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公开(公告)号:US08415265B2
公开(公告)日:2013-04-09
申请号:US12664426
申请日:2008-05-21
申请人: Christian Kuhrs , Andreas Kern , Tilo John , Wolfgang Steiner , Heiko Maas
发明人: Christian Kuhrs , Andreas Kern , Tilo John , Wolfgang Steiner , Heiko Maas
IPC分类号: B01J29/06 , C07D251/12 , C07D251/60 , C07D251/62
CPC分类号: C07D251/60
摘要: A process for the preparation of melamine by decomposition of urea with the use of a catalyst, the catalyst comprising a) 10-90% by weight of zeolite, b) 10-90% by weight of a matrix comprising silica, alumina, silicon aluminum oxides and/or clay minerals, and c) 0-10% by weight of additives and the total content of nickel and vanadium in the catalyst being less than 500 ppm.
摘要翻译: 一种通过使用催化剂分解尿素来制备三聚氰胺的方法,所述催化剂包含a)10-90重量%的沸石,b)10-90重量%的包含二氧化硅,氧化铝,硅铝的基体 氧化物和/或粘土矿物,和c)0-10重量%的添加剂,催化剂中镍和钒的总含量小于500ppm。
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公开(公告)号:US20100222582A1
公开(公告)日:2010-09-02
申请号:US12738049
申请日:2008-10-14
申请人: Andreas Kern , Hans-Ulrich Pröbstle , Tilo John , Wolfgang Steiner , Heiko Maas
发明人: Andreas Kern , Hans-Ulrich Pröbstle , Tilo John , Wolfgang Steiner , Heiko Maas
IPC分类号: C07D251/60
CPC分类号: C07D251/60 , C07D251/62
摘要: Process for preparing melamine by converting urea in the presence of a solid catalyst in one reactor or in a plurality of reactors connected in series in the temperature range from 370° C. to 430° C., cooling and filtering the gas formed in the urea conversion, removing the melamine by desublimation and recycling a portion of the gas present after the melamine removal (“cycle gas”) into the reactor or the reactors, which comprises performing all of the above stages at a pressure in the range from 4 bar abs. to 10 bar abs.
摘要翻译: 在固体催化剂存在下,通过在一个反应器或多个在370℃至430℃的温度范围内串联连接的多个反应器的反应器中转化尿素来制备三聚氰胺的方法,冷却和过滤形成在尿素中的气体 将三聚氰胺除去(“循环气体”)之后存在的气体的一部分进入反应器或反应器,从而将三聚氰胺除去,并将其中的一部分再循环到反应器或反应器中,其中包括在4巴 。 至10巴绝对
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公开(公告)号:US20100184976A1
公开(公告)日:2010-07-22
申请号:US12664426
申请日:2008-05-21
申请人: Christian Kuhrs , Andreas Kern , Tilo John , Wolfgang Steiner , Heiko Maas
发明人: Christian Kuhrs , Andreas Kern , Tilo John , Wolfgang Steiner , Heiko Maas
IPC分类号: C07D251/06 , B01J29/072
CPC分类号: C07D251/60
摘要: A process for the preparation of melamine by decomposition of urea with the use of a catalyst, the catalyst comprising a) 10-90% by weight of zeolite, b) 10-90% by weight of a matrix comprising silica, alumina, silicon aluminum oxides and/or clay minerals, and c) 0-10% by weight of additives and the total content of nickel and vanadium in the catalyst being less than 500 ppm.
