Procedimiento para la purificación de polimetiloles

    公开(公告)号:ES2599328T3

    公开(公告)日:2017-02-01

    申请号:ES09764533

    申请日:2009-12-07

    Applicant: BASF SE

    Abstract: Procedimiento para la destilación de una mezcla acuosa de polimetilol, que contiene un polimetilol de fórmula (I),**Fórmula** en la que R significa en cada caso independientemente entre sí otro grupo metilol o un grupo alquilo con 1 a 22 átomos de C o un grupo arilo o aralquilo con 6 a 22 átomos de C, una amina terciaria, agua así como el aducto de amina terciaria y ácido fórmico (formiato de amina), caracterizado porque la destilación se realiza en una columna de destilación que está conectada en el fondo con un evaporador, encontrándose la temperatura de fondo por encima de la temperatura de evaporación del mono-éster que se forma durante la destilación de ácido fórmico y polimetilol (formiato de polimetilol).

    Procedimiento para la preparación de polimetiloles

    公开(公告)号:ES2494418T3

    公开(公告)日:2014-09-15

    申请号:ES10700515

    申请日:2010-01-07

    Applicant: BASF SE

    Abstract: Procedimiento para la recuperación de componentes de una mezcla de compuestos de bajo punto de ebullición, que se produce en la destilación de descargas de hidrogenación procedentes de la fabricación de polimetiloles, mediante destilación en varias etapas de la mezcla de compuestos de bajo punto de ebullición, que contiene amina, agua terciaria, metanol, polimetilol de la fórmula (I), metilolalcanal de la fórmula (II) alcohol de la fórmula (III), y un alcanal con un grupo metileno en la posición - respecto al grupo carbonilo, y en la que R, en cada caso independientemente uno de otro, significa otro grupo metilol o un grupo alquilo con 1 a 22 átomos de C o un grupo arilo o aralquilo con 6 a 22 átomos de C, en el que en una primera etapa de destilación se realiza una separación de la mezcla de compuestos de bajo punto de ebullición en una fracción, de punto de ebullición más elevado, predominantemente rica en agua, y en una fracción orgánica acuosa de bajo punto de ebullición que contiene amina terciaria, y en la segunda etapa de destilación, la fracción orgánica acuosa de la primera etapa de destilación se separa en una fracción que contiene predominantemente amina y otra fracción empobrecida en amina, caracterizado por que la amina terciaria es trimetilamina o trietilamina y la temperatura del fondo en la segunda etapa de destilación es 110 ºC y superior.

    METHOD FOR PRODUCING FORMIC ACID BY REACTING CARBON DIOXIDE WITH HYDROGEN

    公开(公告)号:SG191102A1

    公开(公告)日:2013-07-31

    申请号:SG2013044896

    申请日:2011-12-15

    Applicant: BASF SE

    Abstract: 40Method for producing formic acid by reacting carbon dioxide with hydrogenAbstract5The present invention relates to a process for preparing formic acid by reacting carbon dioxide (1) with hydrogen (2) in a hydrogenation reactor (I) in the presence ofa catalyst comprising an element of group 8, 9 or 10 of the Periodic Table,10 - a tertiary amine comprising at least 12 carbon atoms per molecule anda polar solvent comprising one or more monoalcohols selected from amongmethanol, ethanol, propanols and butanols,to form formic acid/amine adducts as intermediates which are subsequently thermally 15 dissociated,where a tertiary amine having a boiling point which is at least 5°C higher than that of formic acid is used anda reaction mixture comprising the polar solvent, the formic acid/amine adducts, the tertiary amine and the catalyst is formed in the reaction in the hydrogenation reactor (I) 20 and is discharged from the reactor as output (3). (Figure 1)

    METHOD FOR PRODUCING FORMIC ACID
    28.
    发明专利

    公开(公告)号:SG186264A1

    公开(公告)日:2013-01-30

    申请号:SG2012090742

    申请日:2011-06-28

    Applicant: BASF SE

    Abstract: 40Method for producing formic acid Abstract5 Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid and a tertiary amine (1) in a molar ratio of from 0.5 to 5 is produced by combining tertiary amine (I) and a formic acid source, from 10 to 100% by weight of the secondary components present therein are separated off and formic acid is removed by distillation in a distillation apparatus at a bottom temperature of from10 100 to 300°C and a pressure of from 30 to 3000 hPa abs from the liquid stream obtained, the bottom discharge from the distillation apparatus being separated into two liquid phases and the upper liquid phase being recycled to the formic acid source and the lower liquid phase being recycled for separating off the secondary components and/or to the distillation apparatus. Figure 1A

    PROCESS FOR PREPARING FORMIC ACID BY REACTION OF CARBON DIOXIDE WITH HYDROGEN

    公开(公告)号:SG186045A1

    公开(公告)日:2013-01-30

    申请号:SG2012016366

    申请日:2011-06-16

    Applicant: BASF SE

    Abstract: Process for preparing formic acid by reaction of carbon dioxide with hydrogen Abstract 5 A process for preparing formic acid by reaction of carbon dioxide (1) with hydrogen (2)in a hydrogenation reactor (I) in the presence ofa catalyst comprising an element of group 8, 9 or 10 of the Periodic Table, a tertiary amine comprising at least 12 carbon atoms per molecule and 10 a polar solvent comprising one or more monoalcohols selected from among methanol, ethanol, propanols and butanols and also water,to form formic acid/amine adducts as intermediates which are subsequently thermally dissociated, with work-up of the output (3) from the hydrogenation reactor (I) in a 15 plurality of process steps, wherea tertiary amine-comprising stream (13) from the work-up is used as selective solvent for the catalyst, is proposed.20(Figure 1)

    METHOD FOR PRODUCING FORMIC ACID
    30.
    发明专利

    公开(公告)号:SG176855A1

    公开(公告)日:2012-01-30

    申请号:SG2011092731

    申请日:2010-06-11

    Applicant: BASF SE

    Abstract: Method for producing formic acid AbstractProcess for prepering formic acid by hydrogenation of carbondioxide in the presence of a catalyst comprising an element of group 8, 9 or 10 of the Periodic Table, a teritary amine and a polar solvent at a pressure of from 0,2 to 30 MPs abs and a temperature of from 20 to 200°C to form two liquid phases, separation of the two liquid phases, wherein the liquid phase (B) enriched with the tertiary amine is recirculated to the 10 hydrogenation reactor and the formic aciduct from the liquid phase (A) enriched with the formic acid/amine adduct and the polar solvent is thermally dissociated into free formic add and free tertiary amine in a distillation unit and the tertiary amine liberated in the dissociation and the polar solvent are recirculated to the hydrogenation reactor. Figure 1

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