Verfahren zur Herstellung von Wässrigen Lösungen von freiem Hydroxylamin
    12.
    发明公开
    Verfahren zur Herstellung von Wässrigen Lösungen von freiem Hydroxylamin 失效
    一种用于自由羟胺的水溶液的制备方法。

    公开(公告)号:EP0230958A1

    公开(公告)日:1987-08-05

    申请号:EP87100688.8

    申请日:1987-01-20

    IPC分类号: C01B21/14

    CPC分类号: C01B21/1445

    摘要: Verfahren zur Herstellung von wäßrigen Lösungen von freiem Hydroxyl­amin, dadurch gekennzeichnet, daß man

    a) Hydroxylammoniumsulfat mit Ammoniak in niederen Alkanolen als Lösungs­mittel umsetzt und eine Lösung von freiem Hydroxylamin und festem Ammoniumsulfat mit Resten an Hydroxylammoniumsulfat erhält,
    b) aus dem so erhaltenen Reaktionsgemisch festes Ammoniumsulfat und Hydroxylammoniumsulfat abtrennt und als Filtrat eine alkoholische Lösung von freiem Hydroxylamin erhält,
    c) zu der so erhaltenen alkoholischen Lösung von freiem Hydroxylamin Stabilisatoren und Wasser zugibt und
    d) aus der freies Hydroxylamin, Stabilisatoren und Wasser enthalten­den alkoholischen Lösung die Alkanole abdestilliert.

    摘要翻译: 得到一种用于制备游离羟胺的水溶液,其特征在于a)使硫酸羟铵与在低级链烷醇作为溶剂和游离羟胺和固体硫酸与硫酸羟铵的残基铵的溶液中的氨处理,b)从所述反应混合物得到的固体硫酸铵 和从自由羟胺,稳定剂和水醇溶液中蒸馏除去,所述链烷醇含硫酸羟铵被分离出作为滤液并接收不含羟胺的醇溶液,c)中的游离羟胺稳定剂所得的醇溶液,并加入水和d)。

    AN IMPROVED PROCESS FOR MANUFACTURING HIGHLY CONCENTRATED HYDROXYLAMINE
    15.
    发明授权
    AN IMPROVED PROCESS FOR MANUFACTURING HIGHLY CONCENTRATED HYDROXYLAMINE 有权
    改进方法用于生产高浓羟胺

    公开(公告)号:EP1427669B1

    公开(公告)日:2006-01-04

    申请号:EP02776962.9

    申请日:2002-09-03

    IPC分类号: C01B21/14

    CPC分类号: C01B21/1481 C01B21/1445

    摘要: An improved ion exchange process for manufacturing and concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions is disclosed. The process involves the use of an aqueous hydroxylamine wash step which assists in controlling the processing temperature and leads to a more concentrated, purified aqueous hydroxylamine solution.

    AN IMPROVED PROCESS FOR MANUFACTURING HIGHLY CONCENTRATED HYDROXYLAMINE
    16.
    发明公开
    AN IMPROVED PROCESS FOR MANUFACTURING HIGHLY CONCENTRATED HYDROXYLAMINE 有权
    改进方法用于生产高浓羟胺

    公开(公告)号:EP1427669A1

    公开(公告)日:2004-06-16

    申请号:EP02776962.9

    申请日:2002-09-03

    IPC分类号: C01B21/14

    CPC分类号: C01B21/1481 C01B21/1445

    摘要: An improved ion exchange process for manufacturing and concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions is disclosed. The process involves the use of an aqueous hydroxylamine wash step which assists in controlling the processing temperature and leads to a more concentrated, purified aqueous hydroxylamine solution.

    Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine
    19.
    发明公开
    Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine 失效
    羟基甲醛中的维生素Zur Reinigung vonHydroxylaminlösungenund Umwandlung von Hydroxylaminsalzen

    公开(公告)号:EP0870532A2

    公开(公告)日:1998-10-14

    申请号:EP98302671.7

    申请日:1998-04-06

    申请人: Sachem, Inc.

    IPC分类号: B01D61/44 C07C209/84 C25B3/00

    摘要: In one embodiment, the present invention provides a method of preparing hydroxylamine from a hydroxylammonium salt solution, including providing an electrochemical cell containing an anode, a cathode, a cation selective membrane and an anion selective membrane, wherein the cation selective membrane is positioned between the cathode and the anion selective membrane, and the anion selective membrane is positioned between the cation selective membrane and the anode, thereby defining a feed compartment between the cation selective membrane and the anion selective membrane, a recovery compartment between the cathode and the cation selective membrane, and an acid compartment between the anion selective membrane and the anode; charging a first solution to the acid compartment and a second solution the recovery compartment; charging the hydroxylammonium salt solution to the feed compartment; passing a current through the cell to produce hydroxylamine in the recovery compartment; and recovering hydroxylamine from the recovery compartment.

    摘要翻译: 在一个实施方案中,本发明提供了从羟基铵盐溶液制备羟胺的方法,包括提供含有阳极(12),阴极(11),阳离子选择性膜(14)和阴离子 选择性膜(13),其中阳离子选择性膜(14)位于阴极(11)和阴离子选择性膜(13)之间,并且阴离子选择性膜(13)位于阳离子选择性膜(14)和 阳极(12),从而在阳离子选择性膜(14)和阴离子选择性膜(13)之间限定进料室(16),阴极(11)和阳离子选择膜(14)之间的回收室 )和阴离子选择性膜(13)和阳极(12)之间的酸室(15)。 将第一溶液装入所述酸室(15)和所述回收室(17)的第二溶液; 将羟基铵盐溶液装入进料室(16); 使电流通过电池(10)以在回收室(17)中产生羟胺; 并从回收室(17)中回收羟胺。