Granular sodium carbonate obtained by fluid-bed spray granulation and a process for its production
    3.
    发明授权
    Granular sodium carbonate obtained by fluid-bed spray granulation and a process for its production 有权
    通过流化床喷雾造粒获得的颗粒状碳酸钠及其生产方法

    公开(公告)号:US07041267B2

    公开(公告)日:2006-05-09

    申请号:US09961395

    申请日:2001-09-25

    CPC classification number: C01B15/106

    Abstract: The invention relates to a process for the production, by fluid-bed spray granulation, of granular sodium percarbonate having a low TAM value. According to the invention, in the fluid-bed spray granulation, an Mg compound in a quantity of 50 to 2,000 ppm, in particular 100 to 1,000 ppm, or/and a complexing agent from among the hydroxycarboxylic acids, aminocarboxylic acids, aminophosphonic acids and phosphonocarboxylic acids, hydroxyphosphonic acids and their alkali metal salts, ammonium salts or Mg salts, in a quantity of 50 to 2,000 ppm, in particular 200 to 1,000 ppm, are added as stabilisers to the soda solution and/or H2O2 solution. Preferably a combination of an Mg compound in a quantity of 100 to 1,000 ppm Mg2+ and waterglass in a quantity of 0.1 to 1 wt. %, in particular 0.1 to 0.5 wt. %, is used, and in this case granules having a TAM value of about or below 6 μW/g and simultaneously a short dissolving time, are obtainable.

    Abstract translation: 本发明涉及通过流化床喷雾造粒生产具有低TAM值的颗粒过碳酸钠的方法。 根据本发明,在流化床喷雾造粒中,羟基羧酸,氨基羧酸,氨基膦酸和/或羟基羧酸的配合剂的量为50〜2000ppm,特别是100〜1000ppm的Mg化合物,和/ 作为稳定剂加入50至2000ppm,特别是200至1,000ppm的膦酰基羧酸,羟基膦酸及其碱金属盐,铵盐或镁盐,作为稳定剂加入到苏打溶液和/或H 2 / 2< 2>溶液。 优选为0.1〜1重量%的Mg化合物与100〜1000ppm的Mg 2+ +水玻璃的组合。 %,特别是0.1至0.5wt。 %,并且在这种情况下,可以获得TAM值大约或低于6μW/ g并且同时具有短溶解时间的颗粒。

    Process for producing hydrogen peroxide by direct synthesis
    4.
    发明授权
    Process for producing hydrogen peroxide by direct synthesis 失效
    通过直接合成生产过氧化氢的方法

    公开(公告)号:US6117409A

    公开(公告)日:2000-09-12

    申请号:US289603

    申请日:1999-04-12

    CPC classification number: C01B15/029

    Abstract: An aqueous solution of hydrogen peroxide is produced by direct synthesis from hydrogen and oxygen in the presence of a heterogeneous catalyst. According to the invention, a gas mixture comprising H.sub.2 and O.sub.2, essentially saturated or supersaturated with water (=containing fog) is fed into a reactor containing the catalyst. The volume ratio of the gas mixture fed in (standard liters per hour) to liquid removed (liters per hour) is adjusted to a value equal to or greater than 15,000, especially 20,000 to 50,000, and the gas mixture leaving the reactor is recycled after replenishment with H.sub.2, O.sub.2, and H.sub.2 O vapor. Solutions with high H.sub.2 O.sub.2 concentration can be obtained according to the invention without additional concentration.

    Abstract translation: 过氧化氢水溶液是通过在非均相催化剂存在下从氢气和氧气直接合成生产的。 根据本发明,将包含H 2和O 2的基本上饱和或过饱和的(=含雾)的气体混合物进料到含有催化剂的反应器中。 以(标准升每小时)供给的气体混合物与去除的液体(升/小时)的体积比调节至等于或大于15,000,特别是20,000至50,000的值,并且离开反应器的气体混合物在 用H2,O2和H2O蒸气补充。 可以根据本发明获得具有高H 2 O 2浓度的溶液,而没有另外的浓度。

    Process for reducing dissolution time in the production and/or coating
of sodium percarbonate
    5.
    发明授权
    Process for reducing dissolution time in the production and/or coating of sodium percarbonate 失效
    减少过碳酸钠生产和/或涂层溶解时间的方法

    公开(公告)号:US5714201A

    公开(公告)日:1998-02-03

    申请号:US713649

    申请日:1996-09-13

    CPC classification number: C01B15/106

    Abstract: A process for reducing dissolution time in the production of sodium percarbonate particles containing an alkali metal silicate as stabilizer by fluidized bed spray granulation and/or by coating sodium percarbonate particles with a coating containing an alkali metal silicate, wherein a solution containing alkali metal silicate is sprayed during production and/or coating which contains alkali metal silicate having a modulus in the range from less than 3 to greater than 1. Sodium percarbonate produced by fluidized bed spray granulation is distinguished by elevated Oa stability and short dissolution times and may thus readily be used in detergents and cleaning products containing silicate builders.

