Vinyl Acetate Production Patent

A process for the production of vinyl acetate is disclosed.

Vinyl acetate production patent. The process comprises reacting ethylene acetic acid and oxygen in the presence of a catalyst to produce a reaction mixture comprising vinyl acetate ethylene carbon dioxide acetic acid water and ethylene glycol diacetate. Praxair has received a patent for the use of 99 95 oxygen to lower the amount of inerts in the reactor. Disclosed is a method for controlling a vinyl acetate production process. This technique is claimed to reduce catalyst losses and undesirable reaction byproducts and boost vam yields by up to 5.

Patent 5347046 issued september 13 1994 white et al describes catalysts for the production of vinyl acetate by reaction of ethylene oxygen and acetic acid containing metal palladium group and or its connection gold and or its connection and copper nickel cobalt iron margana is availa able scientific c with the present invention. Vinyl acetate monomer vam production and manufacturing process. Vinyl acetate is the acetate ester of vinyl alcohol. A process is disclosed for the production of vinyl acetate where a mixture of ethylene acetic acid and oxygen is reacted in the presence of a catalyst to produce a product mixture of vinyl acetate ethylene carbon dioxide acetic acid water ethyl acetate and ethylene glycol diacetate.

The method comprises reacting ethylene acetic acid and an oxygen containing gas in the presence of a catalyst in a reactor to produce vinyl acetate measuring the concentration of a component involved in or associated with the reaction and or any of the subsequent steps by raman spectroscopic analysis and adjusting. The method comprises reacting ethylene acetic acid and an oxygen containing gas in the presence of a catalyst in a reactor to produce vinyl acetate measuring the concentration of a component involved in or associated with the reaction and or any of the subsequent steps by raman spectroscopic analysis and adjusting. Since vinyl alcohol is highly unstable with respect to acetaldehyde the preparation of vinyl acetate is more complex than the synthesis of other acetate esters. Disclosed is a method for controlling a vinyl acetate production process.

The product mixture contains both a gaseous phase and a liquid phase which are separated. The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. Us3277158a us287043a us28704363a us3277158a us 3277158 a us3277158 a us 3277158a us 287043 a us287043 a us 287043a us 28704363 a us28704363 a us 28704363a us 3277158 a us3277158 a us 3277158a authority us united states prior art keywords ethylene oxidation vinyl acetate line reaction medium prior art date 1963 06 11 legal status the legal status is an assumption and is not a legal conclusion.