公开(公告)号：US20070293688A1

公开(公告)日：2007-12-20

申请号：US11660530

申请日：2005-08-18

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

IPC分类号： C07D323/06

CPC分类号： B01D3/146 ,  B01D3/141 ,  C07D323/06

摘要： The present invention relates to a process for distillatively removing pure trioxane from a feedstream (I) comprising trioxane in a proportion of at least 50% by weight, based on the total weight of the feedstream (I), and additionally formaldehyde and water, which comprises feeding the feedstream I and a further aqueous stream (II) which does not contain any components extraneous to the feedstream to a dividing wall column (TWK1) having a dividing wall TW which is arranged substantially perpendicularly and divides the column interior into a feed region (A1), a withdrawal reaction (B1), an upper combined column region (C1) and a lower combined column region (D1), and drawing off from the first dividing wall column (TWK1) a bottom stream (III) comprising pure trioxane and a sidestream (IV) at the withdrawal region (B1), comprising pure water.

摘要翻译： 本发明涉及一种从基于原料流（I）的总重量至少50重量％的比例的另外的甲醛和水的含有三恶烷的原料流（I）蒸馏除去纯三恶烷的方法，以及另外的甲醛和水 包括将进料流I和不含任何与进料流无关的任何组分的另外的水流（II）进料到具有基本上垂直布置的分隔壁TW的分隔壁塔（TWK 1），并将塔内部分成进料 区域（A 1），取出反应（B 1），上部组合塔区域（C 1）和下部混合塔区域（D 1），从第一分隔壁塔（TWK 1） （III），其包含纯三恶烷和在取出区（B1））的侧流（IV），其包含纯水。

公开(公告)号：US08530678B2

公开(公告)日：2013-09-10

申请号：US11665840

申请日：2005-10-20

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

IPC分类号： C07D323/06

CPC分类号： C07D323/06

摘要： Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

摘要翻译： 公开的方法包括：（a）在合适的催化剂存在下使甲醛水溶液在反应器中反应，得到包含三恶烷，甲醛和水的反应产物混合物; （b）蒸馏反应产物混合物以形成包含粗三恶烷的顶流; 和（c）在一个或多个附加阶段处理顶部流以形成纯三恶烷; 其中在蒸馏反应混合物期间抽出水分流。

公开(公告)号：US20070155972A1

公开(公告)日：2007-07-05

申请号：US10583696

申请日：2004-12-21

申请人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Michael Ott ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

发明人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Michael Ott ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

IPC分类号： C07D305/12 ,  C07C41/03

CPC分类号： C07D323/06 ,  B01D3/146 ,  B01D3/36 ,  Y02P20/127

摘要： A process for removing trioxane from a mixture I of formaldehyde, trioxane and water, by a) distilling the mixture I in a first distillation stage at a pressure of from 0.1 to 2 bar to obtain a stream II which comprises formaldehyde and a stream III which comprises predominantly trioxane and additionally water and formaldehyde, b) mixing the stream III with a recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde to obtain a stream IIIa which comprises predominantly trioxane and additionally water and formaldehyde, c) distilling the stream IIIa, if appropriate after removing low boilers from the stream III or IIIa in a further distillation stage, in a second distillation stage at a pressure of from 0.2 to 10 bar, the pressure in the second distillation stage being at least 0.1 bar higher than the pressure in the first distillation stage, to obtain a stream IV of trioxane and a stream V which comprises predominantly trioxane and additionally water and formaldehyde, d) distilling the stream V in a third distillation stage at a pressure of from 0.1 to 4 bar to obtain a stream VI which comprises predominantly water and additionally formaldehyde, and the recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde, e) if appropriate, distilling the stream VI in a fourth distillation stage to obtain a stream VIII which comprises predominantly water, and a stream IX which comprises predominantly formaldehyde.

摘要翻译： 一种从甲醛，三恶烷和水的混合物I中除去三恶烷的方法，通过以下步骤a）在0.1至2巴的压力下在第一蒸馏阶段中蒸馏混合物I以获得包含甲醛和流III的流II 主要包含三恶烷，另外还含有水和甲醛，b）将流III与主要包含三恶烷，另外含有水和甲醛的再循环流VII混合，得到主要含有三恶烷，另外含有水和甲醛的流IIIa，c）蒸馏流IIIa 如果适当，则在进一步蒸馏阶段从流III或IIIa除去低锅炉后，在0.2至10巴的压力的第二蒸馏阶段中，第二蒸馏阶段中的压力比压力高至少0.1巴 在第一蒸馏阶段，获得三恶烷的流IV和主要包含三恶烷并另外包含的流V 和d）在0.1至4巴的压力下在第三蒸馏阶段中蒸馏物流V以获得主要包含水和另外甲醛的物流VI，以及主要包含三恶烷和另外的水的再循环流VII，以及 甲醛，e）如果合适，在第四蒸馏阶段中蒸馏物流VI以获得主要包含水的物流VIII和主要包含甲醛的物流IX。

公开(公告)号：US20080281109A1

公开(公告)日：2008-11-13

申请号：US12063155

申请日：2006-08-01

申请人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

发明人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/125

摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde. Stream A2 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde. Stream B1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde. Stream C1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water.

