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公开(公告)号：NO327831B1
公开(公告)日：2009-10-05
申请号：NO20023481
申请日：2002-07-22
Applicant: BASF AG
Inventor： AUER HEINZ , HAMMER HANS , BESSLING BERND , HASSE HANS , SAUER FRIEDRICH , ADRIAN TILL , VICARI MAXIMILIAN
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.
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公开(公告)号：CA2681976A1
公开(公告)日：2008-10-09
申请号：CA2681976
申请日：2008-03-27
Applicant: BASF AG
Inventor： LANG NEVEN , STROEFER ECKHARD , SIEGERT MARKUS , HASSE HANS
IPC: C07D323/06
Abstract: The invention relates to a method for producing trioxane from trioxymethy lene glycol dimethyl ether (POMD- MEn=3) by reacting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequently proces sing the reaction mixture by distillation. The method comprises the followin g steps: a) feeding trioxymethylene glycol dimethyl ether (POMDMEn=3) or a m ixture containing trioxymethylene glycol dimethyl ether to a reactor and rea cting the substance in the presence of an acidic catalyst to give a mixture (a) containing trioxane, formaldehyde, water, methylene glycol (MG), polyoxy methylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn= 1) and polyoxymethylene glycol dimethyl ether (POMDMEn>1); b) separating the reaction mixture (a) by distillation to give a low-boiling fraction (b1) containing trioxane, formaldehyde, water, methylene glycol, methanol, hemif ormal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2) and a high-boiling fraction (b2) containing polyoxymethylene glycols (MGn&g t;1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ether (POM DMEn>2); c) separating the low-boiling fraction (b1) by distillation to g ive a low-boiling fraction (c1) containing formaldehyde, water, methylene gl ycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimet hyl ether (POMDMEn=2) and a high-boiling fraction (c2) containing trioxane.
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63.发明专利
公开(公告)号：MX2007015837A
公开(公告)日：2008-02-22
申请号：MX2007015837
申请日：2006-06-12
Applicant: BASF AG
Inventor： STROFER ECKHARD , HASSE HANS , BLAGOV SERGEJ
Abstract: Un proceso para preparar dimetil eter de tri- y tetraoximetilenglicol (POMDMEn=3.4) reaccionado formaldehido con metanol y el tratamiento subsiguientemente de la mezcla de reaccion por destilacion, que comprende las etapas de: a) alimentar la solucion de formaldehido acuoso y metanol a un reactor y reaccionar; b) alimentar la mezcla a de reaccion a un evaporador reactivo y separarla en una friccion b1 con punto de ebullicion inferior que comprende formaldehido, agua, metanol, metilenglicol, polioximetilenglicoles, hemiformales, metilal y dimetil eteres de polioximetilenglicol (POMDMEn>1), y una fraccion b2 con punto de ebullicion superior, y reciclar la fraccion b2 con punto de ebullicion superior al reactor (etapa a)); c) alimentar la fraccion b1 con punto de ebullicion inferior a una primera columna de destilacion y separarla en una fraccion c1 con punto de ebullicion inferior que comprende formaldehido, agua, metilenglicol, metanol, hemiformales, metilal, dimetil eter de di-, tri- y tetraoximetilenglicol (POMDMEn=2,3,4), y una fraccion c2 con punto de ebullicion superior, y reciclar la fraccion c2 fraccion con punto de ebullicion superior en el evaporador reactivo (etapa b)); d) alimentar la fraccion c1 con punto de ebullicion inferior a una segunda columna de destilacion y separarla en una fraccion d1 con punto de ebullicion inferior y una fraccion d2 con punto de ebullicion superior que consiste de formaldehido, agua, metilenglicol, polioximetilenglicoles, dimetil eter de tri- y tetraoximetilenglicol (POMDMEn=3.4); e) alimentar la fraccion d2 con punto de ebullicion superior a un aparato de separacion de fases y separarla en una fase e1 acuosa que consiste de formaldehido, agua, metilenglicol y polioximetilenglicoles, y una fase e2 organica que comprende dimetil eter de tri- y tetraoximetilenglicol (POMDMEn=3,4); f) alimentar la fase e2 organica a una tercera columna de destilacion y separarla en una fraccion f1 con punto de ebullicion inferior que consiste de formaldehido, agua, metilenglicol y polioximetilenglicoles, y una fraccion f2 con punto de ebullicion superior que consiste de dimetil eter de tri- y tetraoximetilenglicol (POMDMEn=3.4).
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公开(公告)号：AU2006310719A1
公开(公告)日：2007-05-10
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.
