| O_2/CO_2气氛下煤焦燃烧过程中碳官能团演化行为研究 |
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| 引用本文： | 张永春,张军,盛昌栋,刘杨先,赵亮,丁启忠,王坤.O_2/CO_2气氛下煤焦燃烧过程中碳官能团演化行为研究[J].中国电机工程学报,2011(2). |
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| 作者姓名： | 张永春 张军 盛昌栋 刘杨先 赵亮 丁启忠 王坤 |
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| 作者单位： | 东南大学能源与环境学院; |
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| 基金项目： | 国家自然科学基金国际合作交流项目(507211460649)~~ |
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| 摘 要： | 利用X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)研究大同烟煤及其煤焦中碳的赋存形态;同时对大同煤焦在O2/CO2和O2/Ar气氛下燃烧过程中含碳官能团的演化规律进行研究,揭示燃烧气氛中CO2对碳转化过程的影响。结果表明,大同煤中的碳主要以芳香碳和脂肪碳的形式存在,在热解过程中,其含量降低,而酚碳、羰基和羧基含量增加。O2/CO2煤焦燃烧过程中,芳香碳和脂肪碳含量不断减少,酚碳、羰基和羧基含量则逐渐增加,其中酚碳含量增加最为显著。燃烧气氛中CO2的存在,加快了芳香碳和脂肪碳的减少,促进了酚碳、羰基和羧基的形成。
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| 关 键 词： | 煤焦 燃烧 O2/CO2气氛 碳官能团 X射线光电子能谱 |
Evolution of Carbon Functionality During Coal Char Combustion in O_2/CO_2 Atmosphere |
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| ZHANG Yongchun,ZHANG Jun,SHENG Changdong,LIU Yangxian,ZHAO Liang,DING Qizhong,WANG Kun.Evolution of Carbon Functionality During Coal Char Combustion in O_2/CO_2 Atmosphere[J].Proceedings of the CSEE,2011(2). |
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| Authors: | ZHANG Yongchun ZHANG Jun SHENG Changdong LIU Yangxian ZHAO Liang DING Qizhong WANG Kun |
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| Affiliation: | ZHANG Yongchun,ZHANG Jun,SHENG Changdong,LIU Yangxian,ZHAO Liang,DING Qizhong,WANG Kun(School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu Province,China) |
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| Abstract: | X-ray photoelectron spectroscopy(XPS) was used to investigate the carbon functional forms present in Datong bituminous coal and its chars.The evolution of carbon functionalities during char combustion in O2/CO2 and O2/Ar atmospheres were also studied.Results indicate that aromatic and aliphatic carbon was the dominant carbon functionalities in coal.Coal pyrolysis resulted in decreases in the levels of aromatic and aliphatic species but increases in the levels of phenolic,carbonyl and carboxyl species.During... |
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| Keywords: | coal char combustion O2/CO2 atmosphere carbon functionalities X-ray photoelectron spectroscopy(XPS) |
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