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IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)  > 期刊论文
题名: Retention mechanisms of ash compositions on toxic elements (Sb, Se and Pb) during fluidized bed combustion
作者: Zhou, Chuncai1, 2;  Liu, Guijian1, 2;  Xu, Zhongyu1;  Sun, Hao1;  Lam, Paul Kwan Sing3, 4
通讯作者: Liu,Guijian
关键词: Toxic element ;  Ash composition ;  Redistribution ;  Retention mechanism ;  Coal combustion
刊名: FUEL
发表日期: 2018-02-01
DOI: 10.1016/j.fuel.2017.10.111
卷: 213, 期:2018, 页:98-105
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Energy & Fuels ;  Engineering
英文摘要: Both laboratory simulation experiments and thermodynamic equilibrium calculations were conducted to illustrate the retention mechanisms of ash components on three toxic elements (Sb, Se and Pb). The experiment was carried out in a fluidized bed reactor with the combustion temperature in the range of 500-1000 degrees C. The results shown that the redistribution behavior of these toxic elements was greatly proportional to the combustion temperature, ash components and amounts. The adding of Fe, Ca, Mg, Na and K favour the retention of Sb and Se, while the presence of Si was represented against Sb and Se capture. Si, Al, Fe, Na and K have an appreciable effect on the retention of Pb, while the Pb capture by Ca and Mg was limited. The partial retention of these elements in ashes may be attributed to both physisorption and chemisorption. Among them, the formation of non- volatilized compounds may be the primary contribution for the retention of Sb, Se and Pb (except for Al). The negative Sb and Se captured by Si may be ascribed to the interactions between Si and other components which promote the retention of Sb and Se. The highly Pb retention by Si and Al in ashes may be explained by the formation of PbO center dot SiO2, PbO center dot Al2O3 and PbO center dot Al2O3 center dot 2SiO(2). Fe- and Al-based materials may be supposed to the appreciate additives for the capture potential of all the selected elements.
关键词[WOS]: PULVERIZED COAL COMBUSTION ;  SELENIUM-COMPOUNDS PRESENT ;  MUNICIPAL SOLID-WASTE ;  FIRED POWER-PLANTS ;  TRACE-ELEMENTS ;  HEAVY-METALS ;  CHINESE COALS ;  FLY-ASH ;  ATMOSPHERIC EMISSION ;  THERMAL-TREATMENT
语种: 英语
所属项目编号: 973 Program ;  2014CB238903 ;  2016YFC0201600 ;  41702166 ;  41672144 ;  1708085QE110 ;  BX201700222 ;  WK2080000085 ;  2015-K-13
项目资助者: National Basic Research Program ofChina ;  National Natural Science Foundation of China ;  Anhui Provincial Natural Science Foundation ;  National Postdoctoral Program for InnovativeTalents ;  Fundamental Research Funds for theCentral Universities ;  ScienceProgram of Department of Land and Resources of Anhui Province
WOS记录号: WOS:000414924700009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.ieecas.cn/handle/361006/5355
Appears in Collections:黄土与第四纪地质国家重点实验室(2010~)_期刊论文

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作者单位: 1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
3.City Univ Hong Kong, State Key Lab Marine Pollut, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China
4.City Univ Hong Kong, Dept Biol & Chem, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China

Recommended Citation:
Zhou, Chuncai,Liu, Guijian,Xu, Zhongyu,et al. Retention mechanisms of ash compositions on toxic elements (Sb, Se and Pb) during fluidized bed combustion[J]. FUEL,2018,213(2018):98-105.
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