公开(公告)号：US20100121081A1

公开(公告)日：2010-05-13

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： C07D323/06

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 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, and a stream X which comprises water, trioxane and formaldehyde, c) 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 the recycle stream V which comprises trioxane as the main component and water and formaldehyde as the secondary components, d) feeding the stream X and if appropriate a stream IX which comprises water as the main component 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，并在0.1至2.5巴的压力下蒸馏以获得包含甲醛作为主要的流II 组分和水作为次要组分，以及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，c）蒸馏流III，任选地在除去 在低锅炉去除阶段来自流III的低锅炉，在0.2至17.5巴的压力的第二蒸馏阶段中，第二蒸馏中的压力 酸化阶段比第一蒸馏阶段的压力高0.1至15巴，以获得基本上由三恶烷组成的料流IV和包含三恶烷作为主要成分的再循环流V，水和甲醛作为次要组分，d ），并且如果合适的话，将包含水作为主要成分的物流IX进料到第三蒸馏阶段并在1至10巴的压力下蒸馏以获得基本上由水和循环流VII组成的物流VI， 以甲醛为主要成分，水和三恶烷为次要成分。

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：US20070142677A1

公开(公告)日：2007-06-21

申请号：US10581986

申请日：2004-12-23

申请人： Gerhard Olbert ,  Thorsten Johann ,  Markus Weber ,  Neven Lang ,  Eckhard Stroefer ,  Martin Fiene ,  Markus Siegert

发明人： Gerhard Olbert ,  Thorsten Johann ,  Markus Weber ,  Neven Lang ,  Eckhard Stroefer ,  Martin Fiene ,  Markus Siegert

IPC分类号： C07C45/29

CPC分类号： F28D9/0031 ,  B01J8/0214 ,  B01J8/0285 ,  B01J8/0415 ,  B01J8/0419 ,  B01J8/0496 ,  B01J19/249 ,  B01J2208/0015 ,  B01J2208/00513 ,  B01J2208/025 ,  B01J2219/1923 ,  B01J2219/2453 ,  B01J2219/2455 ,  B01J2219/2458 ,  B01J2219/2459 ,  B01J2219/2462 ,  B01J2219/2481 ,  B01J2219/2485 ,  C07C45/38 ,  F28F2250/104 ,  C07C47/04

摘要： A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

摘要翻译： 一种通过在包含铁和钼的固定床催化剂存在下，通过包含分子氧的气流将甲醇蒸汽气相氧化制备甲醛的方法，其中该方法在具有热量的反应器（1）中进行 - 交换板（2），其沿反应器（1）的纵向布置并且在它们之间具有间隔，传热介质流过该间隔，用于传热介质的入口和出口设备（3,4） 描述了存在固定床催化剂的热交换板（2）之间的热交换板（2）和间隙（5），其中甲醇蒸气和包含分子氧的气流通过其中。

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：US07754900B2

公开(公告)日：2010-07-13

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。

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：US20060185513A1

公开(公告)日：2006-08-24

申请号：US10547440

申请日：2004-03-03

申请人： Eckhard Stroefer ,  Neven Lang ,  Ulrich Steinbrenner ,  Hans Hasse ,  Thomas Grutzner

发明人： Eckhard Stroefer ,  Neven Lang ,  Ulrich Steinbrenner ,  Hans Hasse ,  Thomas Grutzner

IPC分类号： B01D19/00

CPC分类号： C07C45/002 ,  C07C45/82 ,  C07C47/04

摘要： Process for preparing high-concentration gaseous formaldehyde having a molar CH2O:H2O ratio of ≧0.6 from an aqueous formaldehyde solution by evaporation of at least part of the solution, in which the aqueous formaldehyde solution is heated to a vaporization temperature T and the gas phase formed is taken off, wherein the evaporation temperature T obeys the relationship: T[° C.]≧T′min[° C.] where T′min(c)=A+B×(c/100)+C×(c/100)2+D×(c/100)3 and A=+68.759, B=+124.77, C=−12.851, D=−10.095, where c is the instantaneous CH2O content of the aqueous formaldehyde solution during the evaporation in percent by weight and is from 20 to 99% by weight.

摘要翻译： 从甲醛水溶液中制备具有摩尔CH 2 H 2 O:H 2 O 2比值> 0.6的高浓度气态甲醛的方法，通过蒸发至少部分 溶液，其中将甲醛水溶液加热至蒸发温度T，取出形成的气相，其中蒸发温度T遵循以下关系：<？in-line-formula description =“In-line formula”end = “lead”？> T [°C]> = T'分钟<°C。<？in-line-formula description =“In-line Formulas”end =“tail”？> 其中T'分钟（c）= A + Bx（c / 100）+ Cx（c / 100）2 + Dx（c / 100） / SUP>和A = + 68.759，B = + 124.77，C = -12.851，D = -10.095，其中c是蒸发期间甲醛水溶液的瞬时CH 2 O 2含量百分比 为20〜99重量％。