公开(公告)号：DE10260092A1

公开(公告)日：2004-07-01

申请号：DE10260092

申请日：2002-12-19

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  PALLASCH HANS-JUERGEN ,  STROEFER ECKHARD ,  BLANKERTZ HEINRICH-JOSEF

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14 ,  B01D3/00

Abstract: Method for purifying isocyanates (I) by distillation. Method for purifying isocyanates by distillation comprises: (a) first separating a stream (1) containing (I), high and low boilers and non-evaporatable residue (X) by distillation (at least one theoretical plate) into a sidestream (2), containing (I) and (X), and a vapor stream (3), containing (I) and low boilers; (b) (X) in (2) is kept separate from (3) and/or material streams that consist at least partly of (3); (c) another (I)-containing vapor stream (4) is separated from (2), leaving stream (8) consisting essentially of (X); (d) streams (4) and (3) are separated by distillation into 3 streams (5,6,7) of different boiling ranges, where the lowest boiler (5) contains a significant proportion of the low boilers in (1), the highest boiler (7) contains a significant proportion of the high boilers in (1) and the middle stream (6) is essentially (I).

公开(公告)号：HU0400129A2

公开(公告)日：2004-06-28

申请号：HU0400129

申请日：2002-06-06

Applicant: BASF AG

Inventor： MUELLER CHRISTIAN ,  STROEFER ECKHARD ,  WOELFERT ANDREAS

IPC: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a process for the production of isocyanates by reaction of primary amines with phosgene, in which isocyanate is used as solvent, wherein some or all of isocyanate used as solvent is added to the reaction mixture only after the amine and phosgene have been physically combined.

公开(公告)号：DE10222968A1

公开(公告)日：2003-12-04

申请号：DE10222968

申请日：2002-05-23

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD ,  BRODHAGEN ANDREAS

IPC: C07C263/10 ,  C07C265/14 ,  C07B43/10

Abstract: The present invention relates to a continuous process for preparing isocyanates by reacting primary amines with phosgene, wherein the reaction is carried out in a cascade of at least two tube reactors and the gas phase formed in the reaction is separated off in a phase separator after each reactor and only the liquid phase is passed to the next reactor or to product purification and the reaction volume of the first tube reactor is only a fraction of the total reaction volume.

公开(公告)号：DE10153411A1

公开(公告)日：2003-05-15

申请号：DE10153411

申请日：2001-10-30

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  RUETTER HEINZ ,  RITTINGER STEFAN ,  WEHINGER MARK ,  ALEMANY AURELIE ,  SCHMIDT WILLI

IPC: C07D295/00 ,  B01D3/00 ,  B01D3/14 ,  B01D3/36 ,  B01D11/04 ,  C07C209/84 ,  C07C209/86 ,  C07C211/04 ,  C07C211/08 ,  C07D207/04 ,  C07D211/04 ,  C07D295/02 ,  C07D295/03 ,  C07B63/00 ,  C07C209/82 ,  C07D211/02 ,  C07D207/02 ,  C07D295/023 ,  C07D265/30

Abstract: Separation of mixture of amine(s), water, low-boiling fraction and optionally high-boiling fraction includes optional distillative separation of low and high-boiling fractions, extraction of mixture with aqueous sodium hydroxide solution; and distillation of resultant aqueous-organic phase to recover anhydrous amine(s) from sump or side in separation part of column and amine/water azeotrope. Separation of a mixture containing amine(s) (I), water, low-boiling fraction (II) and optionally high-boiling fraction (III) comprises: (i) optional distillative separation of a first low-boiling fraction; (ii) optional distillative separation of a first high-boiling fraction; (iii) extraction of the mixture with aqueous sodium hydroxide (NaOH) solution, giving a first aqueous phase containing NaOH solution and a second aqueous-organic phase (IV) containing amines, other low-boiling fractions and optionally other high-boiling fractions; and (iv) distillation of the aqueous-organic phase to recover anhydrous amines as sump discharge or side discharge in the separation part of the column, an amine/water azeotrope, which is recycled to (iii), as side discharge in the concentration part and further low-boiling fraction as top discharge.

