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Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor
Zhang, Guangyi1; Liu, Huan1,2; Ge, Yaxin1,3; Gao, Shiqiu1
2017-08-15
Source PublicationFUEL
ISSN0016-2361
Volume202Pages:66-77
Abstract

The gas (mainly NO and SO2) emission and ash characteristics from combustion of high ash content antibiotic mycelial residue (AMR) rich in N and S were investigated using a laboratory scale fluidized bed combustor, and the effects of addition of water vapor studied at the same time. The tested combustion temperature, excess air ratio (alpha) and mass ratios of water vapor-to-fuel (WV/F) varied in 750-950 degrees C, 1.3-1.9 and 0.4-1.4, respectively. Without additional water vapor present, both the concentrations of NO and SO2 in flue gas increased with elevating combustion temperature and excess air ratio, corresponding to the increases in conversion ratio of fuel-N to NO and emission ratio of S. The addition of water vapor facilitated excavating organic matters in the ash to result in its lower C and N contents. Additional water vapor formed partial reducing atmospheres, which were characterized by high CO and H-2 concentrations in combustion atmosphere and low valence S in the ash, to thus visibly reduce NO. The SO2 concentration became slightly lower at the presence of additional water vapor and further decreased with more water vapor addition. Additional water vapor strengthened capture of SO2 by the ash. Higher WV/F ratios led to more porous structures in ash, accountable for NO reduction by catalytic effect as well as SO2 absorption. Nevertheless, it seems less possible to reduce NO and SO2 concentrations to meet their respective emission criteria, and other measures will thus have to be taken to control their emissions when directly combusting AMR for energy recovery. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordFluidized Bed Combustion Nox So2 Ash Antibiotic Mycelial Residue Water Vapor
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.fuel.2017.04.028
Indexed BySCI
Language英语
WOS KeywordSewage-sludge Combustion ; Oxy-fuel Combustion ; Hydrothermal Pretreatment ; Catalytic-reduction ; Biomass Combustion ; Carbon-monoxide ; Nox Formation ; Coal ; N2o ; Cocombustion
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationChina-Japanese Research Cooperative Program - China(2016YFE0118000) ; National Natural Science Foundation of China - China(21161140329)
WOS IDWOS:000404078500008
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22702
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Chengdu Organ Chem Co Ltd, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Guangyi,Liu, Huan,Ge, Yaxin,et al. Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor[J]. FUEL,2017,202:66-77.
APA Zhang, Guangyi,Liu, Huan,Ge, Yaxin,&Gao, Shiqiu.(2017).Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor.FUEL,202,66-77.
MLA Zhang, Guangyi,et al."Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor".FUEL 202(2017):66-77.
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