Abstract:The Phenylacetate also calls Benzene acetic acid or formic acid benzyl, this paper choose Carbonyl chloride synthesis as the production process for this design through comparison of a few craft process. Use the Chloride, sodium hydroxide and carbon monoxide as raw materials, taking the Cobalt Carbonyl as catalyst to produce Phenylacetate. The craft process for Phenylacetate is a valid path of high produce, superior quality and low cost for the process is simple and product purity is high. We Designed a Production workshop for Phenylacetate of 1800 t/a for annual output, and studyed the materials, calories, body, the workshop decoration etc. According to the the process characteristics, we definite the reaction cycle for 16 hours each time, everyday 1 pass. According to the results of balance, We design the kettle ,also definite a Reactor of 10 cubic meters, though Mass Balance, quality that materials needed each time, and though Heat Balance, calories that needed to deliver, the design also included the body each parts of sizes 、raw materials storage, pumps, distillation columns and other equipment, and so on. Finally, a flow chart of the reaction, a workshop layout diagram and a reaction kettle assembling drawing are given. Keywords:Phenylacetate;Mass Balance;Heat Balance;Kettle Design;Workshop Layout