AN ANAYTICAL METHOD FOR DEEP-BED VENTILATING DRYING PROCESS

摘要

The deep-bed drying is an integrated process affected by many different factors. In this regard, the nature of deep-bed drying phenomenon was discussed, and the models andmass equilibrium equations for deep-bed hot-air drying process were constructed for thestudy. The material dehydration process, medium humidification process and systemequilibrium were analyzed. The dimensionless numbers were introduced to simplify andsolve the differential equations of deep-layer drying. Furthermore, the analytical formulaand solution of the deep layer hot-air drying process were given. The results provided akind of simple and practical analytical formula and calculation method, which are thebase to hold the characteristics of deep-layer drying system well, and realize the accuratecontrol of process.