公开(公告)号：DE10129233A1

公开(公告)日：2003-01-02

申请号：DE10129233

申请日：2001-06-19

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD

IPC: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates by reacting primary amines with phosgene, and using isocyanate as the solvent. The inventive method is characterized in that a portion or the entire quantity of the isocyanate used as the solvent is only added to the reaction batch once the amine and the phosgene have been combined.

公开(公告)号：DE10036410A1

公开(公告)日：2002-02-07

申请号：DE10036410

申请日：2000-07-26

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  BRAUCH THOMAS ,  GEIGER THOMAS ,  KOLB THOMAS

IPC: F27B7/32 ,  F27B7/34 ,  F27B7/36 ,  F27B9/39

Abstract: The chute (4) supplying material for incineration and the burner (1) are located at one end face (2) of the kiln (3). They are so directed that the projection of the burner axis, meets the wall of the kiln cylinder, beyond the material supplied for incineration. An Independent claim is included for the method of complete incineration of materials, in which they are so introduced into the rotary kiln that a double-sided boundary layer is formed between the vaporized materials and the oxygen-containing gas.

公开(公告)号：BRPI0512358B1

公开(公告)日：2015-02-10

申请号：BRPI0512358

申请日：2005-06-22

Applicant: BASF AG

Inventor： KNOESCHE CARSTEN ,  WOELFERT ANDREAS ,  DAISS ANDREAS

IPC: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a process for preparing isocyanates by reacting amines with phosgene in the gas phase in a reaction zone, with the reaction mixture being passed through a zone into which a liquid is sprayed to stop the reaction, wherein the reaction mixture is passed through a zone having a reduced flow cross section between the reaction zone and the zone into which the liquid is sprayed.

公开(公告)号：HU229636B1

公开(公告)日：2014-03-28

申请号：HU0400129

申请日：2002-06-06

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD

IPC: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a process for the production of isocyanates by reaction of primary amines with phosgene, in which isocyanate is used as solvent, wherein some or all of isocyanate used as solvent is added to the reaction mixture only after the amine and phosgene have been physically combined.

公开(公告)号：HU228715B1

公开(公告)日：2013-05-28

申请号：HU0301313

申请日：2001-06-29

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  PENZEL ULRICH

IPC: B01F3/08 ,  B01F5/00 ,  B01F5/04 ,  B01F5/02 ,  B01F13/10 ,  B01F15/02 ,  B01J19/00 ,  B29B7/32 ,  C07B43/10 ,  C07B61/00 ,  C07C263/10 ,  C07C265/14

Abstract: In a process for mixing reactant streams ( 1, 2; 5 ) to produce a product stream ( 10 ) using a mixing configuration ( 15, 16 ) having a number of reactant feed points, an excess component stream of one reactant is divided into two reactant substreams ( 1, 2 ) and fed into the suction region ( 3, 4 ) of a mixing space ( 12 ) at right angles to a deficient component ( 5 ) entering the mixing space ( 12 ).

公开(公告)号：BRPI0511449A

公开(公告)日：2007-12-26

申请号：BRPI0511449

申请日：2005-05-21

Applicant: BASF AG

Inventor： WOELFERT ANDREAS ,  PALLASCH HANS-JUERGEN ,  STROEFER ECKHARD ,  PENZEL ULRICH ,  DEBERDT FILIP

IPC: C07C263/10 ,  C07C265/12 ,  C07C265/14

Abstract: A process for the preparation of isocyanates by reacting amines with phosgene, the phosgene-containing stream of starting materials (i) being substantially free of isocyanates and (ii) having a mass content of hydrogen chloride (referred to below as HCl) of less than 0.4% by mass, and a production plant for carrying out the process according to the invention.