Analysis of Cylinder Drying Intensity of Cut Tobacco Based on Enthalpy Method

Cylinder drying of cut tobacco is one of the key processing technologies in cigarette manufacturing. And complex mass transfer and heat transfer phenomena were involved. In this paper, a thermodynamic model have been built for cut tobacco during cylinder drying process. The relationship of different process parameters and thermodynamic data were analyzed by canonical correlation method, including amount of heat Qv produced in moisture evaporation of cut tobacco, amount of heat Qs produced in temperature increase of cut tobacco, total amount of heat Q and thermal efficiency coefficient η. The results showed that the thermodynamic model explained the actual cut tobacco heating and heat distribution well in the cylinder drying process. The variation coefficients of the four thermodynamic parameters of cut tobacco under the same processing conditions were all less than 5.0%. It is proved that the thermodynamic model established during cylinder drying process of cut tobacco is feasible.