公开(公告)号：DK1582250T4

公开(公告)日：2022-05-30

申请号：DK05005035

申请日：2005-03-08

Applicant: BASF SE

Inventor： ASPRION NORBERT ,  HÖFER FRANK ,  CLAUSEN IVEN ,  HASSE HANS

IPC: C05F17/00 ,  B01D53/14

公开(公告)号：PL1582250T3

公开(公告)日：2013-10-31

申请号：PL05005035

申请日：2005-03-08

Applicant: BASF SE

Inventor： ASPRION NORBERT ,  HÖFER FRANK ,  CLAUSEN IVEN ,  HASSE HANS

IPC: B01D53/14 ,  C05F17/00

公开(公告)号：ES2318675T3

公开(公告)日：2009-05-01

申请号：ES06112836

申请日：2004-03-03

Applicant: BASF SE

Inventor： STROFER ECKHARD ,  LANG NEVEN ,  LICHTFERS UTE ,  STEINBRENNER ULRICH ,  HASSE HANS

IPC: B01D1/22 ,  B01D1/30 ,  C08G2/08

Abstract: Procedimiento para la separación de una mezcla líquida de productos, que contiene, al menos, un componente fácilmente volátil y, al menos, un componente difícilmente volátil, en un evaporador de película, según el cual (i) se prepara una corriente continua de una mezcla líquida de los productos de partida, (ii) se genera una película líquida a partir de la corriente continua y se pone en contacto con una superficie intercambiadora de calor del evaporador de película, (iii) se evapora en parte la película líquida, con lo que se obtiene una corriente gaseosa, enriquecida en componentes fácilmente volátiles, y una corriente líquida, enriquecida en componentes difícilmente volátiles, donde, (iv) la superficie intercambiadora de calor está recubierta con un material catalíticamente activo, que (v) cataliza una conversión química en la película líquida, mediante la cual se forma, al menos, un componente fácilmente volátil, caracterizado porque el material catalíticamente activo es un material intercambiador de iones o un material compuesto constituido por un polímero poroso o en forma de gel y por una zeolita.

公开(公告)号：ES2317574T3

公开(公告)日：2009-04-16

申请号：ES06778089

申请日：2006-08-01

Applicant: BASF SE

Inventor： LANG NEVEN ,  STROFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS

IPC: C07D323/06

Abstract: Procedimiento integrado para la obtención de trioxano a partir de formaldehído, que comprende las etapas siguientes: a) se alimentan a un reactor para la síntesis de trioxano una corriente A1, que contiene agua y formaldehído, y una corriente de reciclo B2, que está constituida esencialmente por agua y por formaldehído, en cuyo reactor se convierte el formaldehído para dar trioxano, obteniéndose una corriente de producto A2, que contiene trioxano, agua y formaldehído; b) la corriente A2 se alimenta en una primera columna de destilación como alimentación lateral en la sección de agotamiento y una corriente de reciclo D1, que contiene trioxano, agua y formaldehído, se alimenta en una primera columna de destilación como alimentación lateral en la sección de enriquecimiento, y se lleva a cabo la destilación a una presión situada en el intervalo comprendido entre 0,1 y 2,5 bares, obteniéndose una corriente B1, que está enriquecida en trioxano, y la corriente B2, que está constituida esencialmente por agua y por formaldehído; c) la corriente B1 se alimenta a una segunda columna de destilación y se lleva a cabo la destilación a una presión situada en el intervalo comprendido 0,2 y 17,5 bares, obteniéndose una corriente de producto C2, que está constituida esencialmente por trioxano, y una corriente C1, que contiene trioxano, agua y formaldehído; d) la corriente C1 se alimenta a una tercera columna de destilación y se lleva a cabo la destilación a una presión situada en el intervalo comprendido entre 1 y 10 bares, obteniéndose la corriente de reciclo D1, que contiene trioxano, agua y formaldehído, y una corriente D2 que está constituida esencialmente por agua.

公开(公告)号：AT424905T

公开(公告)日：2009-03-15

申请号：AT06112810

申请日：2004-03-03

Applicant: BASF SE

Inventor： STROEFER ECKHARD ,  LANG NEVEN ,  LICHTFERS UTE ,  STEINBRENNER ULRICH ,  HASSE HANS

IPC: B01D1/22 ,  B01D1/30 ,  C08G2/08

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.

公开(公告)号：DE502006002395D1

公开(公告)日：2009-01-29

申请号：DE502006002395

申请日：2006-08-01

Applicant: BASF SE

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, 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 in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 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 B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 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 C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 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 D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

公开(公告)号：DE502006002339D1

公开(公告)日：2009-01-22

申请号：DE502006002339

申请日：2006-06-12

Applicant: BASF SE

Inventor： STROEFER ECKHARD ,  HASSE HANS ,  BLAGOV SERGEJ

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：AT389628T

公开(公告)日：2008-04-15

申请号：AT04717071

申请日：2004-03-04

Applicant: BASF SE

Inventor： STROEFER ECKHARD ,  LANG NEVEN ,  HASSE HANS ,  GRUETZNER THOMAS ,  OTT MICHAEL

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/82

Abstract: Process for preparing high-concentration formaldehyde solutions having a CH 2 O content of >=50% by weight from an aqueous formaldehyde solution having a lower CH 2 O 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.] max [° C.] where T max (c)=A+Bx(c/100)+Cx(c/100) 2 +Dx(c/100) 3 and A=+68.759, B=+124.77, C=-12.851, D=-10.095, where c is the instantaneous CH 2 O content of the aqueous formaldehyde solution during the evaporation in percent by weight and is from 20 to 99% by weight.

公开(公告)号：MXPA06007121A

公开(公告)日：2006-10-01

申请号：MXPA06007121

申请日：2006-06-21

Applicant: BASF SE

Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  HASSE HANS

IPC: 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.

公开(公告)号：CA2764255A1

公开(公告)日：2010-12-29

申请号：CA2764255

申请日：2010-06-21

Applicant: BASF SE

Inventor： GARCIA ANDARCIA HUGO RAFAEL ,  NOTZ RALF ,  SIEDER GEORG ,  SPUHL OLIVER ,  HASSE HANS ,  TOENNIES INGA ,  HOCH SEBASTIAN ,  MANGALAPALLY HARI PRASAD

IPC: B01D53/14

Abstract: A process for removing acidic gases from a fluid stream, in which a) the fluid stream is treated with an absorption liquid which comprises at least one amine, a stripping aid and water, said stripping aid being selected from water-miscible liquids whose boiling temperature at standard pressure is lower than that of water, b) the treated fluid stream is treated with a liquid aqueous phase in order to transfer entrained stripping aid at least partly to the aqueous phase, c) the laden aqueous phase is heated in order to at least partly drive out the stripping aid, and d) the aqueous phase thus regenerated is cooled and recycled at least partly into step b). The stripping aid promotes the regeneration of the absorbent by stripping. Emissions of the stripping aid via the treated fluid stream are avoided by washing the treated fluid stream with a liquid aqueous phase.