公开(公告)号：AT382614T

公开(公告)日：2008-01-15

申请号：AT01951476

申请日：2001-05-03

Applicant: BASF AG

Inventor： KAIBEL GERD ,  WECK ALEXANDER ,  RAHN RALF-THOMAS

IPC: C07D307/08 ,  B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/33

Abstract: In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, gamma-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried out in an assembly of distillation columns comprising at least one dividing wall column or at least one assembly of thermally coupled conventional distillation columns.

公开(公告)号：AT378310T

公开(公告)日：2007-11-15

申请号：AT03763838

申请日：2003-07-14

Applicant: BASF AG

Inventor： GOEBBEL HANS-GEORG ,  KAIBEL GERD ,  MILLER CHRISTIAN ,  DOBLER WALTER ,  DIRNSTEINER THOMAS ,  HAHN THILO ,  BREUER KLAUS ,  AQUILA WERNER

IPC: B01J23/44 ,  C07C45/62 ,  B01J8/22 ,  B01J8/34 ,  C07B61/00 ,  C07C49/04

Abstract: A process is described for preparing tetrahydrogeranylacetone in which pseudoionone, geranylacetone and/or dihydrogeranylacetone in a liquid phase, in which particles of a catalyst which is capable of preferentially hydrogenating carbon-carbon double bonds over carbon-oxygen double bonds are suspended, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.

公开(公告)号：AT362905T

公开(公告)日：2007-06-15

申请号：AT02712897

申请日：2002-02-06

Applicant: BASF AG

Inventor： BOHNER GERD ,  KINDLER KLAUS ,  PAHL MELANIE ,  KAIBEL GERD

IPC: C07C11/167 ,  B01D3/40 ,  C07C7/08

Abstract: A process for recovering crude 1,3-butadiene from a C 4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.

公开(公告)号：DE102005056784A1

公开(公告)日：2007-05-31

申请号：DE102005056784

申请日：2005-11-28

Applicant: BASF AG

Inventor： HOFFER BRAM WILLEM ,  SCHWAB EKKEHARD ,  KAIBEL GERD ,  NEUMANN DIRK ,  BUERKLE JOCHEN ,  BUTZ THOMAS

IPC: C07C1/04 ,  C07C2/24 ,  C10G2/00

Abstract: Synthesis of olefin from synthesis gas in the presence of at least a Fischer-Tropsch catalyst in a reaction column comprises introducing the synthesis gas into the beneath of the zone (A) of the reaction column and removing the obtained olefin from the beneath of the inlet for the synthesis gas. An independent claim is included for a mixture of olefin obtained by the above process.

公开(公告)号：DE102005053230A1

公开(公告)日：2007-05-10

申请号：DE102005053230

申请日：2005-11-06

Applicant: BASF AG

Inventor： NEUMANN DIRK ,  KOCH MICHAEL ,  SCHINDLER GOETZ-PETER ,  BENFER REGINA ,  KAIBEL GERD ,  WAGNER HANS-GUENTER ,  PAESLER PETER

IPC: C07C4/18 ,  C07C4/20 ,  C07C5/41 ,  C07C15/00

公开(公告)号：DE50111854D1

公开(公告)日：2007-02-22

申请号：DE50111854

申请日：2001-05-09

Applicant: BASF AG

Inventor： MEYER GERALD ,  KAIBEL GERD ,  BOHNER GERD ,  KINDLER KLAUS ,  ADRIAN TILL ,  PICKENAECKER KARIN ,  PAHL MELANIE ,  HILL THOMAS

IPC: C07C7/08 ,  C07C11/167 ,  B01D3/14 ,  B01D3/40 ,  C07C5/09 ,  C07C7/00 ,  C07C7/163 ,  C10G7/08 ,  C10G70/00 ,  C10G70/02

Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.

公开(公告)号：AU2002217035B2

公开(公告)日：2006-09-28

申请号：AU2002217035

申请日：2001-11-15

Applicant: BASF AG

Inventor： BOHNER GERD ,  PAHL MELANIE ,  KINDLER KLAUS ,  KAIBEL GERD

IPC: C07C7/04 ,  B01D3/14 ,  C07C11/167

Abstract: A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.

公开(公告)号：DE50110518D1

公开(公告)日：2006-09-07

申请号：DE50110518

申请日：2001-05-03

Applicant: BASF AG

Inventor： RUST HARALD ,  KAIBEL GERD

IPC: B01D3/14

Abstract: Separating wall column comprises an upper column region (6), a feed part (7), a removal part (8) and a lower column region (9) as segments. The feed part and the removal part are separated from each other by a separating wall (10) fixed in the column. The separating wall is partially formed from an elastic material and has a low over-dimension with respect to its width. The wall is fixed in the column so that it exerts an elastic force on the inner casing of the column. Preferred Features: The separating wall is completely formed from an elastic material and is present as a one piece strip. The wall is made from PTFE or a corrosion resistant chromium-nickel high grade steel. The side edges of the wall have an angle of 20-60 degrees . The wall has a thickness of 0.05-1, preferably 0.1-0.3 mm.

公开(公告)号：AT334957T

公开(公告)日：2006-08-15

申请号：AT02792927

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：DE50301577D1

公开(公告)日：2005-12-08

申请号：DE50301577

申请日：2003-07-07

Applicant: BASF AG

Inventor： KAIBEL GERD ,  MERGER MARTIN ,  DOMSCHKE THOMAS ,  DECKERT PETRA ,  SAUER FRIEDRICH

IPC: C07D307/62

Abstract: The invention relates to a method for the separation of ascorbic acid from a mixture containing ascorbic acid and 2-keto-L-gulonic acid in a polar, preferably aqueous solvent, by means of liquid/liquid extraction using an amide. The method preferably also comprises steps for the back-extraction of the ascorbic acid, recycling of the extraction solvent and/or the back extraction solvent and for isolation of the ascorbic acid from the back extraction solvent. The invention further relates to a method for the production of ascorbic acid from KGA and isolation of the ascorbic acid so produced.