公开(公告)号：AU2002358636A1

公开(公告)日：2003-06-17

申请号：AU2002358636

申请日：2002-12-06

Applicant: BASF AG

Inventor： SIRCH TILMAN ,  KAIBEL GERD ,  WARTINI ALEXANDER ,  DERNBACH MATTHIAS

IPC: C07C29/38 ,  C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22

Abstract: Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.

公开(公告)号：AU2002358098A1

公开(公告)日：2003-06-17

申请号：AU2002358098

申请日：2002-12-05

Applicant: BASF AG

Inventor： DOBLER WALTER ,  DIRNSTEINER THOMAS ,  SIGL MARCUS ,  JANSEN HELMUT ,  KAIBEL BJORN ,  KAIBEL GERD ,  MILLER CHRISTIAN

IPC: B01D3/26 ,  B01D3/00 ,  B01J8/00 ,  B01J8/02 ,  B01J8/04 ,  B01J8/12 ,  B01J19/24 ,  B01J19/32 ,  B01J21/04 ,  B01J23/10 ,  B01J35/02 ,  C07B61/00 ,  C07C45/72 ,  C07C45/74 ,  C07C49/203 ,  C07C45/28

Abstract: A column is described for carrying out reactive distillations in the presence of a heterogeneous particulate catalyst having an ordered packing or random packings which form intermediate spaces in the column interior, the quotient of the hydraulic diameter for the gas flow through the ordered packing or the random packings and the equivalent diameter of the catalyst particles being in the range from 2 to 20, preferably in the range from 5 to 10, in such a manner that the catalyst particles are introduced into the intermediate spaces, distributed and discharged loose under the action of gravity.

公开(公告)号：DE10131260A1

公开(公告)日：2003-01-09

申请号：DE10131260

申请日：2001-06-29

Applicant: BASF AG

Inventor： SALDEN AXEL ,  MASSONNE KLEMENS ,  KAIBEL GERD

IPC: C08K5/12 ,  C07C67/08 ,  C07B41/08 ,  C07C51/09 ,  C07C61/08 ,  C07C67/303 ,  C07C69/75

Abstract: Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of the esters; and (C) hydrogenation to the corresponding cyclohexane derivative in either order. Preparation of alkyl (un)substituted cyclohexane dicarboxylic acids or corresponding derivatives (I) comprises: (A) reaction of a diene-maleic acid anhydride mixture to form an alkyl (un)substituted cyclohexene dicarboxylic acid anhydride in the condensed phase; (B) formation of an ester of an alkyl substituted or unsubstituted cyclohexene dicarboxylic acid anhydride; and (C) hydrogenation of the ester from step (B) to the corresponding cyclohexane derivative or (B') hydrogenation of the alkyl (un)substituted cyclohexene dicarboxylic acid anhydride from step (A), followed by (C') formation of an ester from the cyclohexane dicarboxylic acid anhydride from step (B'). Independent claims are also included for the following: (1) a mixture (II) of alkyl (un)substituted cyclohexane dicarboxylic acids or derivatives (I); and (2) a process for the separation of butadiene from butadiene containing hydrocarbon streams comprises: (i) reaction of the hydrocarbon stream with maleic acid anhydride; and (ii) separation of the resulting cyclohexene dicarboxylic acid anhydride from the remaining hydrocarbons.

公开(公告)号：DE10124386A1

公开(公告)日：2002-11-28

申请号：DE10124386

申请日：2001-05-18

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  KAIBEL GERD ,  STAMMER ACHIM ,  OOST CARSTEN ,  SOHN MARTIN ,  STROEZEL MANFRED ,  DOBLER WALTER

IPC: B01D3/26 ,  B01D3/00 ,  B01J19/32 ,  C07B63/00 ,  C07C17/38 ,  C07C263/20 ,  C07C265/14 ,  C07C17/383

Abstract: Column with packing is used for distillation/reactive distillation of mixture with toxic component(s). Packing layer(s) has upper and lower end, with variable internal geometry over height (H). Lower zone (6) of packing layer, with higher flow resistance, gives bubbling layer with mainly dispersed gas phase and upper zone (7) develops film flow with mainly continuous gas phase. Column with a packing is used for the distillation or reactive distillation of a mixture, with at least one toxic component. At least one packing layer has an upper and a lower end, with a variable internal geometry over its height (H). The lower zone (6) of the packing layer, with a higher flow resistance, gives a bubbling layer with a mainly dispersed gas phase and, at the same time, the upper zone (7) develops a film flow with a mainly continuous gas phase.

