摘要
通过在焚烧炉条件下对部分典型城市生活垃圾基元(湿办公用纸、土豆片和西瓜皮等)干燥过程的试验研究,获得了一系列干燥特性曲线,以及垃圾基元尺寸、干燥温度和基元种类等对干燥过程的影响。结果显示:增大垃圾基元的比表面积,可以有效提高垃圾的干燥速率;干燥温度由100℃提高到200℃时,所选几种垃圾基元的最大干燥速率都增加了2倍或2倍以上;湿纸板、湿纯棉布块和湿办公用纸在温度较低时,存在一定的恒速段;在实验温度范围内,西瓜皮的干燥过程中有明显的恒速段,湿木块则无明显的恒速段;土豆块、西瓜皮这类高含水率垃圾难以干燥,孔隙率较大的纸板、纯棉布块和含水率较低的树枝、木块比较容易干燥。
The drying behavior of typical municipal solid waste（MSW） matrix in a muffle incinerator was experimentally studied including the potato block,office waste paper,pure cotton cloth block and so on.The drying performance curves were obtained,with the influence of the drying temperature,dimension and species of waste matrixes on the drying process analyzed.The results show that the drying rate increases with specific surface area of the waste matrixes with drying temperature having a considerable influence on the variation of the drying rate with moisture content or the drying time.When the drying temperature increases from 100 ℃ to 200 ℃,the maximum drying rate of selected waste matrixes is enhanced by two times or above.At low drying temperatures,there is a definite constant-rate period of drying in wet paper cards and wet cotton fabric pieces.Definite constant rate period exists during drying watermelon husks at experimental drying temperatures.Initial period and falling rate period can be only observed during drying wet wood blocks and wet office paper.Potato blocks are the matrix most difficulty to dry,while branches are the matrix easiest to dry.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第11期1838-1842,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50776007)
关键词
垃圾基元
焚烧炉
高水分
干燥特性
中温
waste matrix
incinerator
high moisture
drying performance
medium temperature
