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    Treatment of wastewater from an aldolization process comprises acidifying the wastewater and extracting it with an organic liquid produced by stripping the acidified or acidified and extracted wastewater
    2.
    发明专利
    Treatment of wastewater from an aldolization process comprises acidifying the wastewater and extracting it with an organic liquid produced by stripping the acidified or acidified and extracted wastewater 未知

    公开(公告)号：DE102005047460A1

    公开(公告)日：2007-04-05

    申请号：DE102005047460

    申请日：2005-09-30

    Applicant: BASF AG

    Inventor： MAASEN SIEGMAR ,  KROKOSZINSKI ROLAND ,  KRATZ DETLEF

    IPC: C02F1/26

    Abstract: Treatment of wastewater from an aldolization process, containing dissolved and/or dispersed organic impurities, comprises acidifying the wastewater to pH 0-6 and extracting it with an organic liquid produced by stripping the acidified or acidified and extracted wastewater, condensing the stripped compounds and phase-separating the condensate. An independent claim is also included for treatment of wastewater from an aldolization process, containing dissolved and/or dispersed organic impurities, by acidifying the wastewater to pH 0-6, extracting it with an organic liquid and removing volatile organic impurities and a stripping apparatus, where the organic liquid is a low boiler fraction from the distillation of a crude alcohol produced by hydrogenating an aldehyde, the alcohol/aldehyde being n-butanol/n-butyraldehyde, isobutanol/isobutyraldehyde, n-pentanol/n-valeraldehyde, n- and isopentanol/n- and isovaleraldehyde, 2-ethylhexanol/2-ethylhexenal and/or 2-propylheptanol/2-propylheptenal.

    4.
    发明专利
    未知

    公开(公告)号：DE59708146D1

    公开(公告)日：2002-10-10

    申请号：DE59708146

    申请日：1997-12-04

    Applicant: BASF AG

    Inventor： KRATZ DETLEF ,  STAMMER ACHIM ,  SCHULZ GERHARD ,  VOIT GUIDO

    IPC: C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22 ,  C07C45/75 ,  C07C47/19

    Abstract: Methylolalkanal of the formula II(R=CH2OH, C1-C22-alkyl, aryl or C6-C22-aralkyl) is prepared spe-wise bya) reacting a C2-C24-aldehyde with formaldehyde in the presence of a tertiary amine,b) separating the reaction mixturei) into a bottom fraction comprising the compound of formula II and an incompletely methylolated compound of the formula IIIand a distillate stream comprising unconverted or partially converted starting materials, orii) into an aqueous phase and an organic phase, and recycling the distillate stream or the organic phase to a), andc) subjecting the bottom fraction or the aqueous phasei) to a catalytic or thermal reaction to convert the compound of formula III to the compound of formula II and to a corresponding methylene compound of formula IV(R'=H or R) andii) separating the reaction product into an overhead stream comprising the compound of formula IV and unconverted formaldehyde which is recycled to a), and a bottom fraction comprising the compound of formula II.

    5.
    发明专利
    未知

    公开(公告)号：BR0016759A

    公开(公告)日：2002-09-24

    申请号：BR0016759

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

    IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22 ,  C07C29/141

    Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.

    PROCEDIMIENTO PARA LA PURIFICACION MEDIANTE DESTILACION CONTINUA DE TRIMETILOLPROPANO, OBTENIDO POR HIDROGENACION.
    10.
    发明专利
    PROCEDIMIENTO PARA LA PURIFICACION MEDIANTE DESTILACION CONTINUA DE TRIMETILOLPROPANO, OBTENIDO POR HIDROGENACION. 未知

    公开(公告)号：ES2266015T3

    公开(公告)日：2007-03-01

    申请号：ES00985231

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

    IPC: C07C29/80 ,  C07B61/00 ,  C07C29/141 ,  C07C31/22

    Abstract: Procedimiento para la destilación de purificación de trimetilolpropano procedente de la hidrogenación de 2, 2-dimetilolbutanal, que presenta las etapas siguientes: a) reacción de n-butiraldehído con formaldehído en presencia de cantidades catalíticas de una amina terciaria e hidrogenación de la mezcla obtenida de este modo para dar una mezcla que contiene trimetilolpropano; b) separación por destilación del agua, del metanol, de la trialquilamina y/o del formiato de trialquilamonio a presiones > 200 mbares, preferentemente > 400 mbares, temperaturas en la cola > 140ºC, preferentemente desde 160 hasta 180ºC, así como tiempos de residencia prolongados, que se lleva a cabo de tal manera que al menos la parte preponderante del TMP con el formiato de trialquilamonio, formado en la etapa (a) reaccione para dar formiatos de TMP que permanecen en la cola y trialquilamina que se elimina por destilación con agua y con metanol, c) calentamiento del residuo, obtenido en b) en vacío a una temperatura,a la que sea volátil el trimetilolpropano y se disocien al menos parcialmente los compuestos con un punto de ebullición mayor que el del trimetilolpropano, con separación mediante destilación del trimetilolpropano así como de los compuestos más fácilmente volátiles que el trimetilolpropano; d) destilación del destilado, obtenido en c) y separación de los compuestos fácilmente volátiles y obtención de TMP puro; e) destilación facultativa del trimetilolpropano, obtenido en d), para la obtención de TMP con un menor índice de color APHA.

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