公开(公告)号：DE10131788A1

公开(公告)日：2003-01-16

申请号：DE10131788

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: B01D3/14 ,  B01D3/16 ,  B01J19/30 ,  B01J19/32 ,  C01B21/14 ,  B01D3/00

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：CA2450107A1

公开(公告)日：2003-01-16

申请号：CA2450107

申请日：2002-07-02

Applicant: BASF AG

Inventor： RUMPF BERND ,  SACHWEH BERND ,  KERTH STEFFEN ,  STROFER ECKHARD ,  KRUGER HEINZ ,  WOSTBROCK KARL-HEINZ ,  THIEL JOACHIM ,  GERBER 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：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.

公开(公告)号：DK1406832T3

公开(公告)日：2006-12-11

申请号：DK02745423

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：AT335709T

公开(公告)日：2006-09-15

申请号：AT02745423

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

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：AT284837T

公开(公告)日：2005-01-15

申请号：AT02753076

申请日：2002-07-02

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  KERTH STEFFEN

IPC: C01B21/14

Abstract: A process for preparing a salt-free aqueous hydroxylamine solution by reacting an aqueous solution of a hydroxylammonium salt with a base to give a mixture and separating from said mixture by distillation a salt-free aqueous hydroxylamine solution, involving using as a base an aqueous solution of a mixture of NaOH and KOH in a molar ratio Na + :K + in the range from 70:30 to 95:5 and with a total concentration of Na + and K + in the range from 0.1 to 10 m/m % based on the total amount of the mixture.

公开(公告)号：DE10134389A1

公开(公告)日：2003-01-16

申请号：DE10134389

申请日：2001-07-04

Applicant: BASF AG

Inventor： WOSTBROCK KARL-HEINZ ,  STROEFER ECKHARD ,  WEBER MARKUS ,  KERTH STEFFEN

IPC: C01B21/14

Abstract: The invention relates to a method for producing an aqueous hydroxylamine solution that is devoid of salt by reacting an aqueous solution of a hydroxylammonium salt with a base to obtain a mixture and by separating an aqueous hydroxylamine solution devoid of salt by distillation from said mixture. The method is characterised in that an aqueous solution of a mixture of NaOH and KOH with a molar ratio of Na+: K+ in the region of between 70: 30 and 95: 5 and a total concentration of Na+ and K+ in the region of between 0.1 and 10 m/m % (in relation to the total quantity of the mixture) is used as the base.

公开(公告)号：CA2451869A1

公开(公告)日：2003-01-16

申请号：CA2451869

申请日：2002-07-02

Applicant: BASF AG

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

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 sa id column.