燃料化学学报2011，Vol.39Issue(2)：149-154,6.
造纸污泥薄层干燥实验及动力学模型分析
Experiment and kinetics model analysis on thin layer drying of paper mill sludge
摘要
Abstract
A series of experiments on the thin-layer drying of paper mill sludge were carried out to investigate the effects of temperature on the drying characteristics of paper mill sludge, and the thin-layer drying model was adopted to simulate the process of sludge drying.The result shows that the higher the temperature of drying and the thinner the layer of drying, the quicker the rate of drying.As the drying temperature rises from 80 ℃ to 160 ℃, the maximum drying rate increases from 0.008 g/( g· min) to O.030 g/( g· min ).Modified page is a model to best describe the drying process of the paper mill sludge in oven.In addition, moisture transfer from paper mill sludge can be described by Fick's diffusion equation.It is obtained that the effective diffusion coefficient of dried samples of paper mill sludge ranges from 2.2×10-10 m2/s to 3.96×10-10 m2/s at temperatures from 80 ℃ to 160 ℃.By using Arrhenius equation, the activation energy of 9.435 kJ/mol for the moisture diffusion is determined.关键词
造纸污泥/薄层干燥/模拟/有效扩散系数/活化能Key words
paper mill sludge/ thin-layer drying/ simulation/ effective diffusion coefficient/ activation energy分类
能源与动力引用本文复制引用
刘凯,马晓茜,肖汉敏..造纸污泥薄层干燥实验及动力学模型分析[J].燃料化学学报,2011,39(2):149-154,6.基金项目
广东省绿色能源技术重点实验室资助(2008A060301002). （2008A060301002）
