公开(公告)号：PT1575908E

公开(公告)日：2006-12-29

申请号：PT03785813

申请日：2003-12-13

Applicant: BASF AG

Inventor： PENZEL ULRICH ,  MARTIN SOHN DR ,  ABEEL PETER VAN DEN ,  JACOBS JAN D ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PALLASCH HANS-JUERGEN ,  DEBERDT FILIP ,  MACKENROTH WOLFGANG

IPC: C07C263/20

公开(公告)号：AT335721T

公开(公告)日：2006-09-15

申请号：AT03785813

申请日：2003-12-13

Applicant: BASF AG

Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  VAN DEN ABEEL PETER ,  DEBERDT FILIP ,  JACOBS JAN D ,  MACKENROTH WOLFGANG

IPC: C07C263/20

Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.

公开(公告)号：AT333438T

公开(公告)日：2006-08-15

申请号：AT03789224

申请日：2003-12-11

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  WALSDORFF CHRISTIAN ,  HARTH KLAUS ,  STROEFER ECKHARD ,  FIENE MARTIN

IPC: B01J8/00 ,  B01J8/06 ,  C01B7/04

Abstract: Preparation of chlorine involves passing hydrogen chloride and gas stream comprising molecular oxygen in a reactor (1) having parallel catalyst tubes (2) charged with fixed-bed catalyst and at least one deflector plate (6) perpendicular to the reactor. The plates leave passages on opposite sides of the reactor free next to its interior wall. A liquid heat transfer medium circulates between tubes.

公开(公告)号：NO20062749A

公开(公告)日：2006-07-12

申请号：NO20062749

申请日：2006-06-13

Applicant: BASF AG

Inventor： STAMMER ACHIM ,  HASSE HANS ,  STROEFER ECKHARD ,  GRUETZNER THOMAS ,  LANG NEVEN ,  SIEGERT MARKUS ,  FRIESE THORSTEN ,  OTT MICHAEL ,  BLAGOV SERGEJ

IPC: B01D3/14 ,  B01D3/36 ,  C07D323/06

CPC classification number: C07D323/06 ,  B01D3/146 ,  B01D3/36 ,  Y02P20/127

公开(公告)号：CA2581502A1

公开(公告)日：2006-05-04

申请号：CA2581502

申请日：2005-10-19

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SCHELLING HEINER ,  HASSE HANS ,  BLAGOV SERGEJ ,  PINKOS ROLF ,  HAUNERT ANDREA ,  TEBBEN GERD-DIETER

IPC: C07C41/56 ,  C07C43/30 ,  C07C43/303 ,  C08G2/08

Abstract: A process for preparing polyoxymethylene dimethyl ether of the formula H 3 CO(CH 2 O) n CH 3 where n=2-10, in which methylal and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, wherein the amount of water introduced into the reaction mixture by methylal, trioxane and/or the catalyst is 4 are recycled into the reaction.

公开(公告)号：DE102004051118A1

公开(公告)日：2006-04-27

申请号：DE102004051118

申请日：2004-10-20

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

公开(公告)号：DE102004044592A1

公开(公告)日：2006-03-30

申请号：DE102004044592

申请日：2004-09-13

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  KNOESCHE CARSTEN ,  PALLASCH HANS-JUERGEN ,  SESING MARTIN ,  STROEFER ECKHARD ,  POLKA HANS-MARTIN ,  HEILIG MANFRED

IPC: B01D53/46 ,  B01D53/14 ,  B01D53/68 ,  C01B7/01 ,  C01B32/80

Abstract: The invention relates to a process for separating hydrogen chloride and phosgene, which comprises bringing a mixture of hydrogen chloride and phosgene into contact with an ionic liquid in which at least part of the hydrogen chloride is dissolved in a step a) and then separating off the hydrogen chloride dissolved in the ionic liquid in a step b).

公开(公告)号：DE50302087D1

公开(公告)日：2006-02-02

申请号：DE50302087

申请日：2003-09-12

Applicant: BASF AG

Inventor： WALSDORFF CHRISTIAN ,  FIENE MARTIN ,  ADAMI CHRISTOPH ,  STROEFER ECKHARD ,  HARTH KLAUS

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

Abstract: Production of chlorine by catalytic gas-phase oxidation of hydrogen chloride (HCl), in which an HCl-containing gas and an oxygen-containing gas are fed into a reaction zone containing a fixed bed of catalyst to give a product gas comprising chlorine, oxygen, HCl and water vapor, comprises removing a recycle stream from the product gas and recycling it to the reaction zone.

公开(公告)号：DE102004014677A1

公开(公告)日：2005-10-13

申请号：DE102004014677

申请日：2004-03-25

Applicant: BASF AG

Inventor： WALSDORFF CHRISTIAN ,  SEIDEMANN LOTHAR ,  SESING MARTIN ,  FIENE MARTIN ,  GRASLER THOMAS ,  METELKINA OLGA ,  STROEFER ECKHARD ,  SOHN MARTIN

IPC: B01J8/18 ,  B01J8/24 ,  C01B7/04 ,  B01J23/46

Abstract: The invention relates to a process for carrying out exothermic chemical equilibrium reactions in a fluidized-bed reactor, wherein there is a temperature distribution in the fluidized bed of the fluidized-bed reactor and the temperature difference between the lowest temperature and the highest temperature is at least 10 K. The invention further relates to a fluidized-bed reactor for carrying out chemical reactions in a fluidized bed ( 5 ), wherein at least one heat exchanger ( 12, 28 ) is located in the fluidized bed ( 5 ) to control the temperature distribution.

公开(公告)号：DE102004006649A1

公开(公告)日：2005-09-01

申请号：DE102004006649

申请日：2004-02-11

Applicant: BASF AG

Inventor： RUMPF BERND ,  STROEFER ECKHARD ,  LANG ORTMUND ,  LANG NEVEN

IPC: C07C45/82 ,  C07C47/04 ,  B01D1/22

Abstract: A process for preparing a high-concentration formaldehyde solution by removing water from a lower-concentration formaldehyde solution having a formaldehyde content of from 5 to 50% by weight, in which the lower-concentration formaldehyde solution is fed to a preheater and heated in the preheater, depressurized via a pressure maintenance device and concentrated in a helical tube evaporator to give a vapor stream and the high-concentration formaldehyde solution as bottom stream, wherein the heated lower-concentration formaldehyde hyde solution is depressurized in the pressure maintenance device to give a two-phase mixture which is fed into the helical tube evaporator, is proposed.