CAS OpenIR
Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification
Li, Yuran1; Lin, Yuting1; Wang, Bin1; Ding, Song1; Qi, Feng1; Zhu, Tingyu1,2
2019-08-10
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume228Pages:1391-1400
AbstractIn the process of flue gas purification with activated coke, sulfuric acid and sulfate are deposited on the activated coke surface; therefore, thermal regeneration is needed to recover the activated coke activity, which leads to carbon consumption. In this work, various regeneration parameters, including temperature, time and atmosphere, were investigated to optimize carbon consumption. The experimental results showed that the desulfurization capacity of the activated coke was clearly improved after thermal regeneration, while the denitrification capacity demonstrated no obvious or regular changes. Based on dozens of groups of regeneration experiments, it was found that the chemical carbon consumption per mol SO2 recovery ranged from 0.5 to 2.0 mol, which was higher than the theoretical value of 0.5 mol. The proportion of CO2 in chemical carbon consumption ranged from 60%-80% with an average value of 70%, and the rest was CO. According to the results from temperature-programmed desorption (TPD), CO and CO2 consumption was mainly derived from the decomposition of carboxyl and anhydride groups, with a small contribution from the reduction reaction of sulfuric acid with carbon. CO and CO2 consumption occupied only 10%-18% of the total carbon-containing functional groups, so the reaction activity was retained after thermal regeneration. The carbon consumption in an NH3/N-2 atmosphere was smaller than that in a N-2 atmosphere, which was about half of that in a H2O/N-2 atmosphere due to the inhibition of carboxyl group decomposition, based on the results from TPD and in situ diffuse reflectance infrared Fourier transform (In situ DRIFT). Analysis of the thermal regeneration process in four iron and steel factories revealed that the chemical carbon consumption of activated coke accounted for approximately 20%-40% of the total carbon consumption, which was smaller than the contribution from physical carbon abrasion. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordActivated coke Thermal regeneration Carbon consumption Desulfurization Denitrification Flue gas
DOI10.1016/j.jclepro.2019.04.225
Language英语
WOS KeywordSELECTIVE CATALYTIC-REDUCTION ; NO ; ADSORPTION ; REMOVAL ; NH3 ; PERFORMANCE ; SO2
Funding ProjectNational Key R&D Program of China[2017YFC0210203] ; National Natural Science Foundation of China[U1810209] ; Beijing Science and Technology Project[D161100004516001]
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Beijing Science and Technology Project
WOS IDWOS:000470947000115
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29866
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuran; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Li, Yuran,Lin, Yuting,Wang, Bin,et al. Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification[J]. JOURNAL OF CLEANER PRODUCTION,2019,228:1391-1400.
APA Li, Yuran,Lin, Yuting,Wang, Bin,Ding, Song,Qi, Feng,&Zhu, Tingyu.(2019).Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification.JOURNAL OF CLEANER PRODUCTION,228,1391-1400.
MLA Li, Yuran,et al."Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification".JOURNAL OF CLEANER PRODUCTION 228(2019):1391-1400.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Yuran]'s Articles
[Lin, Yuting]'s Articles
[Wang, Bin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Yuran]'s Articles
[Lin, Yuting]'s Articles
[Wang, Bin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Yuran]'s Articles
[Lin, Yuting]'s Articles
[Wang, Bin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.