公开(公告)号：US20100280195A1

公开(公告)日：2010-11-04

申请号：US12747742

申请日：2008-12-11

申请人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

发明人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

IPC分类号： C08G65/06 ,  C08F2/00

CPC分类号： C07D323/06 ,  C08G2/10

摘要： A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

摘要翻译： 从甲醇（1）开始，通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物（7）的方法，其中甲醇（1）在第一生产设备（A）中的第一反应器中被氧化，得到甲醛水溶液 （2），其被供给到其中获得纯三恶烷（6）并通过蒸馏除去低锅炉（5）的第二生产设备（B），并将纯三恶烷（6）进料至 第三生产厂（C），其中其被均聚或共聚以形成聚甲醛均聚物或共聚物（7），其中来自低锅炉除去塔（K 2）的低沸点物流（5）被再循环到进料流中， 提出了第一个生产厂（A）中的反应堆。

公开(公告)号：US08450507B2

公开(公告)日：2013-05-28

申请号：US12304223

申请日：2007-06-11

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Christoph Sigwart

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Christoph Sigwart

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/125

摘要： An integrated process for preparing trioxane from formaldehyde.

摘要翻译： 从甲醛制备三恶烷的综合方法。

公开(公告)号：US08350063B2

公开(公告)日：2013-01-08

申请号：US12682294

申请日：2008-09-22

申请人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

发明人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

IPC分类号： C07D323/06 ,  C07D45/00 ,  B01D3/10

CPC分类号： C07D323/06

摘要： A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which a) a feed stream I comprising formaldehyde as main component and trioxane and water as secondary components is provided, b) the feed stream I, a recycle stream V and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components are fed into a first distillation stage and distilled at a pressure of from 0.1 to 2.5 bar to give a stream II comprising formaldehyde as main component and water as secondary component and a stream III comprising trioxane as main component and water and formaldehyde as secondary components and a stream X comprising water, trioxane and formaldehyde, c) the stream III is, if appropriate after removal of low boilers from the stream III in a low boiler removal stage, distilled in a second distillation stage at a pressure of from 0.2 to 17.5 bar, with the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to give a stream IV consisting essentially of trioxane and the recycle stream V comprising trioxane as main component and water and formaldehyde as secondary components, c1) the stream IV is purified in at least one further trioxane distillation stage at a pressure at the top of from 0.5 to 2 bar to give purified trioxane as side offtake stream XII in the enrichment section of the column, d) the stream X and, if appropriate, a stream IX comprising water as main component are fed into a third distillation stage and distilled at a pressure of from 1 to 10 bar to give a stream VI consisting essentially of water and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components, is described.

摘要翻译： 提供了从包含甲醛，三恶烷和水的进料流I中分离三恶烷的方法，其中a）以甲醛为主要成分的进料流I和作为次要组分的三恶烷和水，b）进料流I，再循环流 V和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷进料到第一蒸馏阶段并在0.1至2.5巴的压力下蒸馏，得到包含甲醛作为主要成分的流II和作为次要的水 组分和包含三恶烷作为主要组分的流III和作为次要组分的水和甲醛，以及包含水，三恶烷和甲醛的流X，如果在低锅炉中从流III中除去低锅炉之后，则流III 去除阶段，在第二蒸馏阶段在0.2至17.5巴的压力下蒸馏，第二蒸馏阶段的压力为0.1 得到基本上由三恶烷组成的物流IV和包含三恶烷作为主要成分的再循环流V，以及作为次要组分的水和甲醛，c1）流IV至少纯化 在0.5至2巴的顶部的压力下进一步进一步三恶烷蒸馏阶段，以在柱的富集部分中提供作为侧馏出物流XII的纯化的三恶烷，d）流X和如果合适的话，将包含水的流IX 主要组分进料到第三蒸馏阶段并在1至10巴的压力下蒸馏，得到基本上由水组成的料流VI和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷。

公开(公告)号：US20100324311A1

公开(公告)日：2010-12-23

申请号：US12809338

申请日：2008-12-11

申请人： Markus Siegert ,  Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Christoph Sigwart

发明人： Markus Siegert ,  Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Christoph Sigwart

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/127

摘要： A process for preparing crude trioxane (1) having a concentration in the range from 50 to 75% by weight of trioxane by trimerization of formaldehyde from an aqueous formaldehyde solution (2) in the presence of an acid catalyst (3) and concentration of the trioxane from the reaction mixture from the trimerization by distillation, wherein the trimerization of the formaldehyde and the concentration of the trioxane from the reaction mixture from the trimerization are carried out in a single column (K) which is divided by a horizontal dividing plate (T) into a lower column region (A) and an upper column region (B), with the lower column region (A) and the upper column region (B) being connected by an external vapor line and an external liquid line, and a reactive distillation in which the formaldehyde is trimerized to trioxane and the trioxane in the reaction mixture is concentrated to the solubility limit of formaldehyde is carried out in the lower column region (A) at a pressure in the range from 1 to 5 bar and a distillation in which the trioxane is concentrated to give crude trioxane having a concentration in the range from 50 to 75% by weight is carried out in the upper column region (B) at a pressure in the range from 200 to 900 mbar, is proposed.

