Dynamic analysis on thin layer drying of dyeing sludge

YIN Libao; XU Qisheng; PENG Xiaowei; YU Zhaosheng; LIAO Yanfen; MA Xiaoqian

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Dynamic analysis on thin layer drying of dyeing sludge

更新时间：2025-09-28

- Dynamic analysis on thin layer drying of dyeing sludge
- Thermal Power Generation Vol. 44, Issue 4, Pages: 62-66(2015)
- 作者机构：
  
  1. 广东电网公司电力科学研究院
  2. 华南理工大学电力学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： X791
- Published：2015
- 稿件说明：
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YIN Libao, XU Qisheng, PENG Xiaowei, et al. Dynamic analysis on thin layer drying of dyeing sludge[J]. Thermal power generation, 2015, 44(4): 62-66.
DOI：

YIN Libao, XU Qisheng, PENG Xiaowei, et al. Dynamic analysis on thin layer drying of dyeing sludge[J]. Thermal power generation, 2015, 44(4): 62-66. DOI：

摘要

通过印染污泥薄层干燥试验

研究干燥温度和污泥厚度对印染污泥干燥特性的影响

并与造纸污泥进行对比

比较不同薄层干燥数值模拟模型

最终选用Modified Page模型描述印染污泥薄层干燥过程

求出印染污泥的有效扩散系数和活化能。结果表明

干燥温度越高、污泥厚度越薄

污泥干燥速率越大;不同污泥干燥特性存在明显差异

印染污泥厚度对干燥速率的影响程度比造纸污泥大;当干燥温度为140~200℃时

印染污泥的有效扩散系数为2.966 7×10-8~8.388 8×10-8 m2/s;印染污泥水分扩散的活化能为3.88kJ/mol

比造纸污泥低5.555kJ/mol。

Abstract

A series of experiments about thin-layer drying of dyeing sludge were carried out to investigate the effects of temperature and thicknesses on drying characteristics of dyeing sludge.The results were compared with that of paper mill sludge.By adopting different thin-layer drying models

the Modified Page model was finally chosen as the drying model to simulate the sludge drying process.Moreover

the effective diffusion coefficient and activation energy of the dyeing sludge was calculated.The results show that

the higher the drying temperature and the thinner the drying layer

the higher drying rate the dyeing sludge.Obvious difference existed between drying performance of different sludges.The thickness of dyeing sludge had more dramatic influence on the drying rate than the paper mill sludge.When the drying temperature was between 140 ℃ and 200 ℃

the effective diffusion coefficient of moisture in the dyeing sludge ranged from 2.966 7×10-8 m2/s to 8.388 8×10-8 m2/s

and the activation energy was 3.88kJ/mol

which was lower than the paper mill sludge(5.555kJ/mol).

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