Mathematical modeling of DMF and AN absorptions in packed towers in Acrylic No.1 unit of Iran Polyacryl Corporation

In this study, mathematical modeling and simulation of Dimethylformamide (DMF) and Acrylonitrile (AN) absorber columns of Acrylic No. 1 unit of Iran Polyacryl Corporation were performed. An investigation and comparison of different activity coefficient models and equation of states showed that NRTL model for predicting activity coefficient and PRSV for equation of state were suitable for DMF-water. For an AN-water solution, Van Laar and Redlich-Kister were suitable for predicting activity coefficient and PRSV for equation of state. The results of the model were compared with the data obtained from the plant. It was shown that the results of solution of basic equation were influenced with different correlation for predicting of mass and heat transfer coefficient, effective area of heat and mass transfer as well as geometric structure of the packing. The effects of different operation parameters on the result of the model such as separation efficiency are also investigated.