The Catalytic Reaction Distillation Technology In The Process Of Hydrolysis Of Methyl Acetate

The exploitation and application of catalytic distillation (CD) technique have been paid much attention by many academies and graduate schools. Some achievements have been acquired in some industry fields. Fixed bed reactor is adopted in methyl acetate recovery technology in the traditional polyvinyl alcohol (PVA) 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 CD technique to the old process of methyl acetate hydrolysis. In order to prepare for future industry process, we checked the mathematical model that has been established by our experiments.This work contains two parts. First, the feasibility of the chemical process simulation by Aspen Plus software was validated through the stimulation of distillation column. It was found that new flow chat has little impact on the whole system and can achieve main technic requirements. The mathematical model can have good agreement with the experiment results.Secondary, we carried out the experiments of methyl acetate hydrolysis in the pilot plant. By comparing the simulation results and experimental results, the validity of the CD mathematical model is also validated. It is concluded that this model can be helpful to the industry production through controlling the holdup liquid.After middle experiments and simulation, some engineering problems, which did not appear in the lab experiments, are found and improved. At the same time, all kinds of property indexes of catalyst are researched, especially the life span of using. Till now, the catalysfs life span of using is good enough, but the separation efficiency is not so good that a new kind of catalyst should be found.