Drying kinetics of coarse lignite particles in a fixed bed
Drying kinetics of coarse lignite particles in a fixed bed
复制标题
DOI：
10.1016/j.fuproc.2014.10.023
复制
发表时间：
2015-02
影响因子：
7.5
通讯作者：
S. Pusat;M. Akkoyunlu;H. H. Erdem-H.;Ahmet Daǧdaş
中科院分区：
文献类型：
--
作者：
S. Pusat;M. Akkoyunlu;H. H. Erdem-H.;Ahmet Daǧdaş
在本研究中，对土耳其褐煤在固定床干燥机中进行了实验工作。在70、100和130℃的干燥空气温度，0.4、1.7和1.1 m/s的干燥空气速度，80、130和150 mm的样品高度，20、35和50 mm的样品尺寸下进行干燥实验。通过统计分析，评价了12种薄层干燥模型对褐煤干燥动力学的适用性。结果表明，Wang&Singh模型是描述褐煤粗颗粒在固定床干燥机中干燥行为的最佳模型，这与文献不同。此外，通过多元回归分析，研究了干燥参数对模型系数的影响。最后给出了表观扩散系数范围。
In this study, experimental works for a Turkish lignite in a fixed bed dryer were carried out. Drying experiments were carried out at 70, 100 and 130 °C drying air temperatures, 0.4, 1.7 and 1.1 m/s drying air velocities, 80, 130 and 150 mm sample heights and 20, 35 and 50 mm sample sizes. Suitability of twelve thin-layer drying models in describing the drying kinetics of lignite was evaluated by using statistical analyses. The results show that Wang&Singh model is the best model describing the drying behavior of coarse lignite particles in a fixed bed dryer, which is different from the literature. Additionally, the effects of drying parameters on model coefficients were studied by multiple regression analysis. Finally, apparent diffusion coefficient range was presented.