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dc.contributor.author陈国钦
dc.contributor.author李巧灵
dc.contributor.author陈河祥
dc.contributor.author曾强
dc.contributor.author邓惜汝
dc.contributor.author车黎明
dc.contributor.author陈晓东
dc.contributor.author李跃锋
dc.date.accessioned2018-11-26T07:26:40Z
dc.date.available2018-11-26T07:26:40Z
dc.date.issued2017
dc.identifier.citation烟草科技,2017,(6):61-67
dc.identifier.issn1002-0861
dc.identifier.other10.16135/j.issn1002-0861.2016.0416
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/162788
dc.description.abstract为了获得最适用于烟草干燥的动力学模型,达到设计、优化和控制烟草干燥过程的目的,采用湿度发生器联用热重技术(TGA)研究了65 ℃ &RH; 15%, 75 ℃ & RH 10%和85℃& RH 5%条件下片烟的干燥动力学行为,并利用REA (Reaction engineering; approach)以及8种经验或半经验的薄层干燥模型分别对不同温湿度条件下的片烟干燥行为进行模拟。结果表明:①干燥温度越高,相对湿度越小时,片烟; 的干燥速率越快,平衡含水率越低;②REA模型预测的片烟干燥动力学曲线与实验曲线能够很好地吻合,尤其是在含水率由20%降至12%阶段;8种薄层干燥; 模型中Two; term模型拟合出的R~2值最大,均方根误差(RMSE)最小,是描述片烟干燥行为较合适的模型;③薄层干燥模型仅仅是获得特定温湿度条件下相对应的动; 力学参数,而REA模型是将温度和湿度作为变量引入模型中,模型中的动力学参数可以描述任意温湿度条件下的片烟干燥动力学行为;④REA模型构造简单,预; 测准确快速,较Two term模型更具有普适性、实用性。
dc.description.abstractIn order to select a kinetic model best fit for the design, optimization; and control of tobacco drying process, the drying kinetic behavior of; tobacco strips under the conditions of 65 ℃ & RH 15%, 75 ℃ & RH10%, 85 ℃; & RH 5% was investigated with a humidifier combined with TGA; (Thermogravimetric analyzer). The drying behavior of tobacco strips was; simulated by REA (Reaction engineering approach) model and eight; selected thin layer drying models (semi-empirical or empirical). The; results showed that: 1) With the rise of temperature and decrease of; humidity, the drying rate of strips raised and the equilibrium moisture; content of strips lowered. 2) The drying kinetic curves predicted by REA; model well agreed with experimental curves, especially at the stage when; the moisture content decreased from 20% to 12%. Among eight thin layer; drying models, Two term model was the best for predicting the drying; behavior of strips with the highest R~2 (determination coefficient) and; the lowest RMSE (root mean square error). 3) Thin layer drying model; reflected only the kinetic parameters corresponding to specified drying; conditions, while in the REA model the temperature and humidity served; as variables, it enabled the kinetic parameters in REA model to describe; the drying kinetic behavior at any drying condition. 4) REA model was; simple in structure, fast and accurate in prediction, more universal and; practical than Two term model.
dc.description.sponsorship福建中烟工业有限公司科技项目
dc.language.isozh_CN
dc.subject片烟
dc.subject干燥动力学
dc.subject湿度发生器
dc.subject热重技术
dc.subjectREA模型
dc.subject薄层干燥模型
dc.subjectStrip
dc.subjectDrying kinetics
dc.subjectHumidifier
dc.subjectTGA
dc.subjectREA model
dc.subjectThin layer drying
dc.subjectmodel
dc.title基于片烟干燥动力学的REA模型与薄层干燥模型的对比
dc.title.alternativeComparison between REA model and thin layer drying model based on strip drying kinetics
dc.typeArticle


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