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公开(公告)号：BR0210492A
公开(公告)日：2004-06-22
申请号：BR0210492
申请日：2002-07-02
Applicant: BASF AG
Inventor： WOSTBROCK KARL-HEINZ , THIEL JOACHIM , GER HEINZ KR , FER ECKHARD STR , WEBER MARKUS , GERBER BERND , RUMPF BERND , SACHWEH BERND , KERTH STEFFEN
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.
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公开(公告)号：BR0210761A
公开(公告)日：2004-07-20
申请号：BR0210761
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.
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公开(公告)号：CA2451482A1
公开(公告)日：2003-01-16
申请号：CA2451482
申请日：2002-07-02
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 mixtur e of NaOH and KOH with a molar ratio of Na+: K+ in the region of between 70: 3 0 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 t he base.
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公开(公告)号：CA2450107C
公开(公告)日：2009-09-22
申请号：CA2450107
申请日：2002-07-02
Applicant: BASF AG
Inventor： GERBER BERND , WEBER MARKUS , KRUGER HEINZ , STROFER ECKHARD , THIEL JOACHIM , RUMPF BERND , WOSTBROCK KARL-HEINZ , SACHWEH BERND , KERTH STEFFEN
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.
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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
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.
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Patent Agency Ranking
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
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.
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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
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.
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公开(公告)号：CA2451482C
公开(公告)日：2009-12-01
申请号：CA2451482
申请日：2002-07-02
Applicant: BASF AG
Inventor： KERTH STEFFEN , WOSTBROCK KARL-HEINZ , WEBER MARKUS , STROEFER ECKHARD
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 mixtur e of NaOH and KOH with a molar ratio of Na+: K+ in the region of between 70: 3 0 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 t he base.
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公开(公告)号：DE50201806D1
公开(公告)日：2005-01-20
申请号：DE50201806
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.
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公开(公告)号：DE50201592D1
公开(公告)日：2004-12-23
申请号：DE50201592
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
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.
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