基本信息:
- 专利标题: METHOD FOR PREPARING HYDRAZINE HYDRATE
- 专利标题(英):Method for preparing hydrazine hydrate
- 专利标题(中):制备水合氢氯化物的方法
- 申请号:PCT/FR1999/001074 申请日:1999-05-06
- 公开(公告)号:WO99058446A1 公开(公告)日:1999-11-18
- 主分类号: C01B
- IPC分类号: C01B20060101 ; C01B21/16 ; C07C241/02
摘要:
The invention concerns a method for preparing hydrazine hydrate which consists in: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in the presence of a working solution to form an azine; (b) separating the working solution from the azine containing methyl ethyl ketone oxime and optionally the methyl ethyl ketone which has 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. Said method is characterised in that in step (d) the methyl ethyl ketone oxime is purged.
摘要(中):
本发明涉及一种制备水合肼的方法,其包括:(a)在工作溶液存在下使氨,过氧化氢和甲基乙基酮反应形成吖嗪; (b)将工作溶液与含吖嗪甲基乙基酮肟和任选的未反应的甲基乙基酮分离; (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。 所述方法的特征在于,在步骤(d)中,清除甲基乙基酮肟。