Process for selective removal and destruction of hydrogen cyanide from
nitrous-containing gases
    4.
    发明授权
    Process for selective removal and destruction of hydrogen cyanide from nitrous-containing gases 失效
    从含氮气体中选择性除去和破坏氰化氢的方法

    公开(公告)号:US4910003A

    公开(公告)日:1990-03-20

    申请号:US348839

    申请日:1989-04-08

    IPC分类号: B01D53/54

    CPC分类号: B01D53/54

    摘要: Process for selective removal and destruction of hydrogen cyanide contained in nitrous gases, in which the nitrous-containing gases are washed with nitric acid in counter-current in an absorption column and the nitric acid charged with hydrogen cyanide is regenerated at elevated temperature, with simultaneous hydrolysis and oxidation of the hydrogen cyanide.

    摘要翻译: 用于选择性除去和破坏含氮气体中的氰化氢的方法,其中含氮气体在吸收塔中用硝酸洗涤,逆流洗涤,加入氰化氢的硝酸在升高的温度下再生,同时 氰化氢的水解和氧化。

    Process for preparing pure diacetonitrile
    7.
    发明授权
    Process for preparing pure diacetonitrile 失效
    纯二乙腈制备方法

    公开(公告)号:US4510099A

    公开(公告)日:1985-04-09

    申请号:US523623

    申请日:1983-08-15

    申请人: Gerhard Stern

    发明人: Gerhard Stern

    CPC分类号: C07C255/00

    摘要: Acetonitrile and molten sodium are reacted at a temperature of 96.degree.-140.degree. C. in the presence of an organic solvent which is inert to sodium, to give the sodium salt of diacetonitrile, the salt is hydrolyzed with water, the aqueous and the solvent phases are separated off, and very pure diacetonitrile crystallizes out in cold water.

    摘要翻译: 乙腈和熔融的钠在96°-140℃的温度下,在对钠惰性的有机溶剂的存在下反应,得到二乙腈的钠盐,该盐用水,水溶液和溶剂水解 分离相,非常纯的二乙腈在冷水中结晶出来。

    Micromembrane pump
    8.
    发明授权
    Micromembrane pump 失效
    微膜泵

    公开(公告)号:US5725363A

    公开(公告)日:1998-03-10

    申请号:US669106

    申请日:1996-06-24

    CPC分类号: F04B43/043

    摘要: In a micromembrane pump with pump housing top and bottom parts and a membrane structure disposed between the housing top and bottom parts such that pump chambers, valves, flow channels and a cavity system are formed between the membrane structure and the housing parts, heating means are disposed on the membrane structure in the area of the pump housing for operating said pump and the cavity system is filled with a cement for joining the membrane and the housing parts.

    摘要翻译: 在具有泵壳体顶部和底部的微膜泵和设置在壳体顶部和底部之间的膜结构,使得在膜结构和壳体部件之间形成泵室,阀,流动通道和空腔系统,加热装置 设置在泵壳体的用于操作所述泵的区域中的膜结构上,并且空腔系统填充有用于接合膜和壳体部件的粘合剂。