公开(公告)号：US07381851B2

公开(公告)日：2008-06-03

申请号：US10581986

申请日：2004-12-23

Applicant: Gerhard Olbert ,  Thorsten Johann ,  Markus Weber ,  Neven Lang ,  Eckhard Ströfer ,  Martin Fiene ,  Markus Siegert

Inventor： Gerhard Olbert ,  Thorsten Johann ,  Markus Weber ,  Neven Lang ,  Eckhard Ströfer ,  Martin Fiene ,  Markus Siegert

IPC: C07C45/29

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US07345207B2

公开(公告)日：2008-03-18

申请号：US10547732

申请日：2004-03-04

Applicant: Eckhard Stroefer ,  Neven Lang ,  Hans Hasse ,  Thomas Grützner ,  Michael Ott

Inventor： Eckhard Stroefer ,  Neven Lang ,  Hans Hasse ,  Thomas Grützner ,  Michael Ott

IPC: G07C45/78 ,  C08G8/04

CPC classification number: C07C45/002 ,  C07C45/82 ,  C07C47/04

Abstract: Process for preparing high-concentration formaldehyde solutions having a CH2O content of ≧50% by weight from an aqueous formaldehyde solution having a lower CH2O content by evaporation of part of this solution (partial evaporation), in which the aqueous formaldehyde solution is heated to an evaporation temperature T at which the gas phase becomes enriched in water relative to the liquid phase and the gas phase formed is taken off continuously or discontinuously, wherein the evaporation temperature T obeys the relationship: T[° C.]

Abstract translation: 通过蒸发具有较低CH 2 O 2含量的甲醛水溶液制备CH 2 O 2含量> 50重量％的高浓度甲醛溶液的方法 该部分溶液（部分蒸发），其中甲醛水溶液被加热到气相相对于液相富集水的蒸发温度T，形成的气相连续或不连续地取出，其中 蒸发温度T遵循以下关系：<？in-line-formula description =“In-line Formulas”end =“lead”？> T [°C。] <°C] <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？>其中T < （c）= A + Bx（c / 100）+ Cx（c / 100）2 + Dx（c / 100）3 < line-formula description =“In-line Formulas”end =“tail”？> A = + 68.759，B = + 124.77，C = -12.851，D = -10.095，其中c是瞬时CH 2， / 在蒸发期间甲醛水溶液的重量百分比为20〜99重量％。

公开(公告)号：US08372993B2

公开(公告)日：2013-02-12

申请号：US12523741

申请日：2008-01-23

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

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

IPC: C07D309/00

CPC classification number: C07D323/06 ,  B01D3/146 ,  B01D3/148

Abstract: 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.

Abstract translation: 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

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

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

IPC: C07D323/06

CPC classification number: B01D3/146 ,  B01D3/141 ,  C07D323/06

Abstract: 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.

Abstract translation: 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：US20070135660A1

公开(公告)日：2007-06-14

申请号：US10588662

申请日：2005-02-10

Applicant: Bernd Rumpf ,  Eckhard Stroefer ,  Ortmund Lang ,  Neven Lang

Inventor： Bernd Rumpf ,  Eckhard Stroefer ,  Ortmund Lang ,  Neven Lang

IPC: C07C45/00

CPC classification number: C07C45/82 ,  C07C47/04

Abstract: A process for preparing a high-concentration formaldehyde solution by removing water from a lower-concentration formaldehyde solution having a formaldehyde content of from 5 to 50% by weight, in which the lower-concentration formaldehyde solution is fed to a preheater and heated in the preheater, depressurized via a pressure maintenance device and concentrated in a helical tube evaporator to give a vapor stream and the high-concentration formaldehyde solution as bottom stream, wherein the heated lower-concentration formaldehyde hyde solution is depressurized in the pressure maintenance device to give a two-phase mixture which is fed into the helical tube evaporator, is proposed.

Abstract translation: 通过从甲醛含量为5〜50重量％的低浓度甲醛溶液中除去水而制备高浓度甲醛溶液的方法，其中将低浓度甲醛溶液加入到预热器中并在 预热器，通过压力维持装置减压，并浓缩在螺旋管蒸发器中，得到蒸气流，高浓度甲醛溶液作为底部流，其中加压的低浓度甲醛海藻溶液在压力维持装置中减压，得到 提出了进入螺旋管蒸发器的两相混合物。

公开(公告)号：US08378144B2

公开(公告)日：2013-02-19

申请号：US12747742

申请日：2008-12-11

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

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

IPC: C07C213/00

CPC classification number: C07D323/06 ,  C08G2/10

Abstract: 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.

Abstract translation: 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

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

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

IPC: B01D3/10 ,  B01D3/36

CPC classification number: C07D323/06

Abstract: 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.

Abstract translation: 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

Applicant: Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer

Inventor： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer

IPC: C07D317/12

CPC classification number: C07D317/12 ,  Y02P20/127

Abstract: 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.

Abstract translation: 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：US07713387B2

公开(公告)日：2010-05-11

申请号：US10583698

申请日：2004-12-21

Applicant: Markus Siegert ,  Neven Lang ,  Eckhard Ströfer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

Inventor： Markus Siegert ,  Neven Lang ,  Eckhard Ströfer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

IPC: B01D3/00 ,  C07D323/06 ,  C07C45/78

CPC classification number: C07D323/06

Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

Abstract translation: 一种从甲醛，三恶烷和水的使用流I中除去三恶烷的方法，通过以下步骤：a）提供以甲醛为主要成分的使用流I和作为第二组分的三恶烷和水，b）将使用流I与再循环 流VII以获得进料流Ia，c）在第一蒸馏阶段中蒸馏出使用流Ia以获得作为主要组分的甲醛的流II和作为第二组分的水，以及作为主要组分的三恶烷的流III和 水和甲醛作为次要组分，d）在具有高于第一蒸馏阶段的压力的第二蒸馏阶段中蒸馏料流III，得到三恶烷的流IV和三恶烷的流V作为主要成分， 甲醛作为次要组分，e）在第三蒸馏阶段中蒸馏物流V以获得水的流VI和三恶烷的再循环流VII作为主要成分，水和甲醛为t 他的次要成分。

公开(公告)号：US20080281109A1

公开(公告)日：2008-11-13

申请号：US12063155

申请日：2006-08-01

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

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

IPC: C07D323/06

CPC classification number: C07D323/06 ,  Y02P20/125

Abstract: 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.

Abstract translation: 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。