公开(公告)号：DE59902731D1

公开(公告)日：2002-10-24

申请号：DE59902731

申请日：1999-11-13

Applicant: BASF AG

Inventor： OOST CARSTEN ,  STROEZEL MANFRED ,  ETZRODT HEINZ ,  WELLER DIETMAR ,  RHEUDE UDO ,  KAIBEL GERD ,  KRUG THOMAS ,  SPISKE LUISE ,  JAEDICKE HAGEN

IPC: B01J31/14 ,  C07B61/00 ,  C07C45/67 ,  C07C45/74 ,  C07C49/203

Abstract: Preparation of unsaturated ketones by reaction of the corresponding alpha , beta -unsaturated alcohol with an alkyl acetoacetate compound in the presence an organo-aluminum catalyst at constant temperature, with separation and continuous removal of CO2 and alcohol formed. Preparation of unsaturated ketones of formula (I) by reaction of the corresponding alpha , beta -unsaturated alcohol of formula (II) with an alkyl acetoacetate compound of formula (III) in the presence of 0.1-5 mole% (based on (III)) of an organo-aluminum catalyst with separation and continuous distillative removal of CO2 and alcohol of formula R3OH formed during reaction, in a reactor containing a fractionation column, where: (A) (II) is added to the reaction mixture together with the organic catalyst without additional solvent and (III) is then added to this mixture; (B) the reaction temperature is kept constant between 175-220 degrees C; (C) the content of (III) is kept at a constant level between 0.1-10 wt.% during the reaction. R1, R3 = 1-4C alkyl; R2 = 4-30C aliphatic, cycloaliphatic or cycloaliphatic-aliphatic; a, b = optional additional bonds.

公开(公告)号：DE10100552A1

公开(公告)日：2002-07-11

申请号：DE10100552

申请日：2001-01-09

Applicant: BASF AG

Inventor： GALL MARTIN ,  KAIBEL GERD ,  KRUG THOMAS ,  RUST HARALD ,  STEIN FRANK

IPC: C07D309/30 ,  B01D3/14 ,  C07C29/80 ,  C07C31/20 ,  C07D315/00 ,  C07D313/04 ,  C07B63/00 ,  B01D3/00

Abstract: The invention relates to a method for the distillative processing of the crude products 1,6-hexandiols (HDO), 1,5-pentandiol (PDO) or caprolactone (CLO) obtained according to the method of German patent application DE-A 196 07 954 in order to obtain the corresponding pure products. The distillative processing proceeds in a separation column (TK) in which a separating wall (T) is arranged in the column longitudinal direction forming an upper common column section (1), a lower common column section (6), a feed part (2, 4) with reinforcement part (2) and drive part (4), and a removal part (3, 5) with output part (3) and reinforcement part (5). The corresponding crude product HDO, PDO or CLO is fed in the center section of the feed part (2, 4), the high-boiling fraction (C) is removed from the column sump, the low-boiling fraction (A) is removed via the column head and the medium-boiling fraction (B) is removed from the center section of the removal part (3, 5). The inventive method can also be carried out in thermally coupled columns.

公开(公告)号：DE10061557A1

公开(公告)日：2002-06-13

申请号：DE10061557

申请日：2000-12-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  STEIN FRANK ,  RAHN RALF-THOMAS ,  WECK ALEXANDER ,  KAIBEL GERD

IPC: C07B61/00 ,  C07D307/08 ,  C07D307/33 ,  C07B41/00

Abstract: The invention relates to a method for the gas phase hydrogenation of C4 dicarboxylic acids and/or derivatives thereof to give optionally substituted gamma -butyrolactone and/or tetrahydrofuran on a catalyst, based on copper oxide, comprising a first reaction zone, in which the C4 dicarboxylic acid and/or derivatives thereof react to give a mixture mainly containing optionally substituted gamma -butyrolactone and a second zone connected thereto in which the optionally substituted gamma -butyrolactone contained in the mixture from the first hydrogenation stage is reacted to give optionally substituted tetrahydrofuran at a temperature which is lower than the temperature in the first hydrogenation step.

