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    PACKING STRUCTURE FOR HEAT EXCHANGE AND MASS TRANSFER
    12.
    发明专利
    PACKING STRUCTURE FOR HEAT EXCHANGE AND MASS TRANSFER 失效

    公开(公告)号：JP2001162160A

    公开(公告)日：2001-06-19

    申请号：JP2000224857

    申请日：2000-07-26

    Applicant: BASF AG

    Inventor： KAIBEL GERD DR ,  STROEZEL MANFRED ,  STAMMER ACHIM

    IPC: B01J19/30 ,  B01J19/32 ,  B01J35/02 ,  F28C3/08

    Abstract: PROBLEM TO BE SOLVED: To provide a packing structure capable of increasing the capacity and economical effect of the heat exchange and mass transfer. SOLUTION: At least one packing layer 1 having a first lower end 2 and a second upper end 3 is provided, and the packing layer has an internal geometrical pattern with the height between the lower and upper ends varied. Accordingly, a bubble layer having a gas phase with the dispersed state preferential is formed as desired by appropriately setting the flow velocity of the liquid and gas in the first, especially the lower, zone 6 of the layer 1, and a thin liquid laminar flow having a gas phase with the continuous state preferential is formed as required in the second, especially the upper, zone 7 of the layer 1 at the same time. A packing structure for the heat exchange and mass transfer between liquid and gas in a column provided with at least the one packing layer 1 is obtained in this way.

    SELECTIVE LIQUID-PHASE HYDROGENATION OF ALPHA, BETA-UNSATURATED CARBONYL COMPOUND
    13.
    发明专利
    SELECTIVE LIQUID-PHASE HYDROGENATION OF ALPHA, BETA-UNSATURATED CARBONYL COMPOUND 失效

    公开(公告)号：JPH11349517A

    公开(公告)日：1999-12-21

    申请号：JP9491399

    申请日：1999-04-01

    Applicant: BASF AG

    Inventor： BROECKER FRANZ JOSEF DR ,  KAIBEL GERD DR ,  AQUILA WERNER ,  FUCHS HARTWIG ,  WEGNER GUENTER DR ,  STROEZEL MANFRED

    IPC: B01J23/44 ,  B01J8/20 ,  B01J8/22 ,  B01J19/24 ,  B01J23/46 ,  C07B61/00 ,  C07C45/62 ,  C07C47/21 ,  C07C49/04

    Abstract: PROBLEM TO BE SOLVED: To carry out the hydrogenation of especially citral to citronellal at a low cost by an economical process having improved space-time yield and reduced investment cost by hydrogenating an α,β-unsaturated carbonyl compound in liquid phase under specific condition. SOLUTION: A compound of formula II is produced by the hydrogenation of an α,β-unsaturated carbonyl compound of formula I (R1 is H or an organic group; R2 to R4 are each H or a 1-4C alkyl) with hydrogen in the presence of powdery palladium and/or rhodium and an organic group while performing the regeneration of the product and the circulation of hydrogen gas in a bubble packed column reactor. The packing material in the bubble column reactor preferably has a hydraulic diameter of 0.5-20 mm and a surface roughness of 0.1 to 10 times the average particle diameter of the powdery catalyst particles at the opening or the channel wall part of the packing material and is made of a metallic material, a plastic material, etc.

    PRODUCTION OF CITRAL
    16.
    发明专利
    PRODUCTION OF CITRAL 失效

    公开(公告)号：JP2000119211A

    公开(公告)日：2000-04-25

    申请号：JP28441399

    申请日：1999-10-05

    Applicant: BASF AG

    Inventor： THERRE JOERG DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  WEGNER GUENTER ,  FUCHS HARTWIG

    IPC: B01J27/16 ,  C07B61/00 ,  C07C41/28 ,  C07C43/15 ,  C07C45/37 ,  C07C45/51 ,  C07C45/54 ,  C07C45/67 ,  C07C47/21 ,  C07C49/203

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing citral in a high yield by continuously distilling out formed intermediate compounds, such as prenol, as well as the citral from a reaction mixture during reactions, and heating the intermediate compounds at a specified temperature, when a specific acetal is thermally decomposed to form the prenol and the dienyl ether, and then the formed ether is subjected to Claisen rearrangement and subsequently to Cope rearrangement. SOLUTION: This method for producing citral of formula V comprises thermally decomposing (A) 3-methyl-2-buten-1-al-diprenyl acetal of formula I, if necessary, in the presence of an acidic catalyst, to form (B) prenol of formula II and (C) a compound of formula III, subjecting the formed compound of formed III to Claisen rearrangement to obtain (D) formylhexadiene of formula IV, and subsequently subjecting the obtained compound to Cope rearrangement. Therein, the characteristics comprise continuously distilling out the formed intermediate compounds of the component B, the component C and the component D as well as the objective citral from the reaction mixture during the above reactions, and heating the prenol and, if necessary, the intermediate compounds of the component C and D at 100-200 deg.C.

