SO<sub>2</sub>和NO对ACF低温脱除模拟燃煤烟气中VOC的影响

刘子红; 邱建荣; 刘豪; 谭增强; 阎志强; 张曼娜; 曾汉才; 杨辉

SO₂和NO对ACF低温脱除模拟燃煤烟气中VOC的影响

1.
华中科技大学煤燃烧国家重点实验室, 武汉 430074;
2.
贵州大学资源与环境工程学院, 贵阳 550025

基金项目: 国家自然科学基金(50525619,50976041,51078163);国家高技术研究发展计划(863计划,2006AA05Z304)。

详细信息

作者简介:
刘子红, (1974- ), 男, 博士研究生, 主要从事大气污染物控制技术研究, E-mail:xgyi@qq.com。

中图分类号: X511
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出版历程
- 收稿日期: 2011-06-09
- 修回日期: 2011-09-24
- 刊出日期: 2012-01-31

Effect of SO₂ and NO on removal of VOC from simulated flue gas by activated carbon fibers at low temperature

1.
National Laboratory of Coal Combustion, Huazhong University of Science &|Technology, Wuhan 430074, China;
2.
School of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China

摘要

摘要: 采用H₂O₂浸渍的方法对活性炭纤维(ACF)进行改性,并利用氮吸附等温线和XPS(X-ray photoelectron spectroscopy)的方法对ACF样品进行表征。通过实验测定改性前后ACF脱除VOC(甲苯作为VOC的代表物)的效果,同时考察二氧化硫(SO₂)和一氧化氮(NO)对ACF脱除甲苯的影响。研究发现,双氧水浸渍改性对ACF的BET表面积和孔容没有影响,但使得ACF样品表面的含氧官能团含量大量增加。实验数据也表明,SO₂和NO对VOC在ACF上的吸附具有抑制作用,且随着两者浓度的增加,抑制作用也增强。研究还发现,SO₂和NO同时存在比单一的SO₂或NO对VOC在ACF上吸附的抑制作用更为明显。
- 活性炭纤维 /
- 改性 /
- 挥发性有机物 /
- XPS /
- 表面官能团
Abstract: Volatile organic compounds (VOC) seriously affect the environment and human health. The removal of pollutants from coal-fired power plants based on ACF adsorption is a promising method. In this paper, hydrogen peroxide (H₂O₂) was used to modify the ACF sample, and the methods of N₂ adsorption isotherm and XPS (X-ray photoelectron spectroscopy) were utilized to characterize the ACF samples. The adsorption tests of VOC (toluene as a typical representative) based on ACF were conducted and the effect of SO₂ and NO on the adsorption of toluene were investigated. It was found that H₂O₂ modification had no impact on the BET surface and pore volume of the ACF sample, but increased the oxygen groups on the ACF surface. The results also indicated that SO₂ or NO inhibited the adsorption of VOC on ACF, and this inhibition became strong with increasing concentration of SO₂ or NO. It is also found that the coexistence of SO₂ and NO deteriorated the adsorption VOC on ACF more seriously than the single existence of SO₂ or NO.
- ACF /
- modification /
- VOC /
- XPS /
- surface groups

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参考文献(18)

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