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Simultaneous removal of NO(x)and SO(2)using two-stage O(3)oxidation combined with Ca(OH)(2)absorption
Zou, Yang1,3; Wang, Yan1; Liu, Xiaolong1; Zhu, Tingyu1,2; Tian, Mengkui3; Cai, Maoyu1,3
2020-10-17
Source PublicationKOREAN JOURNAL OF CHEMICAL ENGINEERING
ISSN0256-1115
Pages8
AbstractThis paper proposes two-stage O(3)oxidation combined with Ca(OH)(2)for simultaneous removal of NO(x)and SO2(NOx: Nitrogen oxides including NO, NO(2)and N2O5). In two-stage oxidation, NO was first oxidized to NO(2)in an oxidation tube, and NO(2)was further oxidized into N(2)O(5)in the spray tower. NO(x)and SO(2)were simultaneously removed in the spray tower. This method can effectively reduce the extra waste of O(3)caused by the decomposition of N2O5, especially at high temperature. Effects of various factors on denitrification efficiency were investigated. The results showed that the NO(x)removal efficiency decreased and O(3)extra consumption ratio increased with the increase of oxidation temperature or oxidation reaction time. When the O-3/NO molar ratio was 1.8, one-stage O(3)oxidation at 150(o)C extra wasted 33.3% of O-3. With the increase of O(3)concentration at site 2, the NO(x)removal efficiency first increased and then stabilized. Compared with the one-stage O(3)oxidation-absorption, the two-stage oxidation-absorption improved NO(x)removal efficiency from 62.5% to 89%. In addition, the increase of CaSO(3)slurry concentration had little effect on the denitrification efficiency.
KeywordIron Ore Sintering Flue Gas SO2 NOx Ozone Two-stage Oxidation
DOI10.1007/s11814-020-0597-z
Language英语
WOS KeywordNITRIC-OXIDE REMOVAL ; FLUE-GAS ; SIMULTANEOUS ABSORPTION ; COMBINED PERSULFATE ; OXIDATION-REMOVAL ; OZONE OXIDATION ; NO OXIDATION ; SO2 ; TEMPERATURE ; POLLUTION
Funding ProjectNational key research and development program of China[2017YFC0210600] ; National Natural Science Foundation of China[51978644]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
Funding OrganizationNational key research and development program of China ; National Natural Science Foundation of China
WOS IDWOS:000578940600001
PublisherKOREAN INSTITUTE CHEMICAL ENGINEERS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42474
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Xiaolong; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
3.Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Guizhou, Peoples R China
Recommended Citation
GB/T 7714
Zou, Yang,Wang, Yan,Liu, Xiaolong,et al. Simultaneous removal of NO(x)and SO(2)using two-stage O(3)oxidation combined with Ca(OH)(2)absorption[J]. KOREAN JOURNAL OF CHEMICAL ENGINEERING,2020:8.
APA Zou, Yang,Wang, Yan,Liu, Xiaolong,Zhu, Tingyu,Tian, Mengkui,&Cai, Maoyu.(2020).Simultaneous removal of NO(x)and SO(2)using two-stage O(3)oxidation combined with Ca(OH)(2)absorption.KOREAN JOURNAL OF CHEMICAL ENGINEERING,8.
MLA Zou, Yang,et al."Simultaneous removal of NO(x)and SO(2)using two-stage O(3)oxidation combined with Ca(OH)(2)absorption".KOREAN JOURNAL OF CHEMICAL ENGINEERING (2020):8.
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