摘要翻译： 一种在酸催化剂（3）的存在下，通过甲醛从甲醛水溶液（2）中三聚化而制备浓度在50至75重量％范围内的三恶烷的粗三恶烷（1）的方法， 来自三聚的蒸馏反应混合物中的三恶烷，其中甲醛的三聚和来自三聚反应​​混合物的三恶烷的浓度在单塔（K）中进行，该柱由水平分隔板（T ）下部列区域（A）和上部列区域（B），其中下部列区域（A）和上部列区域（B）通过外部蒸汽管线和外部液体管线连接，并且反应性 将甲醛三聚为三恶烷并将反应混合物中的三恶烷浓缩至甲醛的溶解度极限的蒸馏，在下部塔区（A）中在压力下进行 nge为1至5巴，并且其中三恶烷浓缩以产生浓度为50至75重量％浓度的粗三恶烷的蒸馏在上部塔区（B）中以 建议200至900毫巴。

公开(公告)号：US08378144B2

公开(公告)日：2013-02-19

申请号：US12747742

申请日：2008-12-11

申请人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

发明人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

IPC分类号： C07C213/00

CPC分类号： C07D323/06 ,  C08G2/10

摘要： A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

摘要翻译： 从甲醇（1）开始，通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物（7）的方法，其中甲醇（1）在第一生产设备（A）中的第一反应器中被氧化，得到甲醛水溶液 （2），其被供给到其中获得纯三恶烷（6）并通过蒸馏除去低锅炉（5）的第二生产设备（B），并将纯三恶烷（6）进料至 第三生产厂（C），其中其被均聚或共聚以形成聚甲醛均聚物或共聚物（7），其中来自低锅炉除去塔（K 2）的低沸点物流（5）被再循环到进料流中， 提出了第一个生产厂（A）中的反应堆。

公开(公告)号：US20100270140A1

公开(公告)日：2010-10-28

申请号：US12682294

申请日：2008-09-22

申请人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

发明人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

IPC分类号： B01D3/10 ,  B01D3/36

CPC分类号： C07D323/06

摘要： A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which a) a feed stream I comprising formaldehyde as main component and trioxane and water as secondary components is provided, b) the feed stream I, a recycle stream V and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components are fed into a first distillation stage and distilled at a pressure of from 0.1 to 2.5 bar to give a stream II comprising formaldehyde as main component and water as secondary component and a stream III comprising trioxane as main component and water and formaldehyde as secondary components and a stream X comprising water, trioxane and formaldehyde, c) the stream III is, if appropriate after removal of low boilers from the stream III in a low boiler removal stage, distilled in a second distillation stage at a pressure of from 0.2 to 17.5 bar, with the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to give a stream IV consisting essentially of trioxane and the recycle stream V comprising trioxane as main component and water and formaldehyde as secondary components, c1) the stream IV is purified in at least one further trioxane distillation stage at a pressure at the top of from 0.5 to 2 bar to give purified trioxane as side offtake stream XII in the enrichment section of the column, d) the stream X and, if appropriate, a stream IX comprising water as main component are fed into a third distillation stage and distilled at a pressure of from 1 to 10 bar to give a stream VI consisting essentially of water and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components, is described.

摘要翻译： 提供了从包含甲醛，三恶烷和水的进料流I中分离三恶烷的方法，其中a）以甲醛为主要成分的进料流I和作为次要组分的三恶烷和水，b）进料流I，再循环流 V和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷进料到第一蒸馏阶段并在0.1至2.5巴的压力下蒸馏，得到包含甲醛作为主要成分的流II和作为次要的水 组分和包含三恶烷作为主要组分的流III和作为次要组分的水和甲醛，以及包含水，三恶烷和甲醛的流X，如果在低锅炉中从流III中除去低锅炉之后，则流III 去除阶段，在第二蒸馏阶段在0.2至17.5巴的压力下蒸馏，第二蒸馏阶段的压力为0.1 得到基本上由三恶烷组成的物流IV和包含三恶烷作为主要成分的再循环流V，以及作为次要组分的水和甲醛，c1）流IV至少纯化 在0.5至2巴的顶部的压力下进一步进一步三恶烷蒸馏阶段，以在柱的富集部分中提供作为侧馏出物流XII的纯化的三恶烷，d）流X和如果合适的话，将包含水的流IX 主要组分进料到第三蒸馏阶段并在1至10巴的压力下蒸馏，得到基本上由水组成的料流VI和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷。

公开(公告)号：US08372993B2

公开(公告)日：2013-02-12

申请号：US12523741

申请日：2008-01-23

申请人： Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Julia Kirschbaum ,  Markus Siegert

发明人： Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Julia Kirschbaum ,  Markus Siegert

IPC分类号： C07D309/00

CPC分类号： C07D323/06 ,  B01D3/146 ,  B01D3/148

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) feeding the use stream I, a recycle stream V and a recycle stream VII which comprises formaldehyde as the main component and water and trioxane as the secondary components into a first distillation stage and distilling to obtain a stream II a steam III and formaldehyde as the and a steam X c) distilling the stream III, in a second distillation stage 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 and the recycle stream V as the secondary components, d) feeding the stream X and if appropriate a stream IX into a third distillation stage and distilling at a pressure of from 1 to 10 bar to obtain a stream VI which consists substantially of water and a recycle stream VII which comprises formaldehyde as the main component and water and trioxane as the secondary components.

