| 摘要 |
The invention provides a process for preparing vinyl acetate in a heterogeneously catalysed, continuous gas phase process, in which a gaseous mixture comprising ethylene, acetic acid and oxygen is reacted in a fixed bed tubular reactor having reaction tubes filled with spherical supported catalysts, the gas mixture leaving the reactor (product gas stream) is worked up, and the remaining gas mixture (cycle gas), after being reloaded with ethylene, acetic acid and oxygen, is recycled into the reactor, characterized in that the spherical supported catalysts comprise two fractions having different diameter. |