摘要翻译： 本发明涉及从甲醛制备三恶烷的综合方法，其中在第一步中，将包含水和甲醛的料流A 1和基本上由水和甲醛组成的再循环料流B 2加入到三恶烷合成反应器中，其中 将甲醛转化成三恶烷，得到包含三恶烷，水和甲醛的产物流A 2。 将流A 2和包含三恶烷，水和甲醛的再循环流D 1加入到第一蒸馏塔中，并在0.1-2.5巴的压力下蒸馏，得到富含三恶烷的料流B 1，并且料流B 2 基本上由水和甲醛组成。 将料流B 1加入到第二蒸馏塔中，在0.2至17.5巴的压力下蒸馏，得到基本上由三恶烷组成的产物流C 2和包含三恶烷，水和甲醛的料流C 1。 将料流C 1加入到第三蒸馏塔中并在1至10巴的压力下进行蒸馏以获得包含三恶烷，水和甲醛的再循环流D 1和基本上由水组成的料流D 2。

公开(公告)号：US20070293689A1

公开(公告)日：2007-12-20

申请号：US11665840

申请日：2005-10-20

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

IPC分类号： C07D323/06

CPC分类号： C07D323/06

摘要： Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

摘要翻译： 公开的方法包括：（a）在合适的催化剂存在下使甲醛水溶液在反应器中反应，得到包含三恶烷，甲醛和水的反应产物混合物; （b）蒸馏反应产物混合物以形成包含粗三恶烷的顶流; 和（c）在一个或多个附加阶段处理顶部流以形成纯三恶烷; 其中在蒸馏反应混合物期间抽出水分流。

公开(公告)号：US20100152466A1

公开(公告)日：2010-06-17

申请号：US12063171

申请日：2006-08-04

申请人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Gruetzner ,  Sergej Blagov

发明人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Gruetzner ,  Sergej Blagov

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/125

摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde in which a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde; stream A2 is fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde; stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde; stream C1 is fed to a third distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water and formaldehyde.

摘要翻译： 本发明涉及从甲醛制备三恶烷的综合方法，其中将包含水和甲醛的流A1和基本上由水和甲醛组成的再循环流B2进料到三恶烷合成反应器中，其中甲醛被转化成三恶烷，以获得 产物流A2包含三恶烷，水和甲醛; 将料流A2加入到第一蒸馏塔中，并在0.1-2.5巴的压力下进行蒸馏，得到富含三恶烷的料流B1，基本上由水和甲醛组成的料流B2; 将料流B1和包含三恶烷，水和甲醛的再循环流D1进料至第二蒸馏塔，并在0.2至17.5巴的压力下蒸馏，得到基本上由三恶烷组成的产物流C2和包含三恶烷的料流C1 ，水和甲醛; 将料流C1进料至第三蒸馏塔并在0.1-2.5巴的压力下进行蒸馏以获得包含三恶烷，水和甲醛的再循环流D1和基本上由水和甲醛组成的料流D 2。

公开(公告)号：US20080194845A1

公开(公告)日：2008-08-14

申请号：US11997619

申请日：2006-07-19

申请人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

发明人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/125

摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor and allowed to react to obtain a product stream A2 comprising trioxane, water and formaldehyde; b) stream A2 is fed to a first low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane and additionally comprising water and formaldehyde, and the recycle stream B2 consisting substantially of formaldehyde and water; c) stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream C1 comprising predominantly trioxane and additionally formaldehyde and water, and a stream C2 consisting substantially of formaldehyde and water; d) stream C1 is fed to a high-pressure distillation column and distilled at a pressure of from 0.2 to 17.5 bar to obtain the recycle stream D1 and a product stream D2 consisting substantially of trioxane, in which a removal of the low boilers present in streams B1 or C1 may be undertaken between steps b) and c) or c) and d).

摘要翻译： 本发明涉及从甲醛制备三恶烷的综合方法，包括以下步骤：a）将包含水和甲醛的流A 1和基本上由水和甲醛组成的循环流B 2加入到三恶烷合成反应器中， 反应以获得包含三恶烷，水和甲醛的产物流A 2; b）将料流A 2加入到第一低压蒸馏塔中并在0.1至2.5巴的压力下蒸馏以获得富含三恶烷并另外包含水和甲醛的料流B 1，并且再循环料流B 2基本上 的甲醛和水; c）料流B 1和包含三恶烷，水和甲醛的再循环料流D 1进料到第二低压蒸馏塔中，并在0.1至2.5巴的压力下蒸馏以获得主要含有三恶烷和另外的甲醛的料流C 1 和水，以及基本上由甲醛和水组成的料流C 2; d）将料流C 1加入高压蒸馏塔中，并在0.2至17.5巴的压力下进行蒸馏，以获得基本上由三恶烷组成的再循环流D 1和产物流D 2，其中将低 在流B 1或C 1中存在的锅炉可以在步骤b）和c）或c）和d）之间进行。

