| 曾祥媛，张建，赵武奇*，卢丹，吴妮，张清安.党参根气体射流冲击干燥特性和干燥模型[J].海南师范大学学报自科版,2018,31(3):237-149 |
| 党参根气体射流冲击干燥特性和干燥模型 |
| Drying Characteristics and Model of Codonopsis pilosula Roots Dried in An Air - impingement Jet Dryer |
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| DOI：10.12051/j.issn.1674-4942.2018.03.001 |
| 中文关键词: 党参根 气体射流冲击 干燥特性 干燥动力学模型 响应面 |
| 英文关键词: Codonopsis pilosula roots air - impingement jet drying characteristics drying kinetics model RSM |
| 基金项目:西安市农业科技创新计划项目[2017050NC/NY009（3）] |
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| 中文摘要: |
| 研究了不同干燥风温（40、50、60、70、80 ℃）、喷嘴到物料托盘的间距（5、10、15 cm）和
风速（8、11、14 m/s）三个因素对党参根气体射流冲击干燥特性的影响，结果表明对党参根气体射流
冲击干燥速率（DR）和水分有效扩散系数（Deff）的影响强弱顺序依次是风温、喷嘴到物料托盘的间
距和风速；党参根气体射流冲击干燥水分有效扩散系数在1.5904×10-10～3.0684×10-10 m2·s-1之
间；干燥活化能为15.86 kJ·mol-1；Modified Page 模型能反映党参根气体射流冲击干燥动力学过程，
建立的水分比MR 与时间t 及干燥工艺参数的方程可有效预测党参根在气体射流冲击干燥过程中
水分变化。 |
| 英文摘要: |
| Drying characteristics of Codonopsis pilosula roots were investigated in an air - impingement jet dryer under dif⁃
ferent drying temperatures(40, 50, 60, 70 and 80 °C) , distance from jet nozzle to material tray(DJNMT)
(5, 10 and15
cm) , and air velocities(8, 11 and 14 m/s) . Results indicated that the drying rate(DR)and moisture effective diffusion co⁃
efficient(D eff ) were mainly influenced by the drying temperature of air, followed by DJNMT and air velocity. D eff was in the
range of 1.5904 × 10 -10 to 3.0684 × 10 -10 m 2 ·s -1 and the drying activation energy(E a )was 15.86 kJ·/mol -1 . The Modified
Page model can reflect the dynamics of Codonopsis pilosula roots air impingement drying. The equation of moisture ratio and
time and drying process parameters can effectively predict the moisture change of Codonopsis pilosula roots air impingement
drying. |
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