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公开(公告)号：US20120289745A1
公开(公告)日：2012-11-15
申请号：US13521523
申请日：2011-01-10
申请人： Wolfgang Lorenz , Bernd Pennemann
发明人： Wolfgang Lorenz , Bernd Pennemann
IPC分类号： C07C209/00
CPC分类号： C07C209/36 , C07C211/51
摘要： The invention relates to a process for the preparation of aromatic amines in the liquid phase by catalytic hydrogenation of the corresponding nitroaromatic compounds in at least two reaction spaces connected in series, wherein at least one reaction space is operated isothermally and at least the reaction space connected downstream thereof is operated adiabatically, and in preferred embodiments the sudden adiabatic temperature change is used for monitoring the reaction.
摘要翻译： 本发明涉及通过在至少两个串联连接的反应空间中对相应的硝基芳族化合物进行催化氢化在液相中制备芳族胺的方法，其中至少一个反应空间是等温运行的，并且至少连接的反应空间 其下游绝热操作，在优选的实施方案中，突然的绝热温度变化用于监测反应。
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公开(公告)号：US08153838B2
公开(公告)日：2012-04-10
申请号：US12164716
申请日：2008-06-30
申请人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
发明人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C263/20 , C25B1/26 , C07C265/14
摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).
摘要翻译： 通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d） ，纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。
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公开(公告)号：US06332949B1
公开(公告)日：2001-12-25
申请号：US09269633
申请日：1999-03-30
IPC分类号： B01D100
CPC分类号： C01B17/88 , Y10S159/02 , Y10S159/16 , Y10S159/19
摘要： A process for concentrating spent sulphuric acids particularly sulphuric acids which arise during the nitration of hydrocarbons with nitric acid in the presence of sulphuric acid, wherein single- or multi-stage concentration is effected under vacuum.
摘要翻译： 一种用于在硫酸存在下用硝酸硝化烃中产生的废硫酸，特别是硫酸的方法，其中在真空下进行单级或多级浓缩。
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公开(公告)号：US09365503B2
公开(公告)日：2016-06-14
申请号：US12636925
申请日：2009-12-14
申请人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
发明人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Meta-toluene-diisocyanate is produced by reacting meta-toluenediamine with phosgene in the gas phase. The meta-toluenediamine to be vaporized for use in this phosgenation process must contain less than 0.5 wt. % of toluenediamine residue, a total of less than 0.2 wt. % of ammonia and cycloaliphatic amines, and less than 20 ppm of heavy metals. At least 0.1 wt. % of the liquid meta-toluenediamine being to be vaporized must not be vaporized. This non-vaporized content of the meta-toluenediamine must not be fed to the phosgenation reactor.
摘要翻译： 甲基 - 甲苯二异氰酸酯是通过间苯二甲胺与光气在气相中反应制得的。 要在该光气化过程中使用的待蒸发的间甲苯二胺必须含有小于0.5wt。 ％的甲苯二胺残留物，总计小于0.2wt。 ％的氨和脂环族胺，以及小于20ppm的重金属。 至少0.1wt。 待蒸发的液体间甲苯二胺的％不得蒸发。 间甲苯二胺的这种非汽化含量不得进料到光气化反应器中。
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公开(公告)号：US09051243B2
公开(公告)日：2015-06-09
申请号：US13383936
申请日：2010-07-06
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Isocyanates are produced by reacting a primary amine with phosgene in the gas phase. In this process, the amine is vaporized and then superheated prior to introduction into the reactor. The amine is superheated to a temperature at least 10° C. above dew point before entry into the reactor. A pressure difference between the vaporizer and entry into the reactor of from 1 to 500 mbar is maintained.
摘要翻译： 异氰酸酯是通过在气相中使伯胺与光气反应来制备的。 在该方法中，胺被蒸发，然后在引入反应器之前过热。 胺在进入反应器之前过热至高于露点至少10℃的温度。 蒸发器和进入反应器的压差保持在1至500毫巴之间。
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公开(公告)号：US20120108845A1
公开(公告)日：2012-05-03
申请号：US13383936
申请日：2010-07-06
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Isocyanates are produced by reacting a primary amine with phosgene in the gas phase. In this process, the amine is vaporized and then superheated prior to introduction into the reactor. The amine is superheated to a temperature at least 10° C. above dew point before entry into the reactor. A pressure difference between the vaporizer and entry into the reactor of from 1 to 500 mbar is maintained.
