-
公开(公告)号：AU2006259100B2
公开(公告)日：2011-04-07
申请号：AU2006259100
申请日：2006-06-12
Applicant: BASF AG
Inventor： BLAGOV SERGEJ , HASSE HANS , STROFER ECKHARD
Abstract: 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.
-
公开(公告)号：AU2006310719B2
公开(公告)日：2011-03-31
申请号：AU2006310719
申请日：2006-06-12
Applicant: BASF AG
Inventor： BLAGOV SERGEJ , HASSE HANS , STROEFER ECKHARD
IPC: C08G65/00
Abstract: Preparing tri-/tetra oxymethylene glycol dimethylether (I) comprises e.g. distilling an aqueous formaldehyde solution and methanol in a reactor to form a reaction mixture containing polyoxy methylene glycol dimethylether (III); distilling the reaction mixture to form a high-boiling fraction (A2) containing e.g. (III); distilling (A2) to form e.g. a low-boiling fraction (A3) having e.g. (I); distilling (A3) to form a high-boiling fraction (A5) having e.g. (I); and distilling (A5) to form an organic phase containing (I). Preparing tri-/tetra oxymethylene glycol dimethylether through the conversion of formaldehyde with methanol and successive distillation of a reaction mixture, comprises: feeding an aqueous formaldehyde solution and methanol in a reactor to form the reaction mixture containing formaldehyde, water, methylene glycol, polyoxymethylene glycol, methanol, hemiformal, methylal and polyoxymethylene glycol dimethylether (III); feeding the reaction mixture into a first distillation column (5) and separating a low-boiling fraction (A1) containing formaldehyde, water, methylene glycol, methanol, methylal and polyoxy methylene glycoldimethylether and a high-boiling fraction (A2) containing formaldehyde, water, methanol, polyoxymethylene glycol, hemiformal and (III); feeding (A2) into a second distillation column (8) and separating a low-boiling fraction (A3) containing formaldehyde, water, methylene glycol, polyoxymethylene glycol, methanol, hemiformal, di-chloroethylene and (I) and a high-boiling containing polyoxymethylene glycol, high-boiling hemiformal and high-boiling polyoxymethylene glycol dimethylether; feeding (A3) and optionally feed-back stream containing formaldehyde, water, methylene glycol and polyoxymethylene glycol into a third distillation column (13) and separating a high volatile fraction (A4) containing formaldehyde, water, methanol, polyoxymethylene glycol, hemiformal and dioxymethylene glycol dimethylether and a high-boiling fraction (A5) containing formaldehyde, water, methylene glycol, polyoxymethylene glycol and (I); feeding (A5) in to a phase separator and separating an aqueous phase containing formaldehyde, water, methylene glycol and polyoxymethyleneglycol and an organic phase containing (I); feeding the organic phase into a fourth distillation column (18) and separating a low-boiling fraction (A6) containing formaldehyde, water, methylene glycol and polyoxymethylene glycol and a high-boiling fraction containing (I); and optionally feeding the aqueous phase in a fifth distillation column (24) and separating a low-boiling fraction (A7) containing formaldehyde, water, methylene glycol and polyoxymethylene glycol and a high-boiling fraction containing water.
-
公开(公告)号：NZ564178A
公开(公告)日：2009-11-27
申请号：NZ56417806
申请日：2006-06-12
Applicant: BASF AG
Inventor： STROEFER ECKHARD , HASSE HANS , BLAGOV SERGEJ
Abstract: 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 is disclosed, wherein the process comprises 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 (POMDMEn=1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>1); b) feeding the reaction mixture a into a reactive evaporator and separating into a low boiler fraction b1 comprising formaldehyde, water, methanol, methylene glycol, polyoxymethylene glycols, hemiformals, methylal and polyoxymethylene glycol dimethyl ethers (POMDMEn>1), and a high boiler fraction b2 comprising polyoxymethylene glycols, hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ethers (POMDMEn>3), and recycling the high boiler fraction b2 into the reactor (step a)); c) feeding the low boiler fraction b1 into a first distillation column and separating into a low boiler fraction c1 comprising formaldehyde, water, methylene glycol, methanol, hemiformals, methylal, di-, tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=2,3,4), and a high boiler fraction c2 comprising polyoxymethylene glycols, high-boiling hemiformals (HFn>1) and high-boiling polyoxymethylene glycol dimethyl ethers (POMDMEn>4), and recycling the high boiler fraction c2 into the reactive evaporator (step b)); d) feeding the low boiler fraction c1 into a second distillation column and separating into a low boiler fraction d1 comprising formaldehyde, water, methanol, polyoxymethylene glycols, hemiformals, methylal and dioxymethylene glycol dimethyl ether 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 third 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); and g) optionally feeding the aqueous phase e1 into a fourth distillation column and separating into a low boiler fraction g1 substantially consisting of formaldehyde, water, methylene glycol and polyoxymethylene glycols, and a high boiler fraction substantially consisting of water.
