正交实验研究硝酸改性对活性焦表面性质及脱硫性能的影响

郭姣姣; 杨永珍; 张永奇; 房倚天; 刘旭光

正交实验研究硝酸改性对活性焦表面性质及脱硫性能的影响

1.
太原理工大学化学化工学院, 山西太原 030024;
2.
中国科学院山西煤炭化学研究所, 山西太原 030001;
3.
太原理工大学新材料工程技术研究中心, 山西太原 030024

基金项目: 长江学者与创新团队发展规划(IRT0972)。

详细信息

通讯作者:
刘旭光, 博士, 教授; Tel/Fax: 0351-6014138; E-mail: liuxuguang@tyut.edu.cn.

中图分类号: X701
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出版历程
- 收稿日期: 2011-12-03
- 修回日期: 2012-03-17
- 刊出日期: 2012-08-31

Influence of nitric acid modified activated coke on its surface properties and desulphurization performance by orthogonal test

1.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
3.
Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China

摘要

摘要: 用硝酸对活性焦进行改性,采用正交实验法,考察了硝酸浓度、活化温度、活化时间以及煅烧温度对活性焦脱硫性质的影响,并在固定床反应装置上进行了活性焦评价实验。利用酸碱滴定、碘值测定、N₂吸附法、傅里叶红外光谱分析等对改性活性焦的表面酸碱性、比表面积、孔容等进行了分析和表征。实验结果表明,硝酸改性增加了活性焦的比表面积,提高了活性焦表面碱性;煅烧有助于提高表面碱性;硝酸改性明显提高了活性焦的脱硫性能。
- 烟气脱硫 /
- 硝酸处理 /
- 活性焦 /
- 表面性质
Abstract: An activated coke was modified by HNO₃. The influences of HNO₃ concentration, activation temperature, activation time and calcination temperature on surface properties the activated coke were investigated by orthogonal experiments. The SO₂ adsorption capacities of the modified activated coke were examined in a fixed bed reactor. The surface acidity-basicity, specific surface area and pore structure coke were characterized by acid-base titration, N₂ adsorption, iodine adsorption value and Fourier transform infrared spectrometry, respectively. The results show that HNO₃ modification raises the specific surface area and surface basicity of the activated coke. Calcination improves the surface basicity. HNO₃ modification obviously enhances the desulfurization performance of the activated coke.
- flue gas desulfurization /
- HNO₃ oxidation /
- activated coke /
- surface properties

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参考文献(9)

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