公开(公告)号：DE10031119A1

公开(公告)日：2002-01-10

申请号：DE10031119

申请日：2000-06-30

Applicant: BASF AG

Inventor： KAIBEL GERD ,  STAMMER ACHIM ,  STROEZEL MANFRED

IPC: B01J19/32

Abstract: In zig-zag sheet metal column packing, a proportion X of the openings has a spacing b which is no greater than 0.4a from a fold edge. The proportion X is at least 60%. Preferred Features: X is at least 80% or 90%. Dimension b is 0.3a or 0.2a at most. The angle of folding is 40-120 degrees , preferably 60-90 degrees . Openings take up 5-40%, preferably 10-20% of the folded area. Openings are rectangular with aspect ratio 5:1 to 1:1, preferably 3:1 to 2:1. The longer side of the opening, is parallel to the folded edges. In a packed column, folded edges of the packing include an angle of 20-70 degrees , preferably 30-45 degrees with the column axis.

公开(公告)号：DE19936276A1

公开(公告)日：2001-02-08

申请号：DE19936276

申请日：1999-08-02

Applicant: BASF AG

Inventor： BROECKER FRANZ-JOSEF ,  HAAKE MATHIAS ,  KAIBEL GERD ,  ROHRBACHER GERD ,  SCHWAB EKKEHARD ,  STROEZEL MANFRED

IPC: B01J23/42 ,  B01J8/00 ,  B01J10/00 ,  B01J19/24 ,  B01J19/26 ,  B01J32/00 ,  B01J35/04 ,  B01J35/06 ,  C07B61/00 ,  C07C5/10 ,  C07C13/18 ,  F28D9/04 ,  B01F13/00

Abstract: The apparatus for carrying out reactions in the gaseous, liquid and solid phases comprises a liquid stream-gas compressor for producing a reaction fluid, a reactor charged with metal braiding coated with catalyst, and a feed line. The apparatus for carrying out reactions in the gaseous, liquid and solid phases comprises a liquid stream-gas compressor (6) for producing a reaction fluid by dispersing a gas phase in a liquid phase; a reactor (1) having an inlet and an outlet and a reaction chamber limited by heat-deviating walls, the reactor being charged with a metal braiding coated with catalyst; and a line (7) feeding the reaction fluid from the compressor to the reactor inlet and is short so that the degree of dispersibility of the fluid does not change during the passage through the line. An Independent claim is also included for a process for carrying out reactions in the gaseous, liquid and solid phases comprising producing a reaction fluid by dispersion of a gaseous phase in a liquid phase; feeding the reaction fluid produced through the reactor; exchanging reaction heat on the walls of the reactor chamber; and separating the reaction fluid into a gas phase and a liquid phase.

公开(公告)号：DE19846056A1

公开(公告)日：2000-04-13

申请号：DE19846056

申请日：1998-10-07

Applicant: BASF AG

Inventor： THERRE JOERG ,  KAIBEL GERD ,  AQUILA WERNER ,  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 ,  C07C45/82

Abstract: Preparation of citral (I) comprises thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal and rearrangement of obtained intermediates cis/trans-prenyl-(methyl-butadienyl)-ether (IV) and 2,4,4-trimethyl-3-formyl-1,5-hexadiene (V). (IV) and (V) are continuously distilled off and converted into (I) before or after removal of by-product prenol. Preparation of 3,7-dimethyl-2,6-octadien-1-al (citral) of formula (I) comprises: (1) thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal of formula (II) optionally in the presence of an acid catalyst to split off 3-methyl-buten-1-ol (prenol) of formula (III) and form cis/trans-prenyl-(methyl-butadienyl)-ether of formula (IV); (2) Claisen rearrangement of (IV) to give 2,4,4-trimethyl-3-formyl-1,5-hexadiene of formula (V); and (3) Cope rearrangement of (V) to form (I). The transitionally formed (IV) and (V) and the desired citral as well as the prenol (III) are continuously distilled out of the reaction mixture and (IV) and (V), before or after distillative separation of (III) and optional by-products, are subjected to rearrangement to form (I) at 100-200 degrees C.