污泥低温干化机网带对除湿效能影响的实验测试与分析  

Experimental Test and Analysis of the Influence of Sludge Low-temperature Dryer Mesh Belt on Dehumidification Efficiency

作　　者：刘道广 LIU Daoguang(Shanghai Tongchen Environmental Protection Co.Ltd.,Shanghai 200092)

机构地区：[1]上海同臣环保有限公司,上海200092

出　　处：《环境卫生工程》2024年第2期69-74,共6页Environmental Sanitation Engineering

基　　金：上海市科技创新行动计划项目(21DZ1210005)。

摘　　要：研究了污泥低温干化机的网带层数与网带铺泥厚度对回风温度、湿度、出水产能及压降的影响,并以此评估出适用于污泥低温干化机网带干化污泥颗粒的最佳工况。结果表明,在4层网带中(4层a工况),污泥颗粒在0.60 m/s的网带送风速度下干燥后的出水产能最小为20.7 kg/h,相比于2层网带中污泥颗粒在0.90 m/s下干燥后最大的出水产能(19.7 kg/h)仍高5.1%,可知4层网带污泥颗粒干燥后的出水产能更多,干燥效果更好。在网带层数的影响下,4层网带中的出水产能相较于2层网带最大可提升60.1%。在网带铺泥厚度的影响下,4层网带中的出水产能最大可提升11.3%,2层网带中最大出水产能相较于最小出水产能提升了44.0%。网带送风速度为0.90 m/s时的出水产能相较于网带送风速度为0.60 m/s时的出水产能最大可提升36.0%。研究发现网带层数对污泥低温干化机的除湿效能影响最为重要。The effects of the number of mesh belt layers and the thickness of the mesh belt sludge spreading on the return air temperature,humidity,aqueous output capacity,and pressure drop were investigated.The optimum working conditions applicable to the mesh belt of a sludge low-temperature dryer for sludge particles were evaluated.The result indicated that in four-layer mesh(a condition of four-layer a),the sludge particles in the 0.60 m/s mesh belt air velocity had the lowest water yield of 20.7 kg/h after drying.Compared with the maximum water yield(19.7 kg/h)of the sludge particles in the two-layer mesh belt after drying,it was still 5.1%higher.It could be shown that the water yield after drying of the four-layer mesh belt sludge particles was more,and the drying effect was superior.Under the influence of the number of layers of mesh belt,the water yield of the four-layer mesh belt could be improved by 60.1%when compared to the two layer mesh belt.Under the impact of the thickness of the mesh belt sludge spreading,the maximum output capacity of the four-layer mesh belt could be increased by 11.3%.And the maximum output capacity of the two-layer mesh belt could be increased by 44.0%when compared to the minimum output capacity.The maximum increase of the water yield under 0.90 m/s mesh belt air velocity could be raised by 36.0%when compared to 0.60 m/s.The study founded that the number of mesh belt layers had the greatest influence on the dehumidification efficiency of sludge low-temperature dryer.

关 键 词：污泥干化 除湿效能 网带层数 网带厚度 网带送风速度 

分 类 号：X703[环境科学与工程—环境工程]