-
114.发明专利
公开(公告)号：NZ563490A
公开(公告)日：2009-11-27
申请号：NZ56349006
申请日：2006-06-12
Applicant: BASF AG
Inventor： STROFER ECKHARD , SCHELLING HEINER , HASSE HANS , BLAGOV SERGEJ
Abstract: A process for preparing polyoxymethylene dialkyl ethers of formula: H2m+1CmO(CH2O)nCmH2m+1 where n is 2 to 10, m independently is 1 or 2 is disclosed, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether or diethyl ether and trioxane are fed into a reactor and reacted in the presence of an acid catalyst, whereby the amount of water introduced into the reaction mixture with the dialkyl ether, trioxane and/or the catalyst is less than 1 % by weight based on the reaction mixture.
-
公开(公告)号：CA2345053C
公开(公告)日：2008-07-15
申请号：CA2345053
申请日：1999-09-21
Applicant: BASF AG
Inventor： THEIS GERHARD , VANSANT FRANS , HASSE HANS , ADRIAN TILL , BESSLING BERND
Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. During the vacuum dehydration, an aqueous stream containing monoethylene glycol in a concentration of less than 1 wt. %, preferably less than 0.1 wt. %, medium boilers and light boilers is drawn off and then sluiced out, optionally after reprocessing.
-
Patent Agency Ranking
公开(公告)号：MX2008001005A
公开(公告)日：2008-03-25
申请号：MX2008001005
申请日：2006-08-04
Applicant: BASF AG
Inventor： STROEFER ECKHARD , HASSE HANS , LANG NEVEN , STAMMER ACHIM , FRIESE THORSTEN , SIEGERT MARKUS , GRUTZNER THOMAS , BLAGOV SERGEJ
IPC: C07D323/06
Abstract: La invencion se relaciona con un proceso integrado para prepara trioxano de formaldehido en el que una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido; la corriente A2 se alimenta a una primera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido; la corriente B1 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una segunda columna de destilacion y se destilan a una presion en la escala de 0.2 a 17.5 bar para obtener una corriente C2 de producto que consiste substancialmente detrioxano, y una corriente C1 que comprende trioxano, agua y formaldehido; la corriente C1 se alimenta a una tercera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua y formaldehido. (Figura 1).
-
公开(公告)号：MX2008001002A
公开(公告)日：2008-03-25
申请号：MX2008001002
申请日：2006-08-01
Applicant: BASF AG
Inventor： STROFER ECKHARD , HASSE HANS , LANG NEVEN , STAMMER ACHIM , FRIESE THORSTEN , SIEGERT MARKUS , GRUTZNER THOMAS , BLAGOV SERGEJ
IPC: C07D323/06
Abstract: La invencion se relaciona con un proceso integrado para preparar trioxano a partir de formaldehido en el que, en un primer paso, una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido. La corriente A2 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una primera columna de destilacion y se destilan a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido. La corriente B1 se alimenta a una segunda columna de destilacion y se destila a una presion en la escala de 0.2 a 17.-5 bar para obtener una corriente C2 de producto que consiste substancialmente de trioxano, y una corriente C1 que comprende trioxano, agua y formaldehido. La corriente C1 se alimenta a una tercer acolumna de destilacion y se destila a una presion en la escala de 1 a 10 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua.
