    摘要： The invention provides a process for preparing polyisocyanates, comprising the steps of a) reacting amines with phosgene, b) removing hydrogen chloride, excess phosgene and, if appropriate, the solvent from the reaction mixture, c) separating the liquid mixture from step b) into a liquid phase and a gaseous phase, d) working up the gaseous phase from step c) to give the polyisocyanate.

    摘要翻译： 本发明提供了一种制备多异氰酸酯的方法，包括以下步骤：a）使胺与光气反应，b）从反应混合物中除去氯化氢，过量的光气和（如果合适的话）溶剂; c）将液体混合物从步骤b） 进入液相和气相，d）处理来自步骤c）的气相，得到多异氰酸酯。