| 模拟城市生活垃圾热处理过程中Cd与Pb挥发特性研究 |
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| 引用本文： | 于洁,孙路石,向军,胡松,苏胜,邱建荣.模拟城市生活垃圾热处理过程中Cd与Pb挥发特性研究[J].燃料化学学报,2012,0(8):1019-1024. |
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| 作者姓名： | 于洁 孙路石 向军 胡松 苏胜 邱建荣 |
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| 作者单位： | State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China |
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| 基金项目： | 国家自然科学基金(50976038,51021065);湖北省自然科学基金(2009CDB409) |
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| 摘 要： | 以Cd与Pb为研究对象,在流化床反应器上对模拟城市生活垃圾Al2O3热处理过程中重金属的动力学挥发特性进行了研究。分析了氧化还原条件、H2O、HCl、SO2及基体Al2O3对重金属的挥发特性影响。研究结果表明,Cd具有较强的挥发性,尤其是在通入HCl的情况下,而Pb的挥发程度则较低,同时氧浓度的增加会降低重金属的挥发。Al2O3颗粒中重金属的物理化学吸附以及重金属的扩散效应则同样在一定程度上抵制了重金属的释放,而SO2的通入则在一定程度上促进了Cd与Pb的释放。
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| 关 键 词： | 重金属 固体废弃物 流化床 挥发特性 |
| 收稿时间： | 2011-11-04 |
Volatilization of Cd and Pb during thermal treatment of model solid waste in a fluidized bed incinerator |
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| YU Jie,SUN Lu-shi,XIANG Jun,HU Song,SU Sheng,QIU Jian-rong.Volatilization of Cd and Pb during thermal treatment of model solid waste in a fluidized bed incinerator[J].Journal of Fuel Chemistry and Technology,2012,0(8):1019-1024. |
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| Authors: | YU Jie SUN Lu-shi XIANG Jun HU Song SU Sheng QIU Jian-rong |
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| Institution: | (State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | The Cd and Pb volatilization behavior in model solid waste in a fluidized bed incinerator with Al2O3 bed material was investigated.The influence of redox conditions,H2O,HCl,SO2 and Al2O3 was examined.The results show that Cd has a great volatility,especially when HCl is added,while Pb volatilizes moderately.Increasing the oxygen concentration can lower the heavy metal volatilization.The sorption(either physical or chemical) of Al2O3 particles,coupling with the internal diffusion of gaseous metal species,may control the volatilization of heavy metals.When SO2 is added,Cd and Pb show a higher volatility. |
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| Keywords: | heavy metals solid waste fluidized bed volatilization behavior |
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