AN EXPERIMENTAL STUDY ON DRYING KINETICS OF 15 KINDS OF CUT TOBACCO IN THE TG DRIER

摘要：

The convection drying is widely used in tobacco process. The properties of drying medium and materials are key factors which affect the drying rate of tobacco materials. The research on the drying kinetics of cut tobacco is the basic of characterizing of tobacco drying rate, which is beneficial to optimize the parameters in the tobacco process. In this study, the effect of temperature（80℃～120℃） and humidity of drying medium （0kg/kg～0.4kg/kg）on drying process were investigated in the on-line drying equipment (based on the TG method) for 15 kinds of cut tobacco, and the drying kinetics model was found based on the modified Fick’s second law. The effective diffusivity Deff was calculated by non-linear fitting method, which can describe the drying process. The Apparent activation energy Ea can be obtained from the effective diffusivity Deff in the different temperatures, which can be used to compare the different drying characteristic of tobacco. The values of activation energy E0 are obtained between 20.01 and 26.06 for 15 kinds of cut tobacco from the drying kinetics model. The results indicated that the types of cut tobacco affected significantly its drying characteristics.

关键词： Thermal Gravity drier Convection Drying Process drying kinetics cut tobacco

作者: Bin Li Hongsheng Wang Duanfeng Lu Xiangjun Liu Bibo Zhou Yi An Lanxiao Zhang

作者单位: Key Laboratory of Tobacco Processing Technology, CNTC, Zhengzhou , China 450001 Key Laboratory of Tobacco Processing Technology, CNTC,Zhengzhou , China 450001 Technology Center,Heilongjiang Tobacco Industrial Co., Ltd Harbin, China, 150001 Technology Center, Heilongjiang Tobacco Industrial Co., Ltd Harbin, China, 150001 Nanjing cigarette factory, Nanjing, China, 210019

会议类型: 国际会议

会议名称: The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)

会议地点: 北京

会议语种:英文

页码: 465-470

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）