Systematic investigation on combustion characteristics and emissionreduction mechanism of potentially toxic elements in biomass- and biocharcoal co-combustion systems
Yousaf,B(Yousaf,Balal)1,2; Liu,GJ(Liu,Guijian)1,2; Abbas,Q(Abbas,Qumber)1; Wang,RW(Wang,Ruwei)1; Ali,M U(Ali,Muhammad Ubaid)1; Ullah,H(Ullah,Habib)1; Liu,RJ(Liu,Ruijia)1; Zhou,CC(Zhou,Chuncai)1; Liu,Guijian
2017-10-15
发表期刊Applied Energy
卷号208期号:2017页码:142-157
文章类型期刊论文
摘要Thermochemically converted biochar is considered as one of the promising alternative solid-fuel due to its high carbon contents of up to 80%, and has great potential to produce environmentally-friendly green-energy by improved fuel properties and emission-reduction of potentially toxic elements (PTEs). In this study, the biochar fuels, produced from peanut shell (PS) and wheat straw (WS) at 300, 500 and 700 °C, alone and blended with coal at mass ratio of 20% and 50% were systematically investigated for combustion characteristics and their potential to reduce the emission of PTEs including As, B, Ba, Be, Bi, Cd, Co, Cr, Cu, Ga, Ni, Pb, Sb, Sn, V and Zn in relation to partitioning, retention and volatilization in the co-combustion systems, using a variety of experimental techniques. Results indicated that the biochar-coal blended fuels in equal proportion showed steady state combustion over broad temperature range resulting increased the combustion efficiency and improved the thermal characteristics in comparison to coal and/or biomass-coal fuels. In addition, soot yield, CO emission and un-burned carbon in fly ash reduced significantly in biochar-blended fuels. However, CO2 emission from biochar-coal co-combustion was comparable to coal and/or biomass-coal fuels. Moreover, the present study illustrated that the volatilization potential of PTEs during combustion of biochar and their blends with coal decreased considerably up to 21% compared to that of coal, and enrichment of these contaminants occurred in the bottom and fly ashes ranged from 15.38–65% and 24.54–74.29%, respectively. Slagging and fouling problems were still found with biochar-coal co-combustion due to the higher inorganic fraction of biochar, which were overcome with the hydrothermal washing of fuels. Thus, it can be concluded that biochar-coal co-combustion is a suitable option for its use in existing coal-fired energy generation system to achieve the sustainable clean-green energy and reduction of gaseous PTEs emission.
关键词Biochar-coal Blend Combustion Characteristics Emission-reduction Potentially Toxic Elements Co-combustion System
DOI10.1016/j.apenergy.2017.10.059
收录类别SCI
所属项目编号973 Program ; 2014CB238903 ; 41672144 ; 41402133 ; 2016YFC0201600
语种英语
项目资助者National Basic Research Programof China ; National Basic Research Programof China ; National Natural ScienceFoundation of China ; National Natural ScienceFoundation of China ; National Key R &D Program of China ; National Key R &D Program of China
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5617
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu,Guijian
作者单位1.CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,PR China
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China
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Yousaf,B,Liu,GJ,Abbas,Q,et al. Systematic investigation on combustion characteristics and emissionreduction mechanism of potentially toxic elements in biomass- and biocharcoal co-combustion systems[J]. Applied Energy,2017,208(2017):142-157.
APA Yousaf,B.,Liu,GJ.,Abbas,Q.,Wang,RW.,Ali,M U.,...&Liu,Guijian.(2017).Systematic investigation on combustion characteristics and emissionreduction mechanism of potentially toxic elements in biomass- and biocharcoal co-combustion systems.Applied Energy,208(2017),142-157.
MLA Yousaf,B,et al."Systematic investigation on combustion characteristics and emissionreduction mechanism of potentially toxic elements in biomass- and biocharcoal co-combustion systems".Applied Energy 208.2017(2017):142-157.
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