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1.发明授权Process for the recovery of cyclohexanone oxime by plural stage, vacuum distillation per a 失效通过一级循环恢复环己酮氧化酶的方法，每次真空蒸馏
公开(公告)号：US3625835A
公开(公告)日：1971-12-07
申请号：US3625835D
申请日：1970-06-15
Applicant: STAMICARBON
Inventor： TERVOORT ADRIANUS , BALG THEODORUS
IPC: B01D3/10
CPC classification number: C07C29/80
Abstract: There is disclosed a continuous process for preparing cyclohexanone oxime by reacting cyclohexanone with a solution of a hydroxylammonium salt derived from a weak acid, e.g. phosphoric acid. The reaction takes place in counterflow contact, and in the presence of a water-immiscible or poorly water-miscible organic solvent for the oxime formed. An improved process for accomplishing separation of the resulting oxime from the solvent by rectification and apparatus suited for realizing this process.
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