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Coupling mechanism of activated carbon mixed with dust for flue gas desulfurization and denitrification
Guo, Junxiang1; Li, Yuran1; Xiong, Jin1; Zhu, Tingyu1,2
2020-12-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume98Pages:205-214
AbstractTo clarify the effect of coking dust, sintering dust and fly ash on the activity of activated carbon for various industrial flue gas desulfurization and denitrification, the coupling mechanism of the mixed activated carbon and dust was investigated to provide theoretical reference for the stable operation. The results show that coking dust had 34% desulfurization efficiency and 10% denitrification efficiency; correspondingly, sintering dust and fly ash had no obvious desulfurization and denitrification activities. For the mixture of activated carbon and dust, the coking dust reduced the desulfurization and denitrification efficiencies by blocking the pores of activated carbon, and its inhibiting effect on activated carbon was larger than its own desulfurization and denitrification activity. The sintering dust also reduced the desulfurization efficiency on the activated carbon while enhancing the denitrification efficiency. Fly ash blocked the pores of activated carbon and reduced its reaction activity. The reaction activity of coking dust mainly came from the surface functional groups, similar to that of activated carbon. The reaction activity of sintering dust mainly came from the oxidative property of Fe2O3, which oxidized NO to NO2 and promoted the fast selectively catalytic reduction (SCR) of NO to form N-2. Sintering dust was activated by the joint action of activated carbon, and both had a coupling function. Sintering dust enhanced the adsorption and oxidation of NO, and activated carbon further promoted the reduction of NOx by NH3; thus, the denitrification efficiency increased by 5%-7% on the activated carbon. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordActivated carbon Coking dust Sintering dust Fly ash Coupling effect
DOI10.1016/j.jes.2020.06.002
Language英语
WOS KeywordCOKE DUST ; REMOVAL ; SO2 ; NH3 ; NOX ; ADSORPTION ; REDUCTION ; SPECTRA ; WATER ; XPS
Funding ProjectNational Key R&D Program of China[2017YFC0210203] ; National Natural Science Foundation of China[U1810209]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000582127500025
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42471
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuran; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Guo, Junxiang,Li, Yuran,Xiong, Jin,et al. Coupling mechanism of activated carbon mixed with dust for flue gas desulfurization and denitrification[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2020,98:205-214.
APA Guo, Junxiang,Li, Yuran,Xiong, Jin,&Zhu, Tingyu.(2020).Coupling mechanism of activated carbon mixed with dust for flue gas desulfurization and denitrification.JOURNAL OF ENVIRONMENTAL SCIENCES,98,205-214.
MLA Guo, Junxiang,et al."Coupling mechanism of activated carbon mixed with dust for flue gas desulfurization and denitrification".JOURNAL OF ENVIRONMENTAL SCIENCES 98(2020):205-214.
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