| Fixed bed reactor is adopted in methyl acetate recovery technology in the traditional polyvinyl alcohol (PVA) and pure terephthalic acid (PTA) industry production process. A large quantity of energy and de-ionized water is consumed in the old process. The purpose of this thesis is to apply catalytic distillation mathematical model to the old process of methyl acetate hydrolysis and bring forward a new flow chat simultaneously. This thesis develops a new catalytic distillation packing.The basic data of thermodynamics, kinetics and catalytic packing is used in this thesis to simulating the process of methyl acetate hydrolysis of catalytic distillation by chemical engineering simulation software. The feeding position of methyl acetate and water from overhead, the ratio of water to methyl acetate in feed reaches 0.8 and the ratio of top reflux to feed methyl acetate ranges from 2.5 to 3.0 are obtained by the tool of sensitivity analysis of software. By comparing the simulation results and experimental results, the validity of the mathematical model is also validated.Two new processes for hydrolysis of methyl acetate were proposed on the basic of the process simulation. There new processes were based on enhancing the pressure of tower and side withdrawing on the catalytic distillation tower. Results from investigation of the two new processes of energy consumption on difference conversion show that two new processes are favorable to the process of hydrolysis of methyl acetate.The hydrodynamic performance of a new catalytic distillation packing, catalysts loading structure of the form catalysts net box, is studied in a cold model column with air and water as mediums on the basis of studying and analysis to the catalytic packing. The experiment result and the experimental data comparing with catalytic packing of bind package in literature were given. The new catalytic packing had the advantages of low pressure-drop per bed height and high gas velocity of flooding.
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