摘要翻译： 异氰酸酯是通过在气相中使伯胺与光气反应来制备的。 在该方法中，胺被蒸发，然后在引入反应器之前过热。 胺在进入反应器之前过热至高于露点至少10℃的温度。 蒸发器和进入反应器的压差保持在1至500毫巴之间。
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公开(公告)号：US08063241B2
公开(公告)日：2011-11-22
申请号：US12894290
申请日：2010-09-30
IPC分类号： C07C263/00 , C07C249/00
CPC分类号： C07C263/10 , C07C209/62 , C07C265/14 , C07C211/51
摘要： The present invention relates to a process for the preparation of toluene-diisocyanate. In this process, toluenediamine is reacted with phosgene to give crude toluene-diisocyanate, the crude toluene-diisocyanate is purified by distillation, the distillation residue formed during the distillation is hydrolysed at temperatures of less than 230° C. under absolute pressures of less than 30 bar, and the toluenediamine formed by this process is subsequently recycled into the reaction of toluenediamine and phosgene.
摘要翻译： 本发明涉及一种制备甲苯二异氰酸酯的方法。 在该方法中，甲苯二胺与光气反应得到粗甲苯二异氰酸酯，通过蒸馏纯化粗甲苯二异氰酸酯，蒸馏期间形成的蒸馏残余物在小于230℃的温度下在绝对压力小于 30巴，通过该方法形成的甲苯二胺随后再循环到甲苯二胺和光气的反应中。
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公开(公告)号：US20100160674A1
公开(公告)日：2010-06-24
申请号：US12636925
申请日：2009-12-14
申请人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
发明人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Meta-toluene-diisocyanate is produced by reacting meta-toluenediamine with phosgene in the gas phase. The meta-toluenediamine to be vaporized for use in this phosgenation process must contain less than 0.5 wt. % of toluenediamine residue, a total of less than 0.2 wt. % of ammonia and cycloaliphatic amines, and less than 20 ppm of heavy metals. At least 0.1 wt. % of the liquid meta-toluenediamine being to be vaporized must not be vaporized. This non-vaporized content of the meta-toluenediamine must not be fed to the phosgenation reactor.
摘要翻译： 甲基 - 甲苯二异氰酸酯是通过间苯二甲胺与光气在气相中反应制得的。 要在该光气化过程中使用的待蒸发的间甲苯二胺必须含有小于0.5wt。 ％的甲苯二胺残留物，总计小于0.2wt。 ％的氨和脂环族胺，以及小于20ppm的重金属。 至少0.1wt。 待蒸发的液体间甲苯二胺的％不得蒸发。 间甲苯二胺的这种非汽化含量不得进料到光气化反应器中。
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公开(公告)号：US07645900B2
公开(公告)日：2010-01-12
申请号：US12378508
申请日：2009-02-17
IPC分类号： C07C249/00
CPC分类号： C01B7/035 , C07C263/10 , C07C263/20 , C07C265/14 , C07C265/12
摘要： The present invention relates to a process for the preparation of isocyanates by reacting the appropriate amines with phosgene, condensing the gas mixture thereby obtained, stripping the liquid phase thereby obtained and returning the solvent so retained in liquid form to the reaction stage. The gaseous constituents are then purified further in an absorption process.
摘要翻译： 本发明涉及通过使适当的胺与光气反应制备异氰酸酯的方法，将由此得到的气体混合物冷凝，将由此获得的液相汽提，并使溶剂保持液态返回到反应阶段。 然后在吸收过程中进一步纯化气态成分。
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30.发明申请Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes 有权通过二硝基甲苯的催化氢化制备甲苯二胺的方法公开(公告)号：US20080146847A1
公开(公告)日：2008-06-19
申请号：US12001879
申请日：2007-12-13
申请人： Fritz Pohl , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Gerhard Wiechers
发明人： Fritz Pohl , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Gerhard Wiechers
IPC分类号： C07C209/36
CPC分类号： C07C209/36 , C07C211/50
摘要： The present invention relates to a process for the preparation of toluenediamine, in which dinitrotoluene is reacted with hydrogen in the presence of a catalyst. The dinitrotoluene required by this process has a content of carbon dioxide, in either physically dissolved or chemically bonded form, of not more than 0.175 mol %, based on the molar amount of the dinitrotoluene.
摘要翻译： 本发明涉及一种制备甲苯二胺的方法，其中二硝基甲苯与氢气在催化剂存在下反应。 该方法所需的二硝基甲苯的物理溶解或化学键合形式的二氧化碳含量以二硝基甲苯的摩尔量计不超过0.175mol％。
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