Experimental Investigation On Drying Mechanism Of Orange Peels In The Fluidized Bed

There are abundant nourishment ingredients in the residue of orange peels after ferment,which has an extensive foreground as the animal feed.The industrialization of the forage products not only can create an economic benefit but also can solve the environmental problem caused by the residue of orange peels. So it is greatly significant for the research and development on the residue of orange peels which is used as the forage. However ,the drying mechanism hasn't ready-made theories to be used ,though the dry craft is so important in the production line. Hence, the purpose of this paper lies in the drying mechanism of the residue of orange peelsAccording to the experiment result,the fluidized quality is very good in the drying process, and the effect of dry can attain an experiment request.Firstly,the method of single factor analysis was adopted to analyse the influence of drying parameters such as the air temperature , the air velocity, the height of bed layer and the initial moisture content etc. on the drying velocity and the consumption of unit energy.The result showed that the dry velocity was faster along with the rise of the air temperature or velocity; Besides,the dry velocity was slower when the height of bed layer or the initial moisture content was higher.However,The influences of these dry parameters upon the dry velocity became slowly after some minutes.Secondly,The method of orthogonal experiment was used to analyse the importance of these dry parameters on the drying characteristics.The result showed that the sequence of importance about the influences of these dry parameters on the dry velocity was following: W0> T>V >H ,while the sequence of importance about the influences of these dry parameters on the consumption of unit energy was obtained: V >T > W0>H. As well as, the conclusions of orthogonal method gave support to that of single factor analytical method. And what's more , the experiential mathematical model was build up .It explained the rule that how the drying parameters determined the drying velocity and the consumption of unit energy. Furthermore,the drying parameters were optimized by the model .As a result, the best combination of the craft parameters was found.Besides,the mechanism of heat transfer and quality transfer was analyzed on the stage of the constant velocity of dry.It was found that the value of coefficient of heat transfer under the optimum drying condition was bigger than that of literature.The results of the study can be applied to the industrialized production.It can provide the methods and the valid datas for the amplificatory design of the fluidized bed,also it is essential for the drying process to be controlled better.