-
公开(公告)号:US5175362A
公开(公告)日:1992-12-29
申请号:US706662
申请日:1991-05-29
申请人: Carl F. Fillers , Eric D. Middlemas , Hugh M. Thompson, Jr. , Jerry A. Barron , William T. Brown
发明人: Carl F. Fillers , Eric D. Middlemas , Hugh M. Thompson, Jr. , Jerry A. Barron , William T. Brown
IPC分类号: B01J31/00 , C07B61/00 , C07C45/42 , C07C47/06 , C07C51/09 , C07C51/235 , C07C51/487 , C07C53/08
CPC分类号: C07C51/09 , C07C51/235
摘要: Disclosed is a process for the recovery of acetyl values from an ethylidene diacetate stream obtained from an acetic anhydride production system. The process comprises hydrolyzing ethylidene diacetate in a liquid phase, hydrolysis zone containing a non-volatile, acidic catalyst and maintained under boiling conditions to obtain a mixture of acetaldehyde, acetic acid and water and then oxidizing the mixture in a liquid phase, oxidation zone containing a cobalt oxidation catalyst to obtain a mixture of acetic acid and water. The process optionally includes a means for reducing substantially the concentration of iodine in the EDA used in the process.
摘要翻译: 公开了从乙酸酐生产系统获得的乙叉二乙酸物流中回收乙酰值的方法。 该方法包括在液相中水解亚乙基二乙酸酯,含有非挥发性酸性催化剂的水解区,并保持在沸腾条件下,得到乙醛,乙酸和水的混合物,然后在液相中氧化混合物,含有 钴氧化催化剂,以获得乙酸和水的混合物。 该方法任选地包括用于在该方法中使用的EDA中基本上减少碘浓度的方法。