In Pervaporation, Vapour Permeation and Membrane Distillation Woodhead Publishing: Oxford, UK, 2015 pp. Thesis, Budapest University of Technology and Economics, Budapest, Hungary, 2015. Liquid Waste Treatment with Physicochemical Tools for Environmental Protection. Comparison of pervaporation models with simulation of hybrid separation processes. Modelling of pervaporation: Parameter estimation and model development. Improvement of Component Flux Estimating Model for Pervaporation Processes. Permeate concentration in Membrane Flash Index (MFLI)Įquilibrium distillation value in Membrane Flash Index (MFLI)Īverage activity coefficient of component iĪctivity coefficient of component i in the feed Vapour-liquid equilibrium (VLE) diagram ( Figure 5) Permeate n-propanol and water weight fraction in y − x Permeability of the porous supporting layer of the membraneįeed n-propanol weight fraction in y − x vapour-liquid equilibrium (VLE) diagram ( Figure 5) Partial pressure of component i on the vapour phase membrane side Partial pressure of component i on the liquid phase membrane side Relative transport coefficient of component iĪctivation energy of component i in Equation (12) for temperature dependence of the transport coefficient The author declares no conflict of interest. It can be concluded that the process can dehydrate n-propanol with a purity of 99.9 percent. The main objective functions of the hybrid method are the number of minimal theoretical stages and the minimal membrane area. The distillation-based hybrid method without an extra added extractive agent for separating the n-propanol–water mixture has not yet been published in this computer program. The hybrid distillation and pervaporation system is rigorously modelled in a professional flowsheet environment (ChemCAD) and optimized with the dynamic programming optimization method. It has been established that the model can also be used for this case. The experimental data from pervaporation measurements were evaluated with the improved model by Szilagyi and Toth. First in the literature, this binary system’s Membrane Flash Index (MFLI) is also determined, confirming the efficiency of pervaporation against flash distillation. Different evaluation parameters (selectivities, separation factors, and total fluxes) were experimentally determined. To accomplish this problem, the pervaporation process intends to apply PERVAP™ 1201 type dehydration membranes and to obtain information about the water removal from an aqueous mixture of n-propanol. This work is motivated by a fine chemical industry task where n-propanol should be separated from its aqueous mixture.
0 kommentar(er)
