Establishment of Drying Model for Mixed Tobacco Strips

In order to study the drying characters of tobacco of different makeup,the changes of moisture content in C2F strips from Pingdingshan and Zhumadian,Henan,and their mixtures at the mass ratios of 2:1,1:1 and 1:2 during drying were investigated.Five conventional drying models were compared,and then a mathematical model was established to describe the drying characters of the mixtures of strips.The results showed that:1) Newton thin layer drying model was determined as the basic model.2) The distribution coefficient in the dynamic drying model contained two factors,initial moisture content and equilibrium moisture content of the dried strips.3) The relative error between the fitted values of Newton model parameters and the calculated values of drying model parameters were less than 5%,the established mathematical model could predict the drying dynamic parameters of mixed strips and evaluate the drying characters of mixed strips.