Abstract:The benzyl acetate is one kind of commonly used spice, This design selects the chlorination animal pen and the sodium acetate in shifts under the catalyst phenmethyl triethyl ammonium chloride function the esterification production benzyl acetate. This process operation is simple, in the temperate reacting system, the catalyst and the surplus reactant sodium acetate, the water may circulate the use, enhanced the efficiency, reduced the cost, reduced the pollution. According to a experimental technical document, a yearly products of 5000 tons of tolclofos-methyl is designed. The design mainly includes the material balance, the energy balance, body, the workshop decoration etc.According to the the process characteristics, we definite the reaction cycle for 8 hours each time, everyday 3pass. According to the results of balance, We design the kettle ,also definite a Reactor of 8 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, the production craft the response flow diagram, the workshop general arrangement and the response cauldron body are given.