Multifunctional Additives for NOX Abatement in Fluidized Bed Biomass Combustion
文献类型：期刊论文
| 作者 | Ulusoy, Burak2,3,4; Anicic, Bozidar2,3,4; Zhao, Liyan4; Lin, Weigang2,4; Lu, Bona1,2; Wang, Wei1,2; Dam-Johansen, Kim4; Wu, Hao4 |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2021-08-05 |
| 卷号 | 35期号:15页码:12367-12379 |
| ISSN号 | 0887-0624 |
| DOI | 10.1021/acs.energyfuels.1c01186 |
| 英文摘要 | Two 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. |
| WOS关键词 | THERMAL-DECOMPOSITION ; GASEOUS EMISSIONS ; WHEAT-STRAW ; AGGLOMERATION ; REDUCTION ; COCOMBUSTION ; RESIDUES ; COAL ; N2O ; MECHANISM |
| 资助项目 | Sino-Danish Centre for Education and Research and Technical University of Denmark |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000683814800056 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | Sino-Danish Centre for Education and Research and Technical University of Denmark |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/49853]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wu, Hao |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China 3.Sino Danish Ctr Educ & Res, Beijing 100093, Peoples R China 4.Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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