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公开(公告)号：CA2623572A1
公开(公告)日：2007-02-08
申请号：CA2623572
申请日：2006-07-19
Applicant: BASF AG
Inventor： GRUETZNER THOMAS , HASSE HANS , STAMMER ACHIM , SIEGERT MARKUS , FRIESE THORSTEN , BLAGOV SERGEJ , STROEFER ECKHARD , LANG NEVEN
IPC: C07D323/06
Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor and allowed to react to obtain a product stream A 2 comprising trioxane, water and formaldehyde; b) stream A 2 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 B 1 enriched in trioxane and additionally comprising water and formaldehyde, and the recycle stream B 2 consisting substantially of formaldehyde and water; c) stream B 1 and a recycle stream D 1 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 C 1 comprising predominantly trioxane and additionally formaldehyde and water, and a stream C 2 consisting substantially of formaldehyde and water; d) stream C 1 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 D 1 and a product stream D 2 consisting substantially of trioxane, in which a removal of the low boilers present in streams B 1 or C 1 may be undertaken between steps b) and c) or c) and d).
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Patent Agency Ranking
公开(公告)号：DE102005027702A1
公开(公告)日：2006-12-21
申请号：DE102005027702
申请日：2005-06-15
Applicant: BASF AG
Inventor： STROEFER ECKHARD , HASSE HANS , BLAGOV SERGEJ
IPC: C07C41/56 , C07C41/58 , C07C43/303
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.
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公开(公告)号：AT344693T
公开(公告)日：2006-11-15
申请号：AT04716558
申请日：2004-03-03
Applicant: BASF AG
Inventor： STROEFER ECKHARD , LANG NEVEN , LICHTFERS UTE , STEINBRENNER ULRICH , HASSE HANS
Abstract: A method for separating a liquid mixture containing readily-volatile and sparingly-volatile components involves using a film evaporator with a heat-exchange surface which is coated with material which catalyses the formation of readily-volatile component(s) in the liquid film. A method for separating a liquid mixture containing (A) readily-volatile and (B) sparingly-volatile components in a film evaporator by (i) producing a continuous stream of a liquid starting mixture, (ii) producing a liquid film from the mixture and bringing it into contact with a heat-exchange surface of the evaporator, and (iii) partly evaporating the film to give two gas streams rich in (A) and (B) respectively. In this method, (iv) the heat-exchange surface is coated with a catalytic material and (v) a chemical reaction in which (A) is/are formed is catalysed in the liquid film. An independent claim is also included for a film evaporator with a heat-exchanger wall which is coated with catalytic material.
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公开(公告)号：NO20062749L
公开(公告)日：2006-07-12
申请号：NO20062749
申请日：2006-06-13
Applicant: BASF AG
Inventor： STAMMER ACHIM , HASSE HANS , STROEFER ECKHARD , GRUETZNER THOMAS , LANG NEVEN , SIEGERT MARKUS , FRIESE THORSTEN , OTT MICHAEL , BLAGOV SERGEJ
IPC: B01D3/14 , B01D3/36 , C07D323/06
Abstract: 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.
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公开(公告)号：DE102004053839A1
公开(公告)日：2006-05-11
申请号：DE102004053839
申请日：2004-11-04
Applicant: BASF AG
Inventor： SCHELLING HEINER , STROEFER ECKHARD , PINKOS ROLF , HAUNERT ANDREA , TEBBEN GERD-DIETER , HASSE HANS , BLAGOV SERGEJ
Abstract: Preparation of a polyoxymethylene dimethyl ether (I) comprises feeding methylal and trioxane to a reactor and reacting in the presence of an acidic catalyst, where the quantity of water introduced into the reaction mixture by means of the methylal, trioxane and/or the catalyst is less than 1 wt.%, related to the reaction mixture. Preparation of a polyoxymethylene dimethyl ether (I) of formula (H 3CO(CH 2O) nCH 3) (where n is 2-10) comprises feeding methylal and trioxane to a reactor and reacting in the presence of an acidic catalyst, where the quantity of water introduced into the reaction mixture by means of the methylal, trioxane and/or the catalyst are less than 1 wt.%, related to the reaction mixture.
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70.发明专利
公开(公告)号：CA2500046A1
公开(公告)日：2005-09-09
申请号：CA2500046
申请日：2005-03-08
Applicant: BASF AG
Inventor： CLAUSEN IVEN , ASPRION NORBERT , HASSE HANS , HOEFER FRANK
Abstract: A description is given of an absorption medium for deacidifying fluid stream s which has improved oxidation stability and comprises at least one aliphatic amine, in particular an alkanolamine, and at least one non-hydroquinoid antioxidant. The absorption medium serves for deacidifying a fluid stream, in particular an oxygen-containing fluid stream, the fluid stream being brought into intimate contact with the absorption medium in at least one absorption step.
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