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1. 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。

2. 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。

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. 发明授权

US07671240B2 Method for producing polyoxymethylene dimethyl ethers from methanol and formaldehyde 失效
标题翻译：从甲醇和甲醛生产聚甲醛二甲醚的方法
公开(公告)号：US07671240B2
公开(公告)日：2010-03-02
申请号：US11917528
申请日：2006-06-12
申请人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
发明人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
IPC分类号： C07C41/56 , C08G2/08
CPC分类号： C07C41/48 , C07C41/56 , C07C41/58 , C08G2/08 , C07C43/30
摘要： Processes for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4) include feeding a reaction mixture of an aqueous formaldehyde solution and methanol into a reactive evaporator and separating into a first low boiler fraction and a first high boiler fraction, recycling the first high boiler fraction into the reactor, feeding the first low boiler fraction into a first distillation column and separating into a second low boiler fraction and a second high boiler fraction, recycling the second high boiler fraction into the reactive evaporator, feeding the second low boiler fraction into a second distillation column and separating into a third low boiler fraction and a third high boiler fraction, feeding the third high boiler fraction into a phase separation apparatus and separating into an aqueous phase and an organic phase, and feeding the organic phase into a third distillation column and separating into a low and high boiler fractions.
摘要翻译：制备三 - 和四甲基二醇二甲醚（POMDMEn = 3,4）的方法包括将甲醛水溶液和甲醇的反应混合物进料到反应蒸发器中，并分离成第一低沸点馏分和第一高沸点馏分，循环利用将第一高锅炉馏分进入反应器，将第一低沸点馏分进料到第一蒸馏塔中并分离成第二低沸点馏分和第二高沸点馏分，将第二高沸点馏分再循环到反应蒸发器中，将第二低沸点馏分将馏分分馏成第二蒸馏塔并分离成第三低沸点馏分和第三高沸点馏分，将第三高沸点馏分进料到相分离装置中并分离成水相和有机相，并将有机相进料至第三蒸馏塔并分离成低和高沸点馏分。

6. 发明授权

US07999140B2 Method for the production of polyoxymethylene dialkyl ethers from trioxan and dialkylethers 失效
标题翻译：从三烷和二烷基醚生产聚亚甲基二烷基醚的方法
公开(公告)号：US07999140B2
公开(公告)日：2011-08-16
申请号：US11917192
申请日：2006-06-12
申请人： Eckhard Stroefer , Heiner Schelling , Hans Hasse , Sergej Blagov
发明人： Eckhard Stroefer , Heiner Schelling , Hans Hasse , Sergej Blagov
IPC分类号： C07C41/18
CPC分类号： C07C41/50 , C07C41/58 , C07C43/303 , C07C43/30
摘要： A process for preparing polyoxymethylene dialkyl ethers of the formula H2m+1CmO(CH2O)nCmH2m+1 where n=2-10, m, identically or differently,=1 or 2, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether and diethyl ether, and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, the amount of water introduced into the reaction mixture by the dialkyl ether, trioxane and/or the catalyst being
摘要翻译：制备式H2m + 1CmO（CH2O）nCmH2m + 1的聚氧化亚甲基二烷基醚的方法，其中n = 2-10，m，相同或不同，= 1或2，其中选自二甲醚，甲基乙基醚和二乙醚和三恶烷进料到反应器中并在酸性催化剂存在下反应，基于二烷基醚，三恶烷和/或催化剂引入到反应混合物中的水的量基于反应混合物。

