Recovery of acetyl values from ethylidene diacetate

Details Recovery of acetyl values from ethylidene diacetate Recovery of acetyl values from ethylidene diacetate

1991-05-29

1992-12-29

Dees, Josacu G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562608, C07C 5308, C07C 5142

Patent

active

051753626

ABSTRACT:
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.

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patent: 4559183 (1985-12-01), Hewlett
patent: 4898644 (1990-02-01), Van Horn

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