    Abstract translation: 一种通过流化床喷雾造粒和/或通过用含有碱金属硅酸盐的涂层涂覆过碳酸钠颗粒来生产含有碱金属硅酸盐作为稳定剂的过碳酸钠颗粒的溶解时间的方法,其中含有碱金属硅酸盐的溶液是 在包含碱金属硅酸盐的生产和/或涂层期间喷雾,其模量在小于3至大于1的范围内。通过流化床喷雾造粒产生的过碳酸钠通过提高的Oa稳定性和较短的溶解时间来区分,因此可以容易地 用于含有硅酸盐助洗剂的洗涤剂和清洁产品。

    High active oxygen content granulated sodium perborate product and
method of making the same
    6.
    发明授权
    High active oxygen content granulated sodium perborate product and method of making the same 失效
    高活性氧含量粒状葡萄糖酸钡产品及其制备方法

    公开(公告)号:US5094827A

    公开(公告)日:1992-03-10

    申请号:US570267

    申请日:1990-08-20

    CPC classification number: C01B15/12 B01J2/00 C01B15/126

    Abstract: The spray drying of a solution containing hydrogen peroxide and sodium metaborate to obtain primary particles which are immediately conveyed after leaving the drying zone to a granulating device and are then granulated in the presence of free and/or perborate water of crystallization. The granulated materials are dried, if necessary. The generally amorphous primary particles are converted into granulated materials with at least partially crystalline structure and significantly improved shelf life. The work is performed with advantage in a spray dryer with integrated fluid bed or in a compressing granulating device. The method is suitable for preparing perborate granulated materials with an active oxygen content of over 10% by weight, especially perborate monohydrate granular materials with 14 to 16% by weight active oxygen. A rapidly dissolving product is produced with an acceptable apparent weight for ease in packaging.

    Process for preparation of coated peroxygen compounds
    7.
    发明授权
    Process for preparation of coated peroxygen compounds 有权
    涂层过氧化合物的制备方法

    公开(公告)号:US06239095B1

    公开(公告)日:2001-05-29

    申请号:US09348008

    申请日:1999-07-06

    CPC classification number: C01B15/005 B01J2/16 C01B15/106

    Abstract: A process for the preparation of coated peroxygen compounds, in particular sodium percarbonate, by fluidized bed coating. By using a fluidized bed reactor with a radial inflow base, the passage openings of which allow the fluidized bed gas to emerge in the region of the opening at an angle of less than 35°, measured with respect to the horizontal, in the form of directed part streams, and in which are arranged spray nozzles, the pulse of which points in the same direction as the pulse of the fluidizing gas, it is possible to obtain products with an increased active oxygen stability. A circular reactor, the inflow base of which has lamellae overlapping like turbine blades and nozzles aligned in the direction of rotation of the fluidized bed is preferred.

    Abstract translation: 一种通过流化床涂层制备涂层过氧化合物,特别是过碳酸钠的方法。 通过使用具有径向流入基底的流化床反应器,其通道开口允许流化床气体以相对于水平方向测量的小于35°的角度以开口的区域出现,其形式为 定向部件流,其中布置有喷嘴,其脉冲指向与流化气体的脉冲相同的方向,可以获得具有增加的活性氧稳定性的产物。 圆形反应器,其流入基座具有如涡轮叶片重叠的薄片和沿流化床的旋转方向排列的喷嘴。

    Coated sodium percarbonate particles, a process for their production and
detergent, cleaning and bleaching compositions containing them
    8.
    发明授权
    Coated sodium percarbonate particles, a process for their production and detergent, cleaning and bleaching compositions containing them 失效
    涂覆的过碳酸钠颗粒,其生产方法和洗涤剂,含有它们的清洁和漂白组合物

    公开(公告)号:US5658873A

    公开(公告)日:1997-08-19

    申请号:US525782

    申请日:1995-10-02

    CPC classification number: C01B15/106 C11D17/0039 C11D3/3942

    Abstract: Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents.Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali metal tetraborate or alkali metal pentaborate with aqueous hydrogen peroxide. Preferred coating components are: perborax with the formula Na.sub.2 B.sub.4 O.sub.7 .multidot.H.sub.2 O.sub.2, where n =2 or 4.The coated sodium percarbonate particles are produced by coating the percarbonate particles using a solution containing the reaction products mentioned above.Detergent, bleaching and cleaning compositions containing sodium percarbonate particles coated in accordance with the invention are distinguished by very high stability in storage.

