| 压力对烟丝干燥有效扩散系数的影响 |
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| 引用本文： | 张合明,闫亚明,刘朝贤,李斌,鲁端峰.压力对烟丝干燥有效扩散系数的影响[J].烟草科技,2011(6). |
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| 作者姓名： | 张合明 闫亚明 刘朝贤 李斌 鲁端峰 |
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| 作者单位： | 郑州烟草研究院烟草行业烟草工艺重点实验室,郑州高新技术产业开发区枫杨街2号,450001 |
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| 基金项目： | 郑州烟草研究院院长基金项目“处理环境中压力对烟丝对流干燥特性的影响” |
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| 摘 要： | 选择了3种烟丝作为试验原料,利用加压对流干燥装置,考察了环境压力与温度对烟丝干燥过程的影响.试验结果表明:在加压干燥条件下,环境介质温度越高,有效扩散系数越大,水分选出越快;环境压力越高,有效扩散系数越大,水分干燥越快.同时,采用无因次分析法建立了重庆、山东和四川地区烟丝干燥过程中压力与烟丝干燥有效扩散系数的关系模型,模型计算值与试验结果的相关系数为0.95,说明所建模型能够较好地表征加压条件下烟丝干燥动力学特性.
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| 关 键 词： | 烟丝 薄层干燥 加压干燥 干燥动力学 |
Influence of Pressure on Effective Diffusion Coefficients in Cut Tobacco Drying |
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| ZHANG HE-MING,YAN YA-MING,LIU CHAO-XIAN,LI BIN,LU DUAN-FENG.Influence of Pressure on Effective Diffusion Coefficients in Cut Tobacco Drying[J].Tobacco Science & Technology,2011(6). |
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| Authors: | ZHANG HE-MING YAN YA-MING LIU CHAO-XIAN LI BIN LU DUAN-FENG |
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| Affiliation: | ZHANG HE-MING,YAN YA-MING,LIU CHAO-XIAN,LI BIN,and LU DUAN-FENG Key Laboratory of Tobacco Processing Technology of CNTC,Zhengzhou Tobacco Research Institute of CNTC,Zhengzhou 450001,Chin |
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| Abstract: | In order to investigate the effects of environmental pressure and temperature on cut tobacco drying,three kinds of cut tobacco were experimented with a pressurized convective dryer.The results showed that the effective diffusion coefficients of cut tobacco increased and the moisture emission accelerated with the rising of drying gas temperature and environmental pressure.The relationship models between the effective diffusion coefficient and environmental pressure in drying process of cut tobacco originated... |
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| Keywords: | Cut-tobacco Thin layer drying Pressurizing drying Drying kinetics |
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