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    Process for the preparation of alkali metal acetates
    4.
    发明授权
    Process for the preparation of alkali metal acetates 失效
    碱金属乙酸盐的制备方法

    公开(公告)号：US5496482A

    公开(公告)日：1996-03-05

    申请号：US984330

    申请日：1992-12-02

    申请人： Gerhard Bettermann ,  Gu/ nther Schimmel ,  Johannes Himmrich

    发明人： Gerhard Bettermann ,  Gu/ nther Schimmel ,  Johannes Himmrich

    IPC分类号： C09K3/18

    CPC分类号： C09K3/18

    摘要： To prepare a corrosion-inhibiting liquid de-icing agent based on alkali metal acetates, 30 to 50 percent strength by weight alkali metal hydroxide solution is introduced into a reaction container provided with a cooling device and a mixing device, and 85 to 100% strength acetic acid is metered into the reaction container until the ratio by weight of acetic acid to alkali metal hydroxide solution therein (0.30 to 0.45):1. A portion of this solution is transferred from the reaction container to a stirred dissolving tank and 0.03 to 1% by weight, relative to the batch, of benzotriazole and/or tolyltriazole and/or imidazole is dissolved therein. The resulting solution containing azole is introduced into the reaction container along with 0.01 to 0.2% by weight of phosphoric acid, relative to the batch. Acetic acid continues to be metered into the reaction container until the density of the solution in the reaction container is 1.07 to 1.39 g/cm.sup.3 at 20.degree. C. Small amounts of alkali metal hydroxide solution or acetic acid are then introduced into the reaction container until the pH of the solution therein is 9.2 to 9.8. Finally, this solution is withdrawn from the reaction container as a liquid de-icing agent.

    摘要翻译： 为了制备基于碱金属乙酸盐的腐蚀抑制液体除冰剂，将30-50％重量的碱金属氢氧化物溶液引入设置有冷却装置和混合装置的反应容器中，并将85至100％的强度 将乙酸计量加入到反应容器中，直至乙酸与其中的碱金属氢氧化物溶液的重量比（0.30至0.45）：1。 将该溶液的一部分从反应容器转移至搅拌溶解槽，相对于该批次为0.03〜1重量％的苯并三唑和/或甲苯基三唑和/或咪唑溶解于其中。 将含有唑的所得溶液相对于批料与0.01至0.2重量％的磷酸一起引入反应容器中。 乙酸继续计量加入到反应容器中，直到反应容器中的溶液的密度在20℃下为1.07至1.39g / cm 3。然后将少量碱金属氢氧化物溶液或乙酸引入反应容器中直到 其溶液的pH值为9.2〜9.8。 最后，将该溶液作为液体除冰剂从反应容器中取出。

    Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent
    5.
    发明授权
    Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent 失效
    基于乙酸的液体清除剂和用于在该助剂的助催化剂下，将雪和冰与交联表面熔融的方法

    公开(公告)号：US5238592A

    公开(公告)日：1993-08-24

    申请号：US787370

    申请日：1991-11-04

    申请人： Achim Stankowiak ,  Josef Kapfinger ,  Gerhard Bettermann

    发明人： Achim Stankowiak ,  Josef Kapfinger ,  Gerhard Bettermann

    IPC分类号： C09K3/18 ,  E01H10/00

    CPC分类号： C09K3/185 ,  C09K3/18

    摘要： The de-icing agent described comprises an aqueous solution of at least one alkali metal acetate or at least one alkaline earth metal acetate or a mixture of the two and water as the main components, and 0.01 to 1% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and, if appropriate, 0.01 to 0.5% by weight of at least one alkali metal phosphate as inhibitors. The process described for melting snow and ice on traffic surfaces comprises application of an effective amount of the novel de-icing agent to the ice- and/or snow-covered surfaces to be treated.

    摘要翻译： 所描述的除冰剂包括至少一种碱金属乙酸盐或至少一种碱土金属乙酸盐或两者和水的混合物作为主要组分的水溶液，和0.01至1重量％的至少一种水 可溶性三唑化合物或至少一种水溶性咪唑化合物或两者的混合物，如果合适的话，以0.01至0.5重量％的至少一种碱金属磷酸盐作为抑制剂。 描述用于在交通工具表面上融化雪和冰的过程包括将有效量的新颖除冰剂施加到待处理的冰和/或积雪的表面上。

    Continuous process for complete removal or organic impurities from and complete decolorization of prepurified wet-process phosphoric acid
    8.
    发明授权
    Continuous process for complete removal or organic impurities from and complete decolorization of prepurified wet-process phosphoric acid 失效
    用于完全去除或有机杂质的连续方法和完全脱湿的湿法磷酸完全脱色

    公开(公告)号：US4906445A

    公开(公告)日：1990-03-06

    申请号：US311640

    申请日：1989-02-16

    申请人： Gunther Schimmel ,  Gerhard Bettermann ,  Gero Heymer ,  Friedrich Kolkmann

    发明人： Gunther Schimmel ,  Gerhard Bettermann ,  Gero Heymer ,  Friedrich Kolkmann

    IPC分类号： C01B25/234 ,  C01B25/235 ,  C01B25/46

    CPC分类号： C01B25/461 ,  C01B25/235

    摘要： A continuous process is indicated for complete removal of organic impurities from and complete decolorization of pre-purified wet-process phosphoric acid which has been purified by an extractive method using an organic solvent, freed from residual hydrofluoric acid by steam stripping and treated with hydrogen peroxide at elevated temperature, which comprises mixing the pre-purified wet-process phosphoric acid and the hydrogen peroxide in a mixing zone at a temperature of from 100.degree. to 200.degree. C., preferably 140.degree. to 160.degree. C., and allowing them to react at this temperature for a further 1 to 4 hours, cooling to from 85.degree. to 90.degree. C. the pre-purified wet-process phosphoric acid treated in this way and pumping it at this temperature with exclusion of air firstly through an activated charcoal bed which has been prepared on the basis of peat and has been steam-activated and has a BET surface area of from 800 to 1000 m.sup.2 /g, and subsequently through a silicon carbide and/or graphite bed while maintaining a pumping rate of less than 0.5 m.sup.3 /h of wet-process phosphoric acid per m.sup.3 of activated charcoal bed.

    摘要翻译： 指示完全除去有机杂质并完全脱色预纯化的湿法磷酸的连续方法，其通过萃取方法使用有机溶剂纯化，通过汽提除去残留的氢氟酸并用过氧化氢处理 在高温下，其包括在预先纯化的湿法磷酸和过氧化氢的混合区中在100至200℃，优选140至160℃的温度下混合，并使它们 在该温度下再反应1至4小时，冷却至85℃至90℃，预纯化的湿法磷酸以此方式处理并在该温度下泵送，首先通过活性炭排除空气 基于泥炭制备并已蒸汽活化并具有800至1000m2 / g的BET表面积的床，随后通过碳化硅和/或石墨b 同时保持每立方米活性炭床的湿法磷酸的泵送速率小于0.5m 3 / h。