7. 发明申请

US20070260094A1 Method for Producing Polyoxymethylene Dimethyl Ethers 审中-公开
标题翻译：生产聚甲醛二甲醚的方法
公开(公告)号：US20070260094A1
公开(公告)日：2007-11-08
申请号：US11575936
申请日：2005-10-19
申请人： Heiner Schelling , Eckhard Stroefer , Rolf Pinkos , Andrea Haunert , Gerd-Dieter Tebben , Hans Hasse , Sergej Blagov
发明人： Heiner Schelling , Eckhard Stroefer , Rolf Pinkos , Andrea Haunert , Gerd-Dieter Tebben , Hans Hasse , Sergej Blagov
IPC分类号： C07C43/315
CPC分类号： C08G2/12 , C07C41/56 , C07C43/30
摘要： A process for preparing polyoxymethylene dimethyl ether of the formula H3CO(CH2O)nCH3 where n=2-10, in which methylal and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, wherein the amount of water introduced into the reaction mixture by methylal, trioxane and/or the catalyst is 4 are recycled into the reaction.
摘要翻译：一种制备下式的聚氧化亚甲基二甲醚的方法，其中式<βin-line-formula description =“In-line Formulas”end =“lead”→> H 3 CO（CH 2） α-in-line-formula description =“In-line Formulas”end =“tail”？>其中n = 2-10，其中甲缩醛和三恶烷进料到反应器中并在酸性催化剂存在下反应，其中基于反应混合物，通过甲缩醛，三恶烷和/或催化剂引入反应混合物的水的量为<1重量％。优选地，通过从反应混合物中蒸馏得到包含聚甲醛二甲醚（其中n = 3和4）的级分，其中n <3且任选n≥4的甲缩醛，三氧杂环己烷和聚甲醛二甲醚被再循环到反应中。

8. 发明授权

US07700809B2 Process for preparing polyoxymethylene dimethyl ethers from methanol and formaldehyde 失效
标题翻译：从甲醇和甲醛制备聚甲醛二甲醚的方法
公开(公告)号：US07700809B2
公开(公告)日：2010-04-20
申请号：US11917294
申请日：2006-06-12
申请人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
发明人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
IPC分类号： C07C41/18
CPC分类号： C08G16/0212 , C07C41/56 , C07C43/30
摘要： A process for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4) by reacting formaldehyde with methanol and subsequently working up the reaction mixture by distillation, consisting of: a) feeding aqueous formaldehyde solution and methanol into a reactor and reacting to give a mixture including formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn=1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>1); b) feeding the reaction mixture a into a first distillation column and separating into a low boiler fraction b1 and a high boiler fraction b2 including formaldehyde, water, methanol, MGn>1, HF and POMDMEn>1; c) feeding the high boiler fraction b2 into a second distillation column and separating into a low boiler fraction c1 including formaldehyde, water, MG, MGn>1, methanol, HF, di-, tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=2,3,4), and a high boiler fraction c2; d) feeding the low boiler fraction c1 into a third distillation column and separating into a low boiler fraction d1 and a high boiler fraction d2 substantially consisting of formaldehyde, water, MG, MGn>1 and POMDMEn=3,4; e) feeding the high boiler fraction d2 into a phase separation apparatus and separating into an aqueous phase e1 substantially consisting of formaldehyde, water, MG and MGn>1, and an organic phase e2 including POMDMEn=3,4; and f) feeding the organic phase e2 into a fourth distillation column and separating into a low boiler fraction f1 substantially consisting of formaldehyde, water, MG and MGn>1, and a high boiler fraction f2 substantially consisting of POMDMEn=3,4.
摘要翻译：一种通过使甲醛与甲醇反应并随后通过蒸馏处理反应混合物来制备三 - 和四甲基二醇二甲醚（POMDMEn = 3,4）的方法，由以下组成：a）将甲醛水溶液和甲醇进料到反应器中，并与得到包括甲醛，水，亚甲基二醇（MG），聚氧化亚甲基二醇（MGn> 1），甲醇，半缩甲醛（HF），甲缩醛（POMDMEn = 1）和聚甲醛二醇二甲醚（POMDMEn> 1）的混合物; b）将反应混合物a进料到第一蒸馏塔中并分离成低沸点馏分b1和包括甲醛，水，甲醇，MGn> 1，HF和POMDMEn> 1的高沸点馏分b2; c）将高沸点馏分b2进料到第二蒸馏塔中并分离成包含甲醛，水，MG，MGn> 1，甲醇，HF，二，三和四甲基二醇二甲醚的低沸点馏分c1（POMDMEn = 2 ，3,4）和高锅炉馏分c2; d）将低沸点馏分c1进料到第三蒸馏塔中并分离成低沸点馏分d1和基本上由甲醛，水，MG，MGn> 1和POMDMEn = 3,4组成的高沸点馏分d2; e）将高沸点馏分d2进料到相分离装置中并分离成基本上由甲醛，水，MG和MGn> 1组成的水相e1和包含POMDMEn = 3,4的有机相e2; 和f）将有机相e2进料到第四蒸馏塔中并分离成基本上由甲醛，水，MG和MGn> 1组成的低沸点馏分f1和基本上由POMDMEn = 3,4组成的高锅炉馏分f2。