    METHOD TO REACT GRIGNARD COMPOUND WITH CARBONYL COMPOUND AND TO HYDROLIZE PRODUCT THEREAFTER
    18.
    发明专利
    METHOD TO REACT GRIGNARD COMPOUND WITH CARBONYL COMPOUND AND TO HYDROLIZE PRODUCT THEREAFTER 失效

    公开(公告)号：JPH10130179A

    公开(公告)日：1998-05-19

    申请号：JP28952597

    申请日：1997-10-22

    Applicant: BASF AG

    Inventor： STROEZEL MANFRED ,  RHEUDE UDO DR ,  RAHN RALF-THOMAS DR ,  KAIBEL GERD DR

    IPC: C07B49/00 ,  C07C29/124 ,  C07C29/40 ,  C07C31/00 ,  C07C33/02

    Abstract: PROBLEM TO BE SOLVED: To provide an improved method that enables to carry out, addition reaction between a Grignard compound and a carbonyl compound and the subsequent hydrolysis, without any trouble with respect to the plant-operation. SOLUTION: This method removes almost all the heat that is generated during exothermic reaction(s) of (a) an addition reaction between a halogenated organomagnesium compound shown by the formula RMgX (R is a 1-6C alkyl, 2-6C alkenyl, 2-6C alkynyl, or an aryl; X is Cl, Br, or I) and a carbonyl compound and/or (b) a hydrolysis of the resulting addition product, by carrying out at least one of these reactions in a solvent or a mixture of solvents and evaporating the solvent or the mixture of solvents.

    COLUMNA CON PARED SEPARADORA PARA LA SEPARACION DE UNA MEZCLA DE VARIOS PRODUCTOS.
    19.
    发明专利
    COLUMNA CON PARED SEPARADORA PARA LA SEPARACION DE UNA MEZCLA DE VARIOS PRODUCTOS. 未知

    公开(公告)号：ES2286047T3

    公开(公告)日：2007-12-01

    申请号：ES01103686

    申请日：2001-02-23

    Applicant: BASF AG

    Inventor： BURST WOLFRAM ,  HARTMANN HORST ,  KAIBEL GERD DR ,  HARMS GUIDO DR

    IPC: B01D3/14

    Abstract: Columna con pared separadora, que está subdividida en la zona central por medio de una pared separadora (7, 8) en una parte de alimentación y en una parte de descarga, que presenta como segmentos, a) una zona superior de la columna (1), b) una sección de rectificación (2) de la parte de alimentación, c) una sección de agotamiento (4) de la parte de alimentación, d) una parte superior (3) de la parte de descarga, e) una parte inferior (5) de la parte de descarga, f) una zona intermedia (9) de la parte de alimentación, g) una zona intermedia (10) de la parte descarga y h) una zona inferior de la columna (6), estando dispuesta verticalmente la pared separadora (7) entre los segmentos b) (2) y d) (3) así como entre los segmentos c) (4) y e) (5), presentando apliques con actividad separadora los segmentos b) (2), d) (3), c) (4) y e) (5) y siendo la superficie en sección transversal Ab del segmento b) (2) al menos 10 % menor que la superficie de la sección transversal Ad del segmento d) (3), asícomo la superficie en sección transversal Ac del segmento c) (4) es mayor en un 10 % al menos que la superficie en sección transversal Ae del segmento e) (5).

    PROCEDIMIENTO PARA LA HIDROGENACION SELECTIVA DE COMPUESTOS CARBONILADOS, OLEFINICAMENTE INSATURADOS.
    20.
    发明专利
    PROCEDIMIENTO PARA LA HIDROGENACION SELECTIVA DE COMPUESTOS CARBONILADOS, OLEFINICAMENTE INSATURADOS. 未知

    公开(公告)号：ES2283501T3

    公开(公告)日：2007-11-01

    申请号：ES02027069

    申请日：2002-12-03

    Applicant: BASF AG

    Inventor： GOBBEL HANS-GEORG DR ,  GERLACH TILL DR ,  FUNKE FRANK DR ,  EBEL KLAUS DR ,  UNVERRICHT SIGNE DR ,  KAIBEL GERD DR

    IPC: C07C29/141 ,  C07B61/00 ,  C07C33/03

    Abstract: Procedimiento para la hidrogenación selectiva de compuestos carbonilados a, a-insaturados de la fórmula general I, en la que R1, R2 pueden ser respectivamente iguales o diferentes, independientemente entre sí y significan hidrógeno o un resto alquilo con 1 hasta 20 átomos de carbono mono o poliinsaturado, de cadena lineal o de cadena ramificada, en caso dado substituido, un resto arilo substituido en caso dado o un grupo heterocíclico substituido en caso dado, significando los restos, en tanto en cuanto estén presentes, restos metilo, etilo, propilo, i-propilo, butilo, t-butilo, flúor, cloro, bromo, yodo, nitro o amino, y R3 significa hidrógeno o un resto alquilo con 1 hasta 4 átomos de carbono, para dar los correspondientes alcoholes insaturados de la fórmula general II en la que R1, R2 y R3 tienen el significado anteriormente indicado, en un reactor, que contiene una fase líquida, en la que está suspendido, al menos, un catalizador y que puede contener, en caso dado, una fase gaseosa adicional, caracterizado porque la fase líquida y, en caso dado, la fase gaseosa se conducen en el reactor por medio de un dispositivo con orificios o con canales, cuyo diámetro hidráulico está comprendido entre 0, 5 y 20 mm, y porque se emplean partículas suspendidas del catalizador con un tamaño medio de grano desde 0, 0001 hasta 2 mm.

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