摘要翻译： a）从甲醛，三恶烷和水的使用流I中除去三恶烷的方法，通过a）提供包含甲醛作为主要成分的使用流I和作为次要组分的三恶烷和水，b）将使用流I， 循环流V和以甲醛为主要成分的再循环流VII和作为次要组分的水和三恶烷作为第二蒸馏步骤，并蒸馏以获得流II，蒸汽III和甲醛以及蒸汽X c）蒸馏 流III，在第二蒸馏阶段中，第二蒸馏阶段中的压力比第一蒸馏阶段中的压力高0.1至15巴，以获得流IV和再循环流V作为次要组分，d）将 流X并且如果合适的话，将流IX转化成第三蒸馏级并在1至10巴的压力下蒸馏以获得基本上由水和循环流 VII，其中甲醛为主要成分，水和三恶烷为次要成分。

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：US20090187033A1

公开(公告)日：2009-07-23

申请号：US12304223

申请日：2007-06-11

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Christophe Sigwart

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Christophe Sigwart

IPC分类号： C07D323/06

CPC分类号： C07D323/06 ,  Y02P20/125

摘要： An integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) feeding a feed stream A1 comprising formaldehyde and water and a recycle stream B3 comprising predominantly water and additionally formaldehyde and trioxane to a formaldehyde concentration unit and separating it into a formaldehyde-rich stream A2 and a stream A3 consisting essentially of water; b) feeding a product stream C1 comprising trioxane, water and formaldehyde, a recycle stream E1 comprising trioxane, water and formaldehyde, and, if appropriate, the stream A2 to a first low-pressure distillation column and distilling at a pressure of from 0.1 to 1.5 bar, and withdrawing a trioxane-enriched stream B comprising predominantly trioxane and additionally water and formaldehyde, a bottom draw stream B2 consisting essentially of formaldehyde and water, and the recycle stream B3 comprising predominantly water and additionally formaldehyde and trioxane as a side draw stream; c) feeding the bottom draw stream B2 and, if appropriate, the stream A2 to a trioxane synthesis reactor and allowing them to react to obtain the stream C1 comprising trioxane, water and formaldehyde; d) feeding the stream B1 to a medium-pressure distillation column and distilling at a pressure of from 1.0 to 3.0 bar to obtain a low boiler stream D1 comprising methanol, methylal and methyl formate, and a stream D2 comprising predominantly trioxane and additionally formaldehyde and water; e) feeding the stream D2 to a high-pressure distillation column and distilling at a pressure of from 2.5 to 10.0 bar to obtain the recycle stream E1 comprising trioxane, water and formaldehyde, and a product stream E2 consisting essentially of trioxane; the stream A2 being fed either to the low-pressure distillation column or to the trioxane synthesis reactor or to both.

摘要翻译： 一种用于从甲醛制备三恶烷的综合方法，包括以下步骤：a）将包含甲醛和水的进料流A1和主要包含水，再加甲醛和三恶烷的再循环流B3进料至甲醛浓缩装置，并将其分离成甲醛 - 富流A2和基本上由水组成的流A3; b）将包含三恶烷，水和甲醛的产物流C1，包含三恶烷，水和甲醛的循环流E1，以及如果合适的话，将流A2加入到第一低压蒸馏塔中，并在0.1至0.1的压力下蒸馏 包括主要为三恶烷，另外为水和甲醛的三恶烷富集流B，主要由甲醛和水组成的底部牵引流B2，主要包含水和另外的甲醛和三恶烷作为侧馏分流的再循环流B3 ; c）将底部牵引流B2和（如果合适的话）将料流A2加入到三恶烷合成反应器中并使其反应以获得包含三恶烷，水和甲醛的料流C1; d）将料流B1加入到中压蒸馏塔中并在1.0-3.0巴的压力下蒸馏，得到包含甲醇，甲缩醛和甲酸甲酯的低沸点物流D1，以及主要包含三恶烷和另外甲醛的物流D2，以及 水; e）将料流D2加入到高压蒸馏塔中并在2.5至10.0巴的压力下蒸馏以获得包含三恶烷，水和甲醛的再循环流E1和基本上由三恶烷组成的产物流E2; 流A2被供给至低压蒸馏塔或三恶烷合成反应器或两者。