| TiO2-硅酸铝纤维纳米复合材料光催化脱硫脱硝脱汞的实验研究 |
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| 引用本文： | 袁媛,赵永椿,张军营,王宇翔,陈玉民,郑楚光.TiO2-硅酸铝纤维纳米复合材料光催化脱硫脱硝脱汞的实验研究[J].中国电机工程学报,2011,31(11). |
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| 作者姓名： | 袁媛 赵永椿 张军营 王宇翔 陈玉民 郑楚光 |
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| 作者单位： | 煤燃烧国家重点实验室(华中科技大学),湖北省,武汉市,430074 |
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| 基金项目： | 国家自然科学基金项目(40972102,50936001); 国家重点基础研究发展计划项目(973项目)(2010CB227003)~~ |
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| 摘 要： | 使用溶胶凝胶法以硅酸铝纤维为载体制备纳米TiO2复合材料,利用X射线衍射仪及场发射扫描电镜对其进行表征.在波长为253.7nm的紫外光照射下使用复合材料脱除模拟燃煤烟气中的SO2,NO和元素Hg,考察了此复合材料的脱硫、脱硝和脱汞效率,以及试验工况对脱除效率的影响.研究结果表明硅酸铝纤维上负载的纳米TiO2主要为锐钛矿相,粒径在20nm左右.光催化脱硫、脱硝和脱汞效率达到37%、40%和84%.SO2和NO的浓度增加,其光催化脱除效率降低,烟气中低浓度的SO2对NO的脱除起促进作用,而在较高的浓度范围内会抑制光催化脱硝效率;同样随着烟气中NO浓度的逐渐增加,对光催化脱硫也表现出先促进后抑制的作用.温度对光催化氧化有抑制作用,纳米复合材料的脱硫脱硝脱汞效率均随着反应温度的升高而降低.
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| 关 键 词： | 纳米TiO2复合材料 光催化 脱硫脱硝 脱汞 |
Study on Photocatalytic Experiments of Desulfurization,Denitrification and Mercury Removal Using a TiO_2-aluminum Silicate Fiber Nanocomposite |
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| YUAN Yuan
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ZHAO Yongchun
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ZHANG Junying
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WANG Yuxiang
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CHEN Yumin
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ZHENG Chuguang.Study on Photocatalytic Experiments of Desulfurization,Denitrification and Mercury Removal Using a TiO_2-aluminum Silicate Fiber Nanocomposite[J].Proceedings of the CSEE,2011,31(11). |
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| Authors: | YUAN Yuan ZHAO Yongchun ZHANG Junying WANG Yuxiang CHEN Yumin ZHENG Chuguang |
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| Affiliation: | YUAN Yuan,ZHAO Yongchun,ZHANG Junying,WANG Yuxiang,CHEN Yumin,ZHENG Chuguang(State Key Lab of Coal Combustion(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China) |
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| Abstract: | A novel TiO2-aluminum silicate fiber nanocomposite was prepared by sol-gel method.The nanocomposite was characterized by X-ray diffraction and field scanning electron microscopy.Nano TiO2 particles supported on aluminum silicate fiber existed as anatase with a diameter about 20nm.This nanocomposite was used to remove SO2,NO and Hg0 from simulated flue gas under UV irradiation at a wavelength of 253.7 nm.The desulfurization,denitrification and mercury removal efficiencies and effects of experimental conditio... |
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| Keywords: | TiO2 nanocomposite photocatalysis desulfurization and denitrification mercury removal |
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