The main subject of this thesis is examination of equilibrium and adsorption rate of normal paraffins in the range of 10-14 carbons at 25bar and 180°C with 5A molecular sieve. The results achieved from special experimental system designed, showed suitable adsorption equilibrium results compared with Langmuir Isotherm, which selected as equilibrium adsorption model. Adsorption capacity of normal paraffins at 180°C determined to be 0.158 normal paraffin per unit mass of molecular sieve. Effects of other operational parameters are also studied on breakthrough curve, which yields to adsorption rate constants of normal parrafins. An Efficient dynamic model of adsorption process in a moving bed is also presented.In this model according to high value of Peclet number, axial dispersion tends to be negligible. This model is used to simulate p-Xylene separation process from other 8-Carbon aromatics with Parex technology. Same simulation is also performed for MOLEX unit. Results show suitable match with the researches. Using this model, the effective parameters are also studied on purity and recovery of p-Xylene witch shows best rotary valve switch time is about 1.1-1.15 minutes. Comparing the results with thoseobtained with the other researches,indicates a considerable decrease in simulation execution time.