    Abstract translation: PCT No.PCT / EP94 / 00576 Sec。 371 1995年10月2日日期 102(e)日期1995年10月2日PCT 1994年2月28日PCT PCT。 出版物WO94 / 24044 日期1994年10月27日过碳酸钠通常以涂层颗粒的形式使用,以增加其在洗涤剂中的储存稳定性。 根据本发明涂覆的过碳酸钠颗粒具有含有四碱金属四硼酸盐或碱金属五硼酸盐与过氧化氢水溶液的反应产物的涂层。 优选的涂层组分是:具有式Na2B4O7xH2O2,其中n = 2或4的perborax。涂覆的过碳酸钠颗粒通过使用含有上述反应产物的溶液涂覆过碳酸盐颗粒来制备。 包含根据本发明涂覆的过碳酸钠颗粒的洗涤剂,漂白和清洁组合物的特征在于非常高的储存稳定性。

    Method for the preparation of stabilized sodium percarbonate
    9.
    发明授权
    Method for the preparation of stabilized sodium percarbonate 失效
    制备稳定的过碳酸钠的方法

    公开(公告)号:US5632965A

    公开(公告)日:1997-05-27

    申请号:US507279

    申请日:1995-09-28

    CPC classification number: C01B15/106 C11D17/0039 C11D3/3937 C11D3/3942

    Abstract: The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na.sub.2 CO.sub.3.3 H.sub.2 O.sub.2) by coating with a sodium perborate.According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.

    Abstract translation: PCT No.PCT / EP94 / 00422 Sec。 371 1995年9月28日第 102(e)1995年9月28日PCT PCT 1994年2月15日PCT公布。 出版物WO94 / 20413 日期1994年9月15日本发明涉及一种通过用过硼酸钠涂覆来提高过碳酸钠(2 Na 2 CO 3·3H 2 O 2)的储存稳定性的方法。 根据本发明,通过碳酸钠与过氧化氢在水相中反应并将盐与水相分离得到的湿过碳酸钠盐在固 - 液分离器中用含有过硼酸钠的溶液或悬浮液处理,通过一种 置换清洗。 与先前已知的方法相反,根据本发明,通过较少量的过硼酸盐涂层获得更大的储存稳定性。

    Continuous method for preparation of granulated sodium perborate
    10.
    发明授权
    Continuous method for preparation of granulated sodium perborate 失效
    制备颗粒状过硼酸钠的连续方法

    公开(公告)号:US4968500A

    公开(公告)日:1990-11-06

    申请号:US355845

    申请日:1989-05-17

    CPC classification number: C01B15/12 B01J2/00 C01B15/126

    Abstract: The spray drying of a solution containing hydrogen peroxide and sodium metaborate to obtain primary particles which are immediately conveyed after leaving the drying zone to a granulating device and are then granulated in the presence of free and/or perborate water of crystallization. The granulated materials are dried, if necessary. The generally amorphous primary particles are converted into granulated materials with at least partially crystalline structure and significantly improved shelf life. The work is performed with advantage in a spray dryer with integrated fluid bed or in a compressing granulating device. The method is suitable for preparing perborate granulated materials with over 10% by wt., especially perborate monohydrate granular materials with 14-16% by wt. active oxygen.

    Abstract translation: 喷雾干燥含有过氧化氢和偏硼酸钠的溶液,以获得在离开干燥区之后立即输送到造粒装置的一次颗粒,然后在游离和/或过硼酸水结晶的存在下造粒。 如果需要,将造粒材料干燥。 将一般无定形的一次粒子转化成具有至少部分晶体结构并显着提高保质期的造粒材料。 在具有集成流化床的喷雾干燥器中或在压缩造粒装置中有利地进行该工作。 该方法适用于制备超过10重量%的过硼酸盐造粒材料,特别是具有14-16重量%的过硼酸盐一水合物颗粒材料。 活性氧。

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