公开(公告)号：US20070272540A1

公开(公告)日：2007-11-29

申请号：US10583698

申请日：2004-12-21

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

IPC分类号： B01D3/00 ,  C07D323/06

CPC分类号： C07D323/06

摘要： A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I which comprises formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII which comprises trioxane as the main component and formaldehyde and water as the secondary components to obtain a feed stream Ia which comprises formaldehyde as the main component and trioxane and water as the secondary components, c) distilling the use stream Ia in a first distillation stage at a pressure of from 0.1 to 2.5 bar to obtain a stream II which comprises formaldehyde as the main component and water as the secondary component, and a stream III which comprises trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III, optionally after removing low boilers from the stream III in a low boiler removal stage, in a second distillation stage at a pressure of from 0.2 to 17.5 bar, the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to obtain a stream IV which consists substantially of trioxane and a stream V which comprises trioxane as the main component and water and formaldehyde as the secondary components, e) optionally mixing the stream V with a stream IX which comprises water as the main component to obtain a stream Va having a higher water content than the stream V, the stream Va comprising trioxane as the main component and water and formaldehyde as the secondary components, f) distilling the stream V or Va in a third distillation stage at a pressure of from 1 to 10 bar to obtain a stream VI which consists substantially of water and the recycle stream VII which comprises trioxane as the main component and water and formaldehyde as the secondary components

公开(公告)号：US20080283384A1

公开(公告)日：2008-11-20

申请号：US12091976

申请日：2006-10-27

申请人： Neven Lang ,  Ralf Boehling ,  Achim Stammer ,  Jan Oldenburg ,  Markus Siegert ,  Eckhard Stroefer

发明人： Neven Lang ,  Ralf Boehling ,  Achim Stammer ,  Jan Oldenburg ,  Markus Siegert ,  Eckhard Stroefer

IPC分类号： C08G2/10 ,  B01D3/34 ,  C07D317/12 ,  C07D323/06

CPC分类号： C08G2/10 ,  C07D317/12 ,  C07D323/06 ,  C08G2/20 ,  Y02P20/127 ,  Y02P20/582

摘要： The invention relates to a process for preparing trioxane and at least one comonomer for preparing (co)polymers based on trioxane, in which, in a first step, formaldehyde the at least one comonomer reactant are reacted in aqueous solution to give trioxane and comonomer, to obtain a reaction mixture A1 comprising trioxane, comonomer, formaldehyde and water, with or without comonomer reactant. In a second step, the reaction mixture A1 is distilled in a first distillation stage at a first pressure to obtain a stream B1 enriched in trioxane and comonomer and a stream B2 comprising essentially water and formaldehyde, with or without comonomer reactant. In a third step, stream B1 is distilled in a second distillation stage at a pressure which is above the pressure of the first distillation stage to obtain a stream C1 comprising trioxane, comonomer and water and a product stream C2 consisting essentially of comonomer and trioxane.

摘要翻译： 本发明涉及一种制备三恶烷和至少一种共聚单体的方法，该共聚单体用于制备基于三恶烷的（共）聚合物，其中在第一步中，甲醛将至少一种共聚单体反应物在水溶液中反应得到三恶烷和共聚单体， 得到含有或不含共聚单体反应物的三恶烷，共聚单体，甲醛和水的反应混合物A 1。 在第二步中，将反应混合物A 1在第一压力下在第一蒸馏阶段进行蒸馏，以获得富含三恶烷和共聚单体的物流B 1和基本上含有水和甲醛的物流B 2，具有或不含共聚单体反应物。 在第三步骤中，在第二蒸馏阶段，在高于第一蒸馏阶段的压力的压力下蒸馏出料流B 1，以获得包含三恶烷，共聚单体和水的料流C 1和基本上由共聚单体组成的产物流C 2 和三恶烷。

公开(公告)号：US20080255376A1

公开(公告)日：2008-10-16

申请号：US12066093

申请日：2006-09-06

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer

IPC分类号： C07D317/12

CPC分类号： C07D317/12 ,  Y02P20/127

摘要： Processes comprising: providing a reactive distillation column having an upper region, a middle region and a lower region; feeding ethylene glycol and an aqueous formaldehyde solution into the reactive distillation column in the middle region of the reactive distillation column; reacting the ethylene glycol and the aqueous formaldehyde solution in the reactive distillation column in the presence of a catalyst to form dioxolane; removing a product stream comprising dioxolane in an amount of at least 75% by weight from the upper region of the reactive distillation column; and removing a bottom stream comprising one or more components having boiling points higher than dioxolane from the lower region of the reactive distillation column.

摘要翻译： 方法包括：提供具有上部区域，中间区域和下部区域的反应性蒸馏塔; 将乙二醇和甲醛水溶液进料到反应蒸馏塔的中间区域的反应蒸馏塔中; 在反应蒸馏塔中在催化剂存在下使乙二醇和甲醛水溶液反应形成二氧戊环; 从反应蒸馏塔的上部区域除去包含至少75重量％的二氧戊环的产物流; 并从反应蒸馏塔的下部区域除去包含沸点高于二氧戊环的一种或多种组分的底部物流。