Determination of Desorption Isotherms on the Basis of an Experimental Fluidized Bed Drying Curve

作者：Ciesielczyk Wlodzimierz^*; Iwanowski Janusz

来源：Drying Technology, 2014, 32(11): 1289-1296.

DOI：10.1080/07373937.2014.924134

• Desorption isotherms
• Fluidized bed drying
• Mathematical modeling

The method presented in this article allows for the determination of desorption isotherms. The method uses an experimental drying curve and is appropriate for materials that are classified in group B according to the Geldart classification. The method consists of applying inverse problem methodology to a mathematical model of bubbling fluidized bed drying kinetics. The obtained solution is presented in the form of equations that show relative humidity as a function of moisture content and temperature. The equations were validated experimentally by comparing the values of relative humidity determined using these equations with values obtained experimentally. The calculated values of the mean absolute percentage error (MAPE) vary between 12.95 and 15.60% depending on the tested material. It was confirmed that construction of a desorption isotherm using an experimental drying curve is possible.

• 出版日期2014