9. 发明申请

US20080221368A1 Process for Preparing Polyoxymethylene Dimethyl Ethers from Methanol and Formaldehyde 失效
公开(公告)号：US20080221368A1
公开(公告)日：2008-09-11
申请号：US11917294
申请日：2006-06-12
申请人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
发明人： Eckhard Stroefer , Hans Hasse , Sergej Blagov
IPC分类号： C07C41/18
CPC分类号： C08G16/0212 , C07C41/56 , C07C43/30
摘要： A process for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4) by reacting formaldehyde with methanol and subsequently working up the reaction mixture by distillation, comprising the steps of.a) feeding aqueous formaldehyde solution and methanol into a reactor and reacting to give a mixture a comprising formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMENn=1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>1);b) feeding the reaction mixture a into a first distillation column and separating into a low boiler fraction b1 and a high boiler fraction b2 comprising formaldehyde, water, methanol, polyoxymethylene glycols, hemiformals and polyoxymethylene glycol dimethyl ethers (POMDMEn>1);c) feeding the high boiler fraction b2 into a second distillation column and separating into a low boiler fraction c1 comprising formaldehyde, water, methylene glycol, polyoxymethylene glycols, methanol, hemiformals, di-, tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=2,3,4), and a high boiler fraction c2;d) feeding the low boiler fraction c1 into a third distillation column and separating into a low boiler fraction d1 and a high boiler fraction d2 substantially consisting of formaldehyde, water, methylene glycol, polyoxymethylene glycols, tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4);e) feeding the high boiler fraction d2 into a phase separation apparatus and separating into an aqueous phase e1 substantially consisting of formaldehyde, water, methylene glycol and polyoxymethylene glycols, and an organic phase e2 comprising tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4);f) feeding the organic phase e2 into a fourth distillation column and separating into a low boiler fraction f1 substantially consisting of formaldehyde, water, methylene glycol and polyoxymethylene glycols, and a high boiler fraction f2 substantially consisting of tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4)

10. 发明申请

US20080207955A1 Method for the Production of Polyoxymethylene Dialkyl Ethers from Trioxan and Dialkylethers 失效
标题翻译：由三氧化硅和二烷基醚生产聚亚甲基二烷基醚的方法
公开(公告)号：US20080207955A1
公开(公告)日：2008-08-28
申请号：US11917192
申请日：2006-06-12
申请人： Eckhard Stroefer , Heiner Schelling , Hans Hasse , Sergej Blagov
发明人： Eckhard Stroefer , Heiner Schelling , Hans Hasse , Sergej Blagov
IPC分类号： C07C41/18
CPC分类号： C07C41/50 , C07C41/58 , C07C43/303 , C07C43/30
摘要： A process for preparing polyoxymethylene dialkyl ethers of the formula H2m+1CmO(CH2O)nCmH2m+1 where n=2-10, m, identically or differently,=1 or 2, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether and diethyl ether, and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, the amount of water introduced into the reaction mixture by the dialkyl ether, trioxane and/or the catalyst being
摘要翻译：制备下式的聚氧化亚甲基二烷基醚的方法<？in-line-formula description =“In-line Formulas”end =“lead”→> H 2 m + 1 C m O（CH 2 O 2）n H 2 H 2 H + 1 其中n = 2-10，m，相同或不同，= 1或2，其中选自二甲醚，甲基乙醚和二乙醚的二烷基醚，并将三恶烷加入到反应器中并在酸性催化剂的存在下反应，基于反应混合物，通过二烷基醚，三恶烷和/或催化剂引入反应混合物的水的量为<1重量％。

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