Abstarct: In this research in order to study of effective parameters on energy and exergy efficiency,themodeling and analysisof fluidized bed dryer of Bandar Imam Petrochemical Complexis performed. By development of a commercial codethe study feasibility of moisture transfer in each phase and exchange between phasesis providedfor simulation results improvementand approach to the experimental results. Accordingly by extracting the temperature distribution and heat transfer with changes in humidity of dryer, difference between the modeling and the experimental results is about 1% that represents significant fitness with similar works. The results also express that increase in inlet air and heat exchanger hot water mass flow rates, reduce efficiency while increment in the mass flow rate and temperature of products increase theefficiency. The results of this researchfor the mentioned petrochemical complexshow that with the 15 %increase in mass flow rate of inlet product, overall efficiency of the dryer rises from 38.62 % to %42 and exergy efficiency increases from 35.16 % to 39.5 %while the product moisturedecreases 18%.