公开(公告)号：DE50207808D1

公开(公告)日：2006-09-21

申请号：DE50207808

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  THIEL JOACHIM ,  KRUEGER HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  GERBER BERND ,  RUMPF BERND ,  SACHWEH BERND ,  KERTH STEFFEN

IPC: C01B21/14 ,  B01D3/16 ,  B01J19/30 ,  B01J19/32

Abstract: A process for preparing a salt-free aqueous hydroxylamine solution by distilling an aqueous solution of a hydroxylammonium salt and a base in a tray column having at least two mechanical trays, wherein random or structured packings are located above at least one tray of the tray column over the cross section of the column.

公开(公告)号：DE102004053662A1

公开(公告)日：2006-05-04

申请号：DE102004053662

申请日：2004-11-03

Applicant: BASF AG

Inventor： SESING MARTIN ,  RHODE THORSTEN ,  STROEFER ECKHARD ,  HENKELMANN JOCHEM

IPC: C07C263/10 ,  C07C263/20

Abstract: The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents.

公开(公告)号：PL374560A1

公开(公告)日：2005-10-31

申请号：PL37456003

申请日：2003-05-13

Applicant: BASF AG

Inventor： FRIESE KATRIN ,  RAULS MATTHIAS ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  ARMBRUSTER HARALD ,  ZEINER HARTMUT ,  EGBERS GITTA ,  STROEFER ECKHARD ,  HECK LUDWIG ,  HILDENBRAND PETER

IPC: C07D323/06

Abstract: Production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: distillation of the crude trioxane; crystallization of the trioxane and; separation from the mother liquor followed by melting and distillation of other byproducts. A process for the production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: (a) distillation of the crude trioxane; (b) crystallization of the trioxane and; (c) separation from the mother liquor followed by; (d) melting and; (e) distillation of other byproducts.

公开(公告)号：DE102004006610A1

公开(公告)日：2005-09-01

申请号：DE102004006610

申请日：2004-02-11

Applicant: BASF AG

Inventor： SEIDEMANN LOTHAR ,  SCHUBERT OLGA ,  SESING MARTIN ,  STROEFER ECKHARD ,  FIENE MARTIN ,  WALSDORFF CHRISTIAN ,  HARTH KLAUS

IPC: B01J8/00 ,  B01J8/18 ,  B01J8/34 ,  C01B7/04

Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.

公开(公告)号：AT300987T

公开(公告)日：2005-08-15

申请号：AT02719855

申请日：2002-02-15

Applicant: BASF AG

Inventor： BREDEHOEFT JAN PETER ,  PALLASCH HANS-JUERGEN ,  HECK LUDWIG E ,  STROEFER ECKHARD

IPC: B01D1/30 ,  B01D3/32 ,  B60P1/28 ,  C07C263/10 ,  C07C265/14 ,  B01D3/00

Abstract: An arrangement for carrying out chemical reactions comprises at least one distillation column and/or at least one container and at least one circulation evaporator, which are connected to one another via connecting elements, liquid being taken off completely or partly from a tray or from a stacked packing bed or from a dumped packing bed or from a liquid collector of the distillation column or being fed as an external feed stream below the lower tube sheet of the circulation evaporator to said evaporator.

公开(公告)号：AU2004309046A1

公开(公告)日：2005-07-14

申请号：AU2004309046

申请日：2004-12-21

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  HASSE HANS ,  STAMMER ACHIM ,  LANG NEVEN ,  FRIESE THORSTEN

IPC: C07D323/06

Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

公开(公告)号：MXPA05002149A

公开(公告)日：2005-05-23

申请号：MXPA05002149

申请日：2003-09-12

Applicant: BASF AG

Inventor： STROEFER ECKHARD

IPC: B01J23/46 ,  C01B7/04 ,  C01B7/00

Abstract: Proceso para preparar cloro mediante oxidacion de fase de gas catalitica de cloruro de hidrogeno sobre un lecho de catalizador fijo, que comprende los pasos de: a) poner disponible una corriente de gas de alimentacion que comprende cloruro de hidrogeno y una corriente II de gas de alimentacion que contiene oxigeno; b) alimentar la corriente I de gas de alimentacion, la corriente II de gas de alimentacion, si se desea una corriente Ia reciclada que comprende cloruro de hidrogeno, su se desea una corriente IIa reciclada que contiene oxigeno y una corriente III reciclada hacia una zona de oxidacion y oxidar cloruro de hidrogeno a cloro en presencia de un catalizador presente en un lecho fijo para proporcionar una corriente IV de gas de producto que comprende cloro, oxigeno no reaccionado, cloruro de hidrogeno no reaccionado y vapor de agua; c) tomar la corriente III reciclada de la corriente IV de gas de producto y recircularla a la zona de oxidacion, dejando una corriente IVa de gas de producto. La relacion de las corrientes III/IVa es generalmente de 0.005 a 3, de preferencia de 0.2 a 1.5 y particularmente de preferencia de 0.4 a 1. La corriente III de reciclado es de preferencia atraida por una o mas de las corrientes I II y, si es aplicable IIa de gas, por medio de una boquilla de chorro.

公开(公告)号：DE10331772A1

公开(公告)日：2005-02-03

申请号：DE10331772

申请日：2003-07-11

Applicant: BASF AG

Inventor： STEINBRENNER ULRICH ,  STROEFER ECKHARD ,  SOHN MARTIN ,  QUASCHNING VERONIKA ,  MOEHWALD HELMUT ,  THIELE KAI ,  DEBERDT FILIP ,  JACOBS JAN D ,  PINKOS RALF

IPC: C07C209/78 ,  C07C209/86 ,  C07C211/50 ,  C07C209/60

Abstract: A process is described for preparing diaminodiarylmethanes comprising the steps a) reacting an aromatic amine with a methylene-donating agent in the presence of homogeneous acid catalysts, b) removing the homogeneous acid catalyst from the reaction product, c) working up and purifying the reaction product, which comprises removing the homogeneous acid catalyst from the reaction mixture by adsorption to a solid adsorbent.

公开(公告)号：AT282580T

公开(公告)日：2004-12-15

申请号：AT02767163

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  THIEL JOACHIM ,  KRUEGER HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  GERBER BERND ,  RUMPF BERND ,  SACHWEH BERND ,  KERTH STEFFEN

IPC: B01D3/14 ,  B01D3/16 ,  B01J19/30 ,  B01J19/32 ,  C01B21/14

Abstract: The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of said column.

公开(公告)号：DE10309286A1

公开(公告)日：2004-09-16

申请号：DE10309286

申请日：2003-03-04

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  GRUETZNER THOMAS ,  HASSE HANS

IPC: C07C45/78 ,  C07C45/82 ,  C07C47/058

Abstract: Method of stabilizing high-concentration formaldehyde solutions having a CH 2 O content of >70% by weight against precipitation of solids, which comprises heating the high-concentration formaldehyde solution at a heating rate of at least 5° C./min to a temperature of from 80° C. to 200° C. immediately after it has been prepared and storing it at a temperature in this range.