Simulation And Optimization Of The Reactor And The Synthetic Technique Of Industrial Vinyl Acetate

Vinyl acetate (VAc) is one kind of important organic chemical raw materials,specially,vinyl acetate can be created with the application broad derivatives through its own polymerization or together with other monomer copolymerization. Vinyl acetate of production methods have the acetylene, the ethylene as well as a carbon chemical method and so on,vinyl acetate industry development has the broad prospect.The craft of vinyl acetate synthesis is briefly introduced, and emphatically introduced the Hunan XiangWei limited company of technical process of the synthesis of vinyl acetate via the vaporous acetylene method. Meanwhile,two kinds of different craft technologies,the acetylene method and the ethylene method,are compared,and has differently carried on the introduction in view of the synthesis vinyl acetate catalyst.Through consulting literature materials, the reaction mechanism of the synthesis of vinyl acetate via the vaporous acetylene method is analyzed,and the synthesis of vinyl acetate is thought to the acetylene on catalyst surface adsorption,the reaction to acetic acid is approximate zero order,to the acetylene is approximate an order. This article carries on the analysis of the operation data to the Hunan XiangWei limited company acetic acid ethylene synthesis workshop section,which obtains in the vinyl acetate synthesis process, along with the reaction temperature,a feeding acetylene acetic acid mole of ratio, catalyst load capacity increasing, the acetic acid conversion rate and space time yield all increase,at the same time,the by-product also increases along with it. In view of this question,the gas separation tower technical process has been made the improvement in the synthesis workshop section, which causes the by-product reduction in the recycle gas, enhancs the catalyst life in the fluidized bed reactor, the product quality also have the enhancement.On the base of the operation data analysis,two models and K-L model are separately utilized to carry on the acetic acid conversion rate analog computation in the fluidized bed reactor,the computation analogue results indicate that two models is close to the actual operation data, and this article has analyzed the operation parameter:the response temperature of fluidized bed reactor,the feeding acetylene acetic acid mole of ratio, catalyst load capacity and the height of fluidized bed reactor influence on acetic acid conversion rate. At the same time, the Powell algorithm is...