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Process Simulation Development of Coal Combustion in a Circulating Fluidized Bed Combustor Based on Aspen Plus
Alternative TitleEnergy Fuels
Liu, Bing1,2; Yang, Xuemin1; Song, Wenli1; Lin, Weigang1
2011-04-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume25Issue:4Pages:1721-1730
AbstractA process simulation model has been developed to simulate and predict the condition of three kinds of coal combustion in a 30 kW circulating fluidized bed combustor based on Aspen Plus with considering gas-solid hydrodynamics via Aspen Plus in-line FORTRAN codes and combustion reaction kinetics via some external FORTRAN subroutines simultaneously. The related mathematical models in the process simulation, such as a gas-solid hydrodynamics model in the CFB riser, equivalent pyrolysis model of coal, and combustion kinetics model of coal pyrolysis products, have been presented in detail. The profiles of voidage and gas pressure along the height of riser are discussed and preliminarily predicted by the developed model in this paper. It Can be concluded from the results of the process simulation model that increasing gas superficial velocity can lead to a decrease of voidage in the dense region and lower acceleration region, and a slight increase of voidage in the upper acceleration region and completely fluidized region. Furthermore, increasing gas superficial velocity can also effectively increase the total pressure drop of the riser. Therefore, a larger inlet pressure is required when more primary air is introduced into the riser bottom.; A process simulation model has been developed to simulate and predict the condition of three kinds of coal combustion in a 30 kW circulating fluidized bed combustor based on Aspen Plus with considering gas-solid hydrodynamics via Aspen Plus in-line FORTRAN codes and combustion reaction kinetics via some external FORTRAN subroutines simultaneously. The related mathematical models in the process simulation, such as a gas-solid hydrodynamics model in the CFB riser, equivalent pyrolysis model of coal, and combustion kinetics model of coal pyrolysis products, have been presented in detail. The profiles of voidage and gas pressure along the height of riser are discussed and preliminarily predicted by the developed model in this paper. It Can be concluded from the results of the process simulation model that increasing gas superficial velocity can lead to a decrease of voidage in the dense region and lower acceleration region, and a slight increase of voidage in the upper acceleration region and completely fluidized region. Furthermore, increasing gas superficial velocity can also effectively increase the total pressure drop of the riser. Therefore, a larger inlet pressure is required when more primary air is introduced into the riser bottom.
KeywordSingle-particle Emissions Biomass