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    • 6. 发明授权
    • Method for preparing hydrazine hydrate
    • 水合肼的制备方法
    • US06482383B1
    • 2002-11-19
    • US09674574
    • 2000-10-31
    • Jean-Pierre Schirmann
    • Jean-Pierre Schirmann
    • C01B2116
    • C01B21/16
    • A method for preparing hydrazine hydrate comprising: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in a working solution to form an azine; (b) separating the working solution from a mixture comprising the azine, methyl ethyl ketone oxime and optionally the methyl ethyl ketone which had not reacted; (c) recycling the working solution to step (a) after an optional treatment; (d) hydrolyzing the azine to obtain hydrazine hydrate and regenerating the methyl ethyl ketone; (e) recycling to step (a) the methyl ethyl ketone. In step (d) the methyl ethyl ketone oxime is purged.
    • 一种制备水合肼的方法,包括:(a)在工作溶液中使氨,过氧化氢和甲基乙基酮反应形成吖嗪; (b)从包含吖嗪,甲基乙基酮肟和任选的未反应的甲基乙基酮的混合物中分离工作溶液; (c)在任选处理之后将工作溶液循环到步骤(a); (d)水解吖嗪以获得水合肼并再生甲基乙基酮; (e)回收步骤(a)甲基乙基酮。 在步骤(d)中,清除甲基乙基酮肟。