Simulation of coated paper drying and presentation of its experimental model

Document Type : Original Paper


School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran


In this study, a simulation model which integrates the mechanism of heat and mass transfer in drying the coated paper is presented. In the simulation model, the paper divided to three layers, coated paper, wet base paper and dry base paper, where each thickness of layer is a function of drying conditions and time. The effects of fluid temperature, fluid type, time delay and the suspension, are studied. Two type of fluid (air and steam) in 200 ° C, 160° C, and 120 ° C were used. The delay time of 0.2 and 0.4 seconds were considered in accordance with industry requirements. Also, two type of suspension with different viscosity were used. Coated paper, divided to eight parts, and write the equation of mass and energy transfer are solved for each layer, the temperature and humidity of each layer were calculated.


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