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This experiment the pervaporation membrane used in the esterification reaction which used NaA zeolite membrane and a polyvinyl alcohol (PVA) film as a dehydration membrane, the pervaporation and separation selection characteristics, in order to optimize the operating conditions of the esterification reaction, the maximum limits to increase the esterification yield. First electron microscopy analysis of the inorganic film-NAA zeolite membrane and the organic film - polyvinyl alcohol (PVA), the structural characteristics of the film, and for the solution of ethanol / water binary examine its separation performance, the concentration of raw materials, process parameters such as pressure and temperature, permeate flux and separation factor and pervaporation separation index (PSI), the impact of the separation performance. And then to the synthesis of n-butyl acetate to the target reaction, systematic investigation pervaporation membrane used in the esterification reaction process in the various process parameters, such as the raw material liquid acid, the molar ratio of the alcohol, the membrane area and the reaction mixture volume the ratio of the size of the membrane permeate flux reaction separation temperature of the esterification reaction. The experimental results show that NaA zeolite membrane used in the esterification reaction: the reaction conditions to a temperature 105 ° C, the reactant feed alkyd ratio of 1.5, the amount of catalyst was 5 wt% of the total mass of the raw material liquid, the membrane area with the reaction liquid volume ratio of 32.76 , the esterification yield reaches the maximum value, compared with not using the membrane reactor, the esterification reaction, the esterification yield is increased by 27.68%, compared to an esterification reaction using the trap, the esterification yield also increased the 7.64%. The first penetration of the PVA film of water than the organic material, the film on the order of the selective permeation of the four components: water gt; Titanium gt; butanol GT; Titanium Dioxide, and this film on the water has a special selective. The results showed that the PVA film is used for the esterification reaction, at a temperature of 80-90 ° C, the reaction feed alkyd ratio of 1.5, the amount of catalyst was 5 wt% of the total mass of the raw material liquid, membrane area with the reaction liquid volume ratio of 28.4, an ester of the yield reaches the maximum value, compared with the the unused membrane reactor esterification reaction, the esterification yield is increased by 28.72% compared to with trap esterification reaction, the esterification yield also increased by 8.98% . Pervaporation relational According to the material balance, the esterification reaction kinetics and quaternary system, the establishment of a mathematical model of the integrated process of pervaporation butyl acetate esterification reaction, regression model parameters and by solving the model theory to study and predict the impact of the four parameters of the integration process. Dynamics differential equations of the software to solve the integration process and verify the calculated results were compared with experimental values, the study focused on the impact of various process parameters on the integration process, so as to provide a reference for the industrial production.
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