| Popis: |
Pervaporation is a separation method that is considered as green technology because of its low energy consumption. The mechanism of component separation in a liquid mixture by pervaporation is complex but it can be explained with the solution-diffusion mechanism. The work is motivated by an industrial separation problem, that is, ethyl acetate removal from aqueous mixture. To complete this goal hybrid organophilic/hydrophilic pervaporation of ethyl acetate/water mixture through commercially available Sulzer PERVAP™ 4060 and 1510 membranes are investigated to obtain information about the removal of ethyl acetate. Our experimental data are evaluated with the pervaporation model of our improvement (Valentinyi et al., 2013) and it is found that the model can be applied also for both cases. The hybrid separation process is rigorously modelled in professional flowsheet environment, and optimized with the dynamic programming optimization method. The objective function is product purity of 99.0, 99.5 m/m% in water and ethyl acetate content and the total annual cost is also determined. It can be determined, this hybrid separation should be become the alternative of distillation if the energy prices are too high. |