摘要翻译: 一种通过使用催化剂分解尿素来制备三聚氰胺的方法,所述催化剂包含a)10-90重量%的沸石,b)10-90重量%的包含二氧化硅,氧化铝,硅铝的基体 氧化物和/或粘土矿物,和c)0-10重量%的添加剂,催化剂中镍和钒的总含量小于500ppm。
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公开(公告)号:US20110137077A1
公开(公告)日:2011-06-09
申请号:US12674466
申请日:2008-08-18
申请人: Joaquim H. Teles , Steffen Oehlenschläger , Kai Gumlich , Martin Schäfer , Stephan Lamm , Stefan Berg , Michael Nilles , Hans-Peter Schildberg , Tilo John , Peter Zehner
发明人: Joaquim H. Teles , Steffen Oehlenschläger , Kai Gumlich , Martin Schäfer , Stephan Lamm , Stefan Berg , Michael Nilles , Hans-Peter Schildberg , Tilo John , Peter Zehner
IPC分类号: C07C51/235 , B01J8/04
CPC分类号: C07C51/235 , Y02P20/582 , C07C53/126 , C07C53/122
摘要: The invention relates to a process for oxidizing at least one organic substance with oxygen, which comprises the following steps: (a) adding the at least one organic substance as a liquid and an oxygenous gas stream to a first reaction stage to form a reaction mixture, at least some of the oxygen reacting with the organic compound to form a reaction product, (b) adding the reaction mixture from the first reaction stage to an adiabatically operated reaction stage in which the unconverted organic substance reacts further at least partly to give the product. The invention further relates to an apparatus for performing the process.
摘要翻译: 本发明涉及用氧氧化至少一种有机物质的方法,其包括以下步骤:(a)将至少一种有机物质作为液体和含氧气流加入到第一反应阶段以形成反应混合物 ,至少一些氧与有机化合物反应以形成反应产物,(b)将反应混合物从第一反应阶段加入至绝热操作的反应阶段,其中未转化的有机物质至少部分地进一步反应,得到 产品。 本发明还涉及一种用于执行该过程的装置。
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公开(公告)号:US08492584B2
公开(公告)日:2013-07-23
申请号:US12674466
申请日:2008-08-18
申请人: Joaquim Henrique Teles , Steffen Oehlenschläger , Kai Gumlich , Martin Schäfer , Stephan Lamm , Stefan Berg , Michael Nilles , Hans-Peter Schildberg , Tilo John , Peter Zehner
发明人: Joaquim Henrique Teles , Steffen Oehlenschläger , Kai Gumlich , Martin Schäfer , Stephan Lamm , Stefan Berg , Michael Nilles , Hans-Peter Schildberg , Tilo John , Peter Zehner
IPC分类号: C07C51/215
CPC分类号: C07C51/235 , Y02P20/582 , C07C53/126 , C07C53/122
摘要: The invention relates to a process for oxidizing at least one organic substance with oxygen, which comprises the following steps: (a) adding the at least one organic substance as a liquid and an oxygenous gas stream to a first reaction stage to form a reaction mixture, at least some of the oxygen reacting with the organic compound to form a reaction product, (b) adding the reaction mixture from the first reaction stage to an adiabatically operated reaction stage in which the unconverted organic substance reacts further at least partly to give the product. The invention further relates to an apparatus for performing the process.
摘要翻译: 本发明涉及用氧氧化至少一种有机物质的方法,其包括以下步骤:(a)将至少一种有机物质作为液体和含氧气流加入到第一反应阶段以形成反应混合物 ,至少一些氧与有机化合物反应以形成反应产物,(b)将反应混合物从第一反应阶段加入至绝热操作的反应阶段,其中未转化的有机物质至少部分地进一步反应,得到 产品。 本发明还涉及一种用于执行该过程的装置。
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公开(公告)号:US09598379B2
公开(公告)日:2017-03-21
申请号:US12738049
申请日:2008-10-14
申请人: Andreas Kern , Hans-Ulrich Pröbstle , Tilo John , Wolfgang Steiner , Heiko Maas
发明人: Andreas Kern , Hans-Ulrich Pröbstle , Tilo John , Wolfgang Steiner , Heiko Maas
IPC分类号: C07D251/60 , C07D251/62
CPC分类号: C07D251/60 , C07D251/62
摘要: Process for preparing melamine by converting urea in the presence of a solid catalyst in one reactor or in a plurality of reactors connected in series in the temperature range from 370° C. to 430° C., cooling and filtering the gas formed in the urea conversion, removing the melamine by desublimation and recycling a portion of the gas present after the melamine removal (“cycle gas”) into the reactor or the reactors, which comprises performing all of the above stages at a pressure in the range from 4 bar abs. to 10 bar abs.
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