发明公开
- 专利标题： ÜBERWACHUNG DES STÖCHIOMETRISCHEN VERHÄLTNISSES BEI DER UMSETZUNG VON NITROAROMATEN MIT WASSERSTOFF
- 专利标题（英）： Monitoring the stoichiometric ratio during the reaction of nitroaromatics with hydrogen
- 专利标题（中）： 监测的化学计量比在氢气硝基芳烃的执行情况
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申请号： EP13702651.4申请日： 2013-02-07
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公开(公告)号： EP2812308A1公开(公告)日： 2014-12-17
- 发明人: RAICHLE, Andreas , HAASE, Stefanie , BRAUNSBERG, Holgar , BÜTTNER, Johannes , PENZEL, Ulrich , NETO, Samuel
- 申请人： BASF SE
- 申请人地址： 67056 Ludwigshafen DE
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： 67056 Ludwigshafen DE
- 代理机构： Steinbusch, Daniel
- 优先权： EP12154211 20120207
- 国际公布： WO2013117622 20130815
- 主分类号： C07C209/36
- IPC分类号： C07C209/36
摘要：
The present invention relates to a continuous method for producing at least one aromatic amine by hydrogenation of at least one nitroaromatic with hydrogen, wherein a liquid phase containing at least the aromatic amine and a gaseous phase containing at least hydrogen are present, in the presence of a catalyst suspended in the liquid phase, at a temperature of 50-250°C and a pressure of 5-0 bar. The pressure in the reactor is held substantially constant by continuously adjusting the quantity of hydrogen supplied to the reactor, the total amount of hydrogen supplied to the reactor is monitored and the supply of the at least one nitroaromatic is interrupted if the hydrogen uptake of the reactor does not amount to at least 50 mol% of the hydrogen quantity required for stoichiometric reaction of the at least one nitroaromatic to form the at least one aromatic amine.
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