11.
    发明专利
    未知

    公开(公告)号:DE502005001422D1

    公开(公告)日:2007-10-18

    申请号:DE502005001422

    申请日:2005-01-07

    Applicant: BASF AG

    Abstract: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region ( 2 ), a lower combined column region ( 3 ), a feed section ( 4 ) having a rectifying section ( 5 ) and stripping section ( 6 ), and also a withdrawal section ( 7 ) having a rectifying section ( 9 ) and stripping section ( 8 ), which comprises the following steps: a. feeding the reactant stream ( 13 ) into the feed section ( 4 ) of the dividing wall column ( 1 ); b. drawing off a low boiler fraction via the top of the column ( 11 ); c. drawing off TDA via a side draw ( 14 ) in the withdrawal section ( 7 ) of the dividing wall column ( 1 ); d. drawing off a low boiler fraction via the bottom of the column ( 12 ).

    PROCEDIMIENTO PARA LA SEPARACION Y PURIFICACION DE DISOLVENTES DE UNA MEZCLA DE REACCION RESULTANTE DE UNA SINTESIS DE ISOCIANATO.

    公开(公告)号:ES2270145T3

    公开(公告)日:2007-04-01

    申请号:ES03785813

    申请日:2003-12-13

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de isocianatos mediante reacción de aminas con fosgeno en presencia de disolventes orgánicos inertes en un reactor, y subsiguiente elaboración de la mezcla de reacción que abandona el reactor, caracterizado porque la separación de disolventes se efectúa en un procedimiento de destilación de dos o más etapas, y separándose el disolvente en una primera instalación a una presión de 0, 1 a 15 bar, y en una segunda instalación, o instalación adicional, a 1 hasta 900 mbar, siendo el nivel de presión en la segunda instalación más reducido que en la primera instalación; situándose la temperatura de cola de la primera columna, según presión, entre 60ºC a 0, 1 bar y 270ºC a 15 bar, y la de la segunda columna, según presión, entre 75ºC a 1 mbar y 250ºC a 900 mbar, y empleándose el calor de condensación del vapor de disolvente de la primera instalación para la evaporación parcial o completa de disolvente en la segunda instalación.

    14.
    发明专利
    未知

    公开(公告)号:BR0213904A

    公开(公告)日:2004-08-31

    申请号:BR0213904

    申请日:2002-11-05

    Applicant: BASF AG

    Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

    Highly concentrated formaldehyde solution, production and reaction thereof

    公开(公告)号:AU2002351846A1

    公开(公告)日:2003-05-19

    申请号:AU2002351846

    申请日:2002-11-05

    Applicant: BASF AG

    Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

    HIGHLY CONCENTRATED FORMALDEHYDE SOLUTION, PRODUCTION AND REACTION THEREOF

    公开(公告)号:HU228580B1

    公开(公告)日:2013-04-29

    申请号:HU0402363

    申请日:2002-11-05

    Applicant: BASF AG

    Abstract: In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of >=65% by weight, the mean molar mass {overscore (M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 . 10 - 1 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 . 10 2 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 . 10 - 3 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 . 10 - 5 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 . 10 6 . ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 . 10 - 9 . ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: {overscore (M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

    20.
    发明专利
    未知

    公开(公告)号:DE102005040286A1

    公开(公告)日:2007-03-01

    申请号:DE102005040286

    申请日:2005-08-25

    Applicant: BASF AG

    Abstract: An oxidation process employing a mechanically stable catalyst of an active metal or combination of active metals supported on aluminum oxide, which is predominantly alpha-aluminum oxide, is provided. The active metal or metals is optionally one or a mixture of ruthenium, copper, gold, an alkaline earth metal, an alkali metal, palladium, platinum, osmium, iridium, silver, and rhenium. The process is applicable to the oxidation of hydrogen chloride to chlorine in a Deacon process.

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