摘要
为研究加热卷烟再造烟叶干燥过程中的水分迁移规律,考察不同工艺及甘油含量对加热卷烟再造烟叶干燥特性的影响,利用热重分析仪,在50~90℃下对不同甘油含量的辊压法、造纸法、干法和稠浆法再造烟叶进行等温干燥实验,建立了加热卷烟再造烟叶等温干燥动力学模型。结果表明:①再造烟叶干燥过程中存在升速干燥、恒速干燥、第一降速干燥与第二降速干燥4个阶段。②根据再造烟叶干燥过程的特点建立加热卷烟再造烟叶等温干燥动力学分段模型,拟合效果R2均大于0.9952,RMSE在0.0028以下,可准确描述加热卷烟再造烟叶等温干燥过程中的水分迁移规律。③甘油含量增加可提高干燥过程的平衡含水率,随着甘油含量的增加,干燥速率常数k1升高,k2、k3均降低。④相同的干燥条件下,4种工艺再造烟叶的干燥速率从大到小依次为造纸法、干法、辊压法及稠浆法。
In order to study the moisture migration kinetics during the drying process of reconstituted tobacco for heated tobacco products and to investigate the influences of different processing technologies and glycerin contents on the drying characteristics of the reconstituted tobacco materials,isothermal drying experiments on the reconstituted tobacco samples prepared by the rolling process,paper-making process,dry process and slurry process with different glycerin contents were conducted at 50-90℃.An isothermal model describing the drying kinetics for the reconstituted tobacco was established based on the data obtained by thermogravimetric analysis.The results showed that:1)There were four stages in the drying process of the reconstituted tobacco:accelerated drying,drying at a constant rate,first and second decelerated drying.2)Based on the characteristics of the drying process,a segmented isothermal drying kinetics model was established.The fitting effect R2 was greater than 0.9952 and the RMSE was less than 0.0028.The established model could describe the law of moisture migration in the isothermal drying process accurately.3)The increase of glycerin content increased the equilibrium moisture content in the reconstituted tobacco during drying.With the increase of glycerol content,the drying rate constant k1 increased,while k2 and k3 decreased.4)Under the same drying condition,the drying rate for the four processing technologies were in the order of paper-making process>drying process>rolling process>slurry process.
作者
王诗雨
张柯
王乐
刘泽
孙悦
张明建
王兵
尚善斋
付丽丽
汤建国
李斌
WANG Shiyu;ZHANG Ke;WANG Le;LIU Ze;SUN Yue;ZHANG Mingjian;WANG Bing;SHANG Shanzhai;FU Lili;TANG Jianguo;LI Bin(Zhengzhou Tobacco Research Institute of CNTC,Zhengzhou 450001,China;Technology Center,China Tobacco Yunnan Industrial Co.,Ltd.,Kunming 650231,China)
出处
《烟草科技》
CAS
CSCD
北大核心
2021年第9期80-89,共10页
Tobacco Science & Technology
基金
国家烟草专卖局新型卷烟研制重大专项项目“加热卷烟加热状态评价关键技术研究”[110202101017(XX-03)]
郑州烟草研究院院长科技发展基金项目“电加热型卷烟水分迁移行为及其传热特性变化规律的研究”(252018CA0180)。
关键词
加热卷烟
再造烟叶
等温干燥
动力学模型
Heated tobacco product
Reconstituted tobacco
Isothermal drying
Kinetics model
