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1. 发明申请

US20100145079A1 METHOD FOR PRODUCING CYCLIC FORMALDEHYDE DERIVATIVES FROM POLYOXY DIALKYL ETHERS 审中-公开
标题翻译：从多羟基二烷基醚生产环状甲醛衍生物的方法
公开(公告)号：US20100145079A1
公开(公告)日：2010-06-10
申请号：US12532430
申请日：2008-03-27
申请人： Eckhard Stroefer , Neven Lang , Markus Siegert , Hans Hasse
发明人： Eckhard Stroefer , Neven Lang , Markus Siegert , Hans Hasse
IPC分类号： C07D323/06
CPC分类号： C07D323/06
摘要： A process for preparing trioxane from trioxymethylene glycol dimethyl ether (POMDMEn=3) by converting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequent distillative workup of the reaction mixture, comprising the steps of: a) feeding trioxymethylene glycol dimethyl ether (POMDMEn=3) or a mixture comprising trioxymethylene glycol dimethyl ether into a reactor and converting it in the presence of an acidic catalyst to a mixture a comprising trioxane, formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn=1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>1); b) distillatively separating the reaction mixture a into a low boiler fraction b1 comprising formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2), and a high boiler fraction b2 comprising trioxane, polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>2); c) distillatively separating the high boiler fraction b2 into a low boiler fraction c1 comprising trioxane, and a high boiler fraction c2 comprising polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>2).
摘要翻译：一种通过在酸性催化剂存在下转化三甘醇二甲醚和随后的反应混合物的蒸馏后处理由三甘醇二甲醚（POMDMEn = 3）制备三恶烷的方法，包括以下步骤：a）将三亚甲基二醇二甲醚 POMDMEn = 3）或包含三亚甲基二醇二甲醚的混合物加入到反应器中并在酸性催化剂存在下将其转化为包含三恶烷，甲醛，水，亚甲基二醇（MG），聚氧化亚甲基二醇（MGn1），甲醇，半缩甲醛（HF），甲缩醛（POMDMEn = 1）和聚氧化亚甲基二醇二甲醚（POMDMEn> 1）; b）将反应混合物a蒸馏分离成包含甲醛，水，亚甲基二醇，甲醇，半缩甲醛（HFn = 1），甲缩醛和二甲亚甲基二醇二甲醚（POMDMEn = 2）的低沸点馏分b1，以及高沸点馏分b2，三氧杂环己烷，聚甲醛（MGn> 1），半缩甲醛（HFn1）和聚甲醛二醇二甲醚（POMDMEn> 2）; c）将高沸点馏分b2蒸馏成包含三恶烷的低沸点馏分c1和包含聚甲醛二醇（MGn> 1），半缩甲醛（HFn1）和聚甲醛二醇二甲醚（POMDMEn2）的高沸点馏分c2。

2. 发明申请

US20070155972A1 Method for separating trioxane from a mixture containing trioxane, formaldehyde and water 审中-公开
标题翻译：从含有三恶烷，甲醛和水的混合物中分离三恶烷的方法
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。

3. 发明申请

US20080281109A1 Integrated Method For the Production of Trioxane From Formaldehyde 审中-公开
标题翻译：甲醛生产三恶烷的综合方法
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。

4. 发明申请

US20100152466A1 INTEGRATED METHOD FOR PRODUCING TRIOXANE FROM FORMALDEHYDE 审中-公开
标题翻译：用于从甲醛生产三氧化二铁的综合方法
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。

5. 发明申请

US20100130756A1 METHOD FOR PRODUCING TRIOXANE FROM TRIOXYMETHYLENE GLYCOL DIMETHYL ETHER 审中-公开
标题翻译：从三甲基乙二醇二甲基醚生产三氧化硅的方法
公开(公告)号：US20100130756A1
公开(公告)日：2010-05-27
申请号：US12593964
申请日：2008-03-27
申请人： Eckhard Stroefer , Neven Lang , Markus Siegert , Hans Hasse
发明人： Eckhard Stroefer , Neven Lang , Markus Siegert , Hans Hasse
IPC分类号： C07D323/06
CPC分类号： C07D323/06
摘要： A process for preparing trioxane from trioxymethylene glycol dimethyl ether (POMDMEn=3) by converting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequent distillative workup of the reaction mixture, comprising the steps of: a) feeding trioxymethylene glycol dimethyl ether (POMDMEn=3) or a mixture comprising trioxymethylene glycol dimethyl ether into a reactor and converting it in the presence of an acidic catalyst to a mixture a comprising trioxane, formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn=1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>1); b) distillatively separating the reaction mixture a into a low boiler fraction b1 comprising trioxane, formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2), and a high boiler fraction b2 comprising polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>2); c) distillatively separating the low boiler fraction b1 into a low boiler fraction c1 comprising formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2), and a high boiler fraction c2 comprising trioxane.
摘要翻译：一种通过在酸性催化剂存在下转化三甘醇二甲醚和随后的反应混合物的蒸馏后处理由三甘醇二甲醚（POMDMEn = 3）制备三恶烷的方法，包括以下步骤：a）将三亚甲基二醇二甲醚 POMDMEn = 3）或包含三亚甲基二醇二甲醚的混合物加入到反应器中并在酸性催化剂存在下将其转化为包含三恶烷，甲醛，水，亚甲基二醇（MG），聚氧化亚甲基二醇（MGn1），甲醇，半缩甲醛（HF），甲缩醛（POMDMEn = 1）和聚氧化亚甲基二醇二甲醚（POMDMEn> 1）; b）将反应混合物a蒸馏分离成包含三恶烷，甲醛，水，亚甲基二醇，甲醇，半缩甲醛（HFn = 1），甲缩醛和二甲亚甲基二醇二甲醚（POMDMEn = 2）的低沸点馏分b1和高沸点馏分 b2包含聚甲醛二醇（MGn> 1），半缩甲醛（HFn1）和聚甲醛二醇二甲醚（POMDMEn> 2）; c）将低沸点馏分b1蒸馏分离成包含甲醛，水，亚甲基二醇，甲醇，半缩甲醛（HFn = 1），甲缩醛和二羟甲基二醇二甲醚（POMDMEn = 2）的低沸点馏分c1，以及高锅炉馏分c2 包括三恶烷。

6. 发明申请

US20080194845A1 Integrated Process For Preparing Trioxane From Formaldehyde 审中-公开
标题翻译：甲醛制备三恶烷的综合工艺
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。

7. 发明申请

US20070272540A1 Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 有权
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

8. 发明授权

US08372993B2 Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 失效
标题翻译：通过压力变换精馏从三恶烷/甲醛/水混合物中分离三恶烷的方法
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。

9. 发明申请

US20070293688A1 Method for the Separation by Distillation of Pure Trioxane 审中-公开
标题翻译：蒸馏纯三恶烷分离方法
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。

10. 发明授权

US08530678B2 Trioxane production method wherein a side aqueous flow is deducted at a first distillation stage 失效
标题翻译：三恶烷制备方法，其中在第一蒸馏阶段扣除侧水流
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。

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