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    METHOD FOR STARTING A GAS PHASE OXIDATION REACTOR THAT CONTAINS A CATALYTICALLY ACTIVE SILVER-VANADIUM OXIDE BRONZE
    16.
    发明申请
    METHOD FOR STARTING A GAS PHASE OXIDATION REACTOR THAT CONTAINS A CATALYTICALLY ACTIVE SILVER-VANADIUM OXIDE BRONZE 审中-公开
    启动含有催化活性银 - 氧化钒的气相氧化反应器的方法

    公开(公告)号：US20110028740A1

    公开(公告)日：2011-02-03

    申请号：US12936648

    申请日：2009-04-07

    申请人： Cornelia Dobner ,  Ulf Dietrich ,  Thomas Mackewitz ,  Sebastian Storck ,  Hagen Wilmer ,  Frank Rosowski ,  Andreas Tenten

    发明人： Cornelia Dobner ,  Ulf Dietrich ,  Thomas Mackewitz ,  Sebastian Storck ,  Hagen Wilmer ,  Frank Rosowski ,  Andreas Tenten

    IPC分类号： C07D307/89 ,  C07D307/36 ,  C07C51/347 ,  C07C63/00 ,  C07C63/04

    CPC分类号： C07C51/265 ,  C07C63/16

    摘要： What is described is a method for starting a gas phase oxidation reactor that contains a bed of a first catalyst whose active material comprises a catalytically active silver-vanadium oxide bronze, and at least one bed of a second catalyst whose catalytically active material comprises vanadium pentoxide and titanium dioxide, and whose temperature is controllable by means of a heat transfer medium. In the operating state, a gas stream which comprises a loading cop of a hydrocarbon and molecular oxygen is passed through the reactor over the bed of the first and second catalyst at a temperature Top of the heat transfer medium. For the startup, a) a gas stream is passed through the reactor with a starting loading c0 which is less than cop, and at a starting temperature T0 of the heat transfer medium which is less than Top, and b) the temperature of the heat transfer medium is brought to Top and the loading of the gas stream to cop. The process combines a short startup time without exceedance of emissions or quality requirements, long catalyst lifetime, high yield and low formation of by-products.

    摘要翻译： 描述的是一种起始气相氧化反应器的方法，该反应器含有一种第一催化剂床，其活性物质包含催化活性的银 - 钒氧化物青铜，以及至少一个第二催化剂床，其催化活性物质包含五氧化二钒 和二氧化钛，其温度可通过传热介质控制。 在操作状态下，在传热介质的温度Top下，将包含烃和分子氧的负载管的气流在第一和第二催化剂的床上通过反应器。 对于启动，a）气流通过反应器，起动负载c0小于保护时间，并且传热介质的起始温度T0小于Top，b）热量的温度 转移介质被带到顶部并将气流装载到管路中。 该过程结合了启动时间短，而不会超过排放或质量要求，长催化剂寿命，高产率和低副产物形成。

    METHOD FOR STARTING A GAS-PHASE OXIDATION REACTOR
    20.
    发明申请
    METHOD FOR STARTING A GAS-PHASE OXIDATION REACTOR 有权
    启动气相氧化反应器的方法

    公开(公告)号：US20110034707A1

    公开(公告)日：2011-02-10

    申请号：US12936807

    申请日：2009-04-07

    申请人： Hagen Wilmer ,  Zürgen Zühike ,  Thomas Lautensack ,  Hans-Martin Allmann ,  Frank Rosowski ,  Cornelia Katharina Dobner

    发明人： Hagen Wilmer ,  Zürgen Zühike ,  Thomas Lautensack ,  Hans-Martin Allmann ,  Frank Rosowski ,  Cornelia Katharina Dobner

    IPC分类号： C07D307/89

    CPC分类号： C07C51/265 ,  C07D307/89

    摘要： What is described is a process for starting up a gas phase oxidation reactor for oxidation of o-xylene to phthalic anhydride, said reactor comprising at least one catalyst layer and being temperature-controllable by means of a heat carrier medium, wherein a) the catalyst layer is interrupted by a moderator layer which is less catalytically active than the catalyst layer or is catalytically inactive, b) a gas stream is passed through the reactor with an initial loading of o-xylene and at an initial temperature of the heat transfer medium, c) the loading of the gas stream is increased to a target loading and, in parallel, the temperature of the heat transfer medium is lowered to an operating temperature. The introduction of the moderator layer allows the loading to be increased more rapidly and the startup time to be shortened.

    摘要翻译： 描述的是用于启动用于将邻二甲苯氧化成邻苯二甲酸酐的气相氧化反应器的方法，所述反应器包括至少一个催化剂层，并且可通过热载体介质温度控制，其中a）催化剂 层被催化剂层催化活性较低或催化无活性的中间体层中断，b）气流以邻二甲苯的初始负荷和传热介质的初始温度通过反应器， c）将气流的负载增加到目标负载，并且并联地将传热介质的温度降低到工作温度。 调节器层的引入允许加载更快速并且启动时间被缩短。