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湿污泥在流化床中干燥特性

Keywords: 污泥,流化床,干燥,床温,含水率

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Abstract:

在鼓泡流化床干燥器内,床料采用0~1mm的石英砂,以热空气作为干燥介质,对城市污水污泥的流态化干燥特性进行实验研究。通过控制送风温度、流化风量、加料量、污泥粒径等参数,研究在不同工况条件下床温以及干污泥含水率的变化情况。结果表明,随着送风温度的升高,床温升高,干污泥含水率下降,最终趋向于一个稳定值8%。床温随流化风量的增加先是减小而后升高,干污泥的含水率随流化风量的增加先是降低而后增大。当加料量从11kg/h增加到13kg/h时,干污泥的含水率基本没有变化,当加料量超过13kg/h时,干污泥的含水率从8.1%开始呈递增趋势。随污泥粒径的增大,床温升高,干污泥含水率也随之升高。

References

[1]  Philippek C., Werther J. Co-combustion of wet sewage sludge in coal-fired circulating fluidized-bed combustor. J. Inst. Energy, 1997,70(12):141-150
[2]  吕清刚,李志伟,那永洁,等.CFBC混烧城市污泥与煤N2O和NO的排放.工程热物理学报, 2004,25(1):163-166 Lü Qinggang,Li Zhiwei,Na Yongjie,et al. Emissions of N2O and NO in co-firing experiment of municipal sewage sludge and coal in CFBC.Journal of Engineering Thermophysics,2004,25(1):163-166(in Chinese)
[3]  吕清刚,范晓旭,那永洁,等.城市下水污泥和煤/LPG 在循环流化床上的混烧实验研究.工程热物理学报,2006,27(2):339-342 Lü Qinggang,Fan Xiaoxu,Na Yongjie,et al.Co-combustion of urban sewage sludge and coal/LPG in the circulating fluidized bed. Journal of Engineering Thermophysics, 2006,27(2):339-342(in Chinese)
[4]  Werther J., Ogada T. Sewage sludge combustion. Progressin Energy and Combustion Science, 1999,25(1):55-56
[5]  Shin Y. S.,Kim H. C., Chun H. S. Drying of water treatment process sludge in a fluidized bed dryer. Korean Journal of Chemical Engineering,2000,17(1):22-26
[6]  Vaxelaire J.,Bongiovanni J. M.,Mousques P.,et al. Thermal drying of residual sludge. Mater Research, 2000,34(17):4318-4323
[7]  余杰,田宁宁,王凯军.我国污泥处理、处置技术政策探讨.中国给水排水,2005,21(8):84-87 Yu Jie,Tian Ningning,Wang Kaijun.Discussion on the treatment and disposal technology policy of sludge in China.China Water and Wastewater,2005,21(8):84-87(in Chinese)
[8]  Brenton,Mike. Process control advances safe sludge drying.Water and Wastewater International,2003,18(5):36-42
[9]  张辰.城市污泥集约化处理.中国给水排水,2002,28(4):21-22 Zhang Chen.Municipal intensive treatment of sludge. China Water and Wastewater,2002,28(4):21-22(in Chinese)
[10]  张宁生,周强泰,芮新红.污泥的焚烧处理技术.能源研究与利用,2003,(1):35-37 Zhang Ninsheng, Zhou Qiangtai, Rui Xinhong. Processing technology of incineration of sludge. Research and Utilization of Energy,2003,(1):35-37(in Chinese)
[11]  普大华,吴学伟.城市综合污水处理厂污泥处理技术及应用.广州环境科学,2006,21(4):14-16 Pu Dahua,Wu Xuewei. Sludge treatment technologies and applications of municipal sewage treatment plant. Environmental Science of Guangzhou,2006,21(4):14-16(in Chinese)
[12]  安丽,陈祖奇,潘智生,等.污泥处置方法的研究.环境工程,2000,18(1):40-43 An Li,Chen Zuqi,Pan Zhisheng,et al.Method of sludge disposal.Environmental Engineering,2000,18(1):40-43(in Chinese)
[13]  Helena L. M.,Abelha P., Lapa N.,et al.The behaviour of ashes and heavy metals during the co-combustion of sewage sludge in a fluidized bed. Waste Manage.,2003,23(9):859-870
[14]  Lars A., Leckner B. Metal emission from co-combustion of sewage sludge and coal/wood in fluidized bed.Fuel, 2004,83(13):1803-1821
[15]  侯凤云,吕清刚,那永洁,等.湿污泥颗粒的流化床干燥实验及模型.过程工程学报,2007,7(4):646-652 Hou Fengyun,Lu Qinggang,Na Yongjie,etal.The drying experiments and model of Wet sludge particles in the fluidized bed.Chinese Journal of Process Engineering,2007,7(4):646-652(in Chinese)

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