公开(公告)号：AU2003258504A1

公开(公告)日：2004-01-23

申请号：AU2003258504

申请日：2003-07-02

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER ,  SCHRODER JURGEN

IPC: B01D3/22 ,  C07C51/44

Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

公开(公告)号：DE10230219A1

公开(公告)日：2004-01-22

申请号：DE10230219

申请日：2002-07-04

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  THIEL JOACHIM ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN

IPC: B01D3/22 ,  C07C51/44 ,  C07C57/07

Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

公开(公告)号：AU2003224144A1

公开(公告)日：2003-11-11

申请号：AU2003224144

申请日：2003-05-06

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  ZEHNER PETER ,  HECHLER CLAUS ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  ADAMI CHRISTOPH ,  BOHLING RALF

IPC: C07C51/25 ,  C07C51/36 ,  C07C51/44 ,  C07C67/303 ,  C07C57/07 ,  C07C53/122 ,  C07C57/05 ,  C07C67/08 ,  C07C69/24 ,  C07C69/54

公开(公告)号：DE10300499A1

公开(公告)日：2003-10-23

申请号：DE10300499

申请日：2003-01-08

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  DAMS ALBRECHT ,  SCHROEDER JUERGEN

IPC: B01D3/14 ,  B01D5/00 ,  C07C45/81 ,  C07C45/82 ,  C07C51/43 ,  C07C51/44 ,  C07C67/54 ,  C07C57/07 ,  B01D3/00 ,  C07B63/00 ,  C07C45/90

Abstract: A process for the distillative separation of (meth)acrylic monomer containing liquids in a distillation column comprises direct cooling to form a condensate in a condensation chamber such that the direct cooling of the liquid is carried out in at least two separate spray zones arranged in series. A process for the distillative separation of (meth)acrylic monomer containing liquids in a distillation column (I) from the head of which (meth)acrylic monomer containing liquor is removed and directly cooled to form a condensate whereby the condensation chamber at the head of the column is separated from the region containing effective separating components of the distillation column by only one tray and is characterized in that the direct cooling of the liquid is carried out in at least two separate spray zones arranged in series by spraying of super cooled polymerization inhibitor containing head condensate whereby the temperature of the sprayed super cooled head condensate reduces from spray zone to spray zone. An Independent claim is included for the distillation column (I) comprising at least one tray and a spray condenser having at least two spray zones.

公开(公告)号：DE10131787A1

公开(公告)日：2003-01-16

申请号：DE10131787

申请日：2001-07-04

Applicant: BASF AG

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

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

Abstract: The invention relates to a method for the production of a salt-free aqueous hydroxylamine solution by distilling an aqueous solution of an hydroxylammonium salt and a base in a plate column having at least two mechanical plates. The invention is characterized in that packings or structured packings are placed above at least one of the plates of the plate column along the cross section of said column.

公开(公告)号：BR9911664A

公开(公告)日：2001-03-20

申请号：BR9911664

申请日：1999-06-30

Applicant: BASF AG

Inventor： BASTIAENSEN ERIK ,  ECK BERND ,  THIEL JOACHIM

IPC: C07C51/43 ,  C07C51/44 ,  C07C57/07

Abstract: In a process for the purification of acrylic acid or methacrylic acid by crystallization and distillation, the following steps are carried out:(a) crystallization of a mixture containing the acrylic acid or methacrylic acid with formation of product crystals having a higher concentration of acrylic acid or methacrylic acid and of a mother liquor,(b) distillation of at least part of the mother liquor from step (a) with formation of a distillation residue, which is at least partly removed, and of a top product,(c) crystallization of at least part of the top product from step (b) with formation of a crystallization residue, which is removed, and of crystals and(d) recycling of the crystals from step (c) to the crystallization (a).

公开(公告)号：DE19935038A1

公开(公告)日：2001-02-01

申请号：DE19935038

申请日：1999-07-26

Applicant: BASF AG

Inventor： AUER HEINZ ,  DAHLHAUS JUERGEN ,  FISCHER KARL ,  HAMMER HANS ,  KELLENBENZ JOCHEN ,  SCHULZ MICHAEL ,  THIEL JOACHIM ,  VICARI MAXIMILIAN

IPC: B01D3/00 ,  B01J3/00 ,  B01J3/02 ,  B01J19/00 ,  C07B61/00 ,  C07C29/80 ,  C07C31/04 ,  C07C67/36 ,  C07C69/06 ,  C07C67/54

Abstract: The invention relates to a method of producing methyl formiate by reacting excess methanol with carbon monoxide under increased pressure and increased temperature in the presence of an alkalimethylate or alkaline earth methylate as the catalyst in a pressure-proof reactor. The inventive method uses at least two reactor elements, preferably countercurrent reactors, at a temperature of approximately 100 DEG C and a pressure of approximately 100 bar in combination with a solid-matter free desalination of the reactor product. The inventive method provides a means for producing methyl formiate of any quality desired and with an excellent production capacity in a very economical and complication-free manner. The invention further relates to a method of solid-matter free desalination and to devices for carrying out the inventive method.

公开(公告)号：CZ20000898A3

公开(公告)日：2000-06-14

申请号：CZ20000898

申请日：1998-09-10

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  BROELLOS KLAUS

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

CPC classification number: B01D5/003 ,  C07C51/44 ,  C07C57/04

公开(公告)号：DE19838845A1

公开(公告)日：2000-03-02

申请号：DE19838845

申请日：1998-08-26

Applicant: BASF AG

Inventor： ECK BERND ,  THIEL JOACHIM ,  MACHHAMMER OTTO ,  DE DECKER EMILE

IPC: C07C51/25 ,  C07C51/43 ,  C07C57/07

Abstract: Purification of acrylic acid (I) comprises crystallization from a mixture containing (I) and a solvent (II) with a higher boiling point than (I). An Independent claim is also included for the production of (I) by preparing: (a) a gaseous reaction product with the composition of a reaction mixture from catalytic gas phase oxidation of 3 carbon (C) alkanes, alkenes, alkanols, alkanals and/or their precursors to (I); (b) absorbing the reaction product in (II) to give a mixture containing (I) and (II); and (c) purification as above.

公开(公告)号：CA2451869C

公开(公告)日：2009-11-24

申请号：CA2451869

申请日：2002-07-02

Applicant: BASF AG

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

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

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 sa id column.