CAS OpenIR
Multifunctional Additives for NOX Abatement in Fluidized Bed Biomass Combustion
Ulusoy, Burak1,2,3; Anicic, Bozidar1,2,3; Zhao, Liyan1; Lin, Weigang1,3; Lu, Bona3,4; Wang, Wei3,4; Dam-Johansen, Kim1; Wu, Hao1
2021-08-05
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume35Issue:15Pages:12367-12379
AbstractTwo major challenges in fluid bed combustion of biomass are increased NOX emissions and bed agglomeration. Different additives were employed to simultaneously reduce NOX emissions and bed agglomeration from the fluidized bed combustion of biomass. The base fuel was straw, and the additives included CaO, kaolin, MgCO3, coal fly ash, clay, (NH4)(2)Fe(SO4)(2), NH4Fe(SO4)(2), (NH4)(2)SO4, NH4MgPO4, AlNH4(SO4)(2), (NH4)(2)HPO4, (NH4)(3)[Fe(C2O4)(3)], and urea. The influence of (NH4)(2)SO4 particle size (<35 and <106 mu m) and introduction method (batch addition or premixing with fuel) was additionally investigated. The most effective additives against NOX emissions and bed agglomeration were further studied in air staged straw combustion and unstaged sunflower husk combustion. During sunflower husk combustion, the influence of ash accumulation and incipient defluidization on NOX emissions were examined. The results show that kaolin, CaO, MgCO3, (NH4)(2)Fe(SO4)(2), NH4Fe(SO4)(2), AlNH4(SO4)(2), and NH4MgPO4 prevented defluidization during straw combustion under the investigated conditions. Of these, AlNH4(SO4)(2) and NH4MgPO4 reduced the fuel-N to NO conversion by 40%. The mechanism of reduction was related to the facilitation of thermal DeNO(X) reactions by the introduction of NH3-releasing additives. However, the NH-based additives resulted in higher emissions of N2O. The size of (NH4)(2)SO4 particles had a slight influence on the defluidization tendency and nitrogen chemistry, while no significant difference was observed between the two additive introduction methods. Air staging reduced the fuel-N to NO conversion by 40% during straw combustion. The use of NH4MgPO4 and AlNH4(SO4)(2) under air staged conditions increased the NO emission slightly. This was predominantly caused by the combustion of NH3 in the secondary air jet. In the case of unstaged sunflower husk combustion, NH4MgPO4 and AlNH4(SO4)(2) prevented defluidization while reducing the conversion of fuel-N to NO by 30%. During sunflower husk combustion, the accumulation of ash increased NO and decreased NH3 concentrations above the bed. This was related to the poor mixing as the bed approached defluidization and to the catalytic effect of ash forming elements on the oxidation of NH3 to NO.
DOI10.1021/acs.energyfuels.1c01186
Language英语
WOS KeywordTHERMAL-DECOMPOSITION ; GASEOUS EMISSIONS ; WHEAT-STRAW ; AGGLOMERATION ; REDUCTION ; COCOMBUSTION ; RESIDUES ; COAL ; N2O ; MECHANISM
Funding ProjectSino-Danish Centre for Education and Research and Technical University of Denmark
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationSino-Danish Centre for Education and Research and Technical University of Denmark
WOS IDWOS:000683814800056
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49854
Collection中国科学院过程工程研究所
Corresponding AuthorWu, Hao
Affiliation1.Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark
2.Sino Danish Ctr Educ & Res, Beijing 100093, Peoples R China
3.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
4.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ulusoy, Burak,Anicic, Bozidar,Zhao, Liyan,et al. Multifunctional Additives for NOX Abatement in Fluidized Bed Biomass Combustion[J]. ENERGY & FUELS,2021,35(15):12367-12379.
APA Ulusoy, Burak.,Anicic, Bozidar.,Zhao, Liyan.,Lin, Weigang.,Lu, Bona.,...&Wu, Hao.(2021).Multifunctional Additives for NOX Abatement in Fluidized Bed Biomass Combustion.ENERGY & FUELS,35(15),12367-12379.
MLA Ulusoy, Burak,et al."Multifunctional Additives for NOX Abatement in Fluidized Bed Biomass Combustion".ENERGY & FUELS 35.15(2021):12367-12379.
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
[Ulusoy, Burak]'s Articles
[Anicic, Bozidar]'s Articles
[Zhao, Liyan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ulusoy, Burak]'s Articles
[Anicic, Bozidar]'s Articles
[Zhao, Liyan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ulusoy, Burak]'s Articles
[Anicic, Bozidar]'s Articles
[Zhao, Liyan]'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.