| 污泥改性制备烟气脱硫吸附剂的研究 |
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| 引用本文： | 余兰兰,余宏伟.污泥改性制备烟气脱硫吸附剂的研究[J].现代化工,2010,30(1). |
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| 作者姓名： | 余兰兰 余宏伟 |
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| 作者单位： | 1. 大庆石油学院化学化工学院,黑龙江,大庆163318
2. 大庆油田有限责任公司第二采油厂,黑龙江,大庆163414 |
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| 基金项目： | 黑龙江省科技攻关项目 |
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| 摘 要： | 以城市污水厂剩余污泥为原料,采用负载金属氧化物的方法进行改性制备烟气脱硫吸附剂,探讨了污泥吸附剂在SO2-O2-H2O(g)-N2体系的吸附机理。负载质量分数为5%MnO2的吸附剂性能较好,在SO2入口质量浓度为2 021.38 mg/m3、O2质量分数为12%、H2O(g)质量分数为12%、气体流速为2.13 m/min和温度60℃的条件下,污泥吸附剂的脱硫效率为93.6%,吸附容量为66.8 mg/g。水蒸气存在时,过渡金属氧化物MnO2较强的氧化性促进了对SO2的化学吸附,等温吸附过程可用Fre-undlich模型描述。
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| 关 键 词： | 污泥 吸附剂 脱硫 机理 |
Preparation of adsorbent for flue gas desulfurization by modification of sewage sludge |
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| YU Lan-lan,YU Hong-wei.Preparation of adsorbent for flue gas desulfurization by modification of sewage sludge[J].Modern Chemical Industry,2010,30(1). |
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| Authors: | YU Lan-lan YU Hong-wei |
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| Affiliation: | YU Lan-lan1,YU Hong-wei2(1.School of Chemistry , Chemical Engineering,Daqing Petroleum Institute,Daqing 163318,China,2.No.2 Production Plant,Daqing Oil Field Co.,Ltd.,Daqing 163414,China) |
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| Abstract: | Adsorbent for flue gas desulfurization is prepared from surplus sludge of sewage by the modification method of loading metal oxide,and its adsorption mechanism in SO_2-O_2-H_2O(g)-N2 system is studied.The performance of adsorbent made by loading 5% (mass fraction) of MnO_2 is better.Under the adsorption conditions of 2 021.38 mg/m~3 of inlet concentration of SO_2,12% of O_2 mass fraction and 12% of H_2O(g),2.13 m/min of flue gas velocity,60℃ of temperature,the desulfurization efficiency and adsorption capacity of sludge-derived adsorbent can be 93.6% and 66.8 mg/g,respectively.In presence of water vapor,the oxidization of the transition metal oxide,MnO_2, accelerates the chemical adsorption for SO_2.The isothermal adsorption process can be described by Freundlich model. |
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| Keywords: | sludge adsorbent desulfurization mechanism |
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