-
公开(公告)号：MX2007014949A
公开(公告)日：2008-02-15
申请号：MX2007014949
申请日：2006-06-12
Applicant: BASF AG
Inventor： STROEFER ECKHARD , HASSE HANS , BLAGOV SERGEJ
IPC: C08G65/00
Abstract: Un proceso para preparar eter dimetilico de tri- y tetraoximetilenglicol (POMDMEn=3,4) haciendo reaccionar formaldehido con metanol y subsecuentemente trabajar la mezcla de reaccion mediante destilacion, que comprende los pasos de: a) alimentar solucion de formaldehido acuosa y metanol hacia un reactor y hacer reaccionar para proporcionar una mezcla que comprende formaldehido, agua, metilenglicol (MG), polioximetilenglicoles (MGn>1), metanol, hemiformales (HF), metilal (POMDMEn=1) y esteres dimetilicos de polioximetilenglicol (POMDMEn>1); b) alimentar la mezcla de reaccion a una primera columna de destilacion y separar en una fraccion b1 de ebullidor bajo y una fraccion b2 de ebullidor alto que comprende formaldehido, agua, metanol, polioximetilenglicoles, hemiformales y esteres dimetilicos de polioximetilenglicol (POMDMEn>1); c) alimentar la fraccion b2 de ebullidor alto en una segunda columna de destilacion y separar hacia una fraccion c1 de ebullidor bajo que comprende formaldehido, agua, metilenglicol, polioximetilenglicoles, metanol, hemiformales, y eter dimetailico de di-, t6ri-y tetraoximetilenglicol (POMDMEn=2,3,4), y una fraccion c2 de ebullidor alto; d) alimentar la fraccion c1 de ebullidor bajo a un tercera columna de destilacion y separar en una fraccion d1 de ebullidor bajo y una fraccion d2 de ebullidor alto que consiste substancialmente de formaldehido, agua, metilenglicol, polioximetilenglicoles, eter dimetilico de tri- y tetraoximetilenglicol (POMDMEn=3,4); e) alimentar la fraccion d2 de ebullidor alto a un aparato de separacion de fase y separar en una fase e1 acuosa que consiste substancialmente de formaldehido, agua, metilenglicol y polioximetilenglicoles, y una fase e2 organica que comprende eter dimetilico de tri- y tetraoximetlenglicol (POMDMEn=3,4); f) alimentar la fase e2 organica en una cuarta columna de destilacion y separar en una fraccion f1 de ebullidor bajo que consiste substancialmente de formaldehido, agua, metilenglicol y polioximetilenglicoles, y una fraccion f2 de ebullidor alto que consiste substancialmente de eter dimetilico de tri- y tetraoximetilenglicol (POMDMEn=3,4).
-
公开(公告)号：NO20076301L
公开(公告)日：2008-01-14
申请号：NO20076301
申请日：2007-12-07
Applicant: BASF AG
Inventor： STROFER ECKHARD , HASSE HANS , BLAGOV SERGEJ
Abstract: 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.
-
公开(公告)号：NO20076065L
公开(公告)日：2008-01-14
申请号：NO20076065
申请日：2007-11-26
Applicant: BASF AG
Inventor： HASSE HANS , STROEFER ECKHARD , BLAGOV SERGEJ
Abstract: Preparing tri-/tetra oxymethylene glycol dimethylether (I) comprises e.g. distilling an aqueous formaldehyde solution and methanol in a reactor to form a reaction mixture containing polyoxy methylene glycol dimethylether (III); distilling the reaction mixture to form a high-boiling fraction (A2) containing e.g. (III); distilling (A2) to form e.g. a low-boiling fraction (A3) having e.g. (I); distilling (A3) to form a high-boiling fraction (A5) having e.g. (I); and distilling (A5) to form an organic phase containing (I). Preparing tri-/tetra oxymethylene glycol dimethylether through the conversion of formaldehyde with methanol and successive distillation of a reaction mixture, comprises: feeding an aqueous formaldehyde solution and methanol in a reactor to form the reaction mixture containing formaldehyde, water, methylene glycol, polyoxymethylene glycol, methanol, hemiformal, methylal and polyoxymethylene glycol dimethylether (III); feeding the reaction mixture into a first distillation column (5) and separating a low-boiling fraction (A1) containing formaldehyde, water, methylene glycol, methanol, methylal and polyoxy methylene glycoldimethylether and a high-boiling fraction (A2) containing formaldehyde, water, methanol, polyoxymethylene glycol, hemiformal and (III); feeding (A2) into a second distillation column (8) and separating a low-boiling fraction (A3) containing formaldehyde, water, methylene glycol, polyoxymethylene glycol, methanol, hemiformal, di-chloroethylene and (I) and a high-boiling containing polyoxymethylene glycol, high-boiling hemiformal and high-boiling polyoxymethylene glycol dimethylether; feeding (A3) and optionally feed-back stream containing formaldehyde, water, methylene glycol and polyoxymethylene glycol into a third distillation column (13) and separating a high volatile fraction (A4) containing formaldehyde, water, methanol, polyoxymethylene glycol, hemiformal and dioxymethylene glycol dimethylether and a high-boiling fraction (A5) containing formaldehyde, water, methylene glycol, polyoxymethylene glycol and (I); feeding (A5) in to a phase separator and separating an aqueous phase containing formaldehyde, water, methylene glycol and polyoxymethyleneglycol and an organic phase containing (I); feeding the organic phase into a fourth distillation column (18) and separating a low-boiling fraction (A6) containing formaldehyde, water, methylene glycol and polyoxymethylene glycol and a high-boiling fraction containing (I); and optionally feeding the aqueous phase in a fifth distillation column (24) and separating a low-boiling fraction (A7) containing formaldehyde, water, methylene glycol and polyoxymethylene glycol and a high-boiling fraction containing water.
-
-
-
-
-
-
-
-
-
Search Results
144
records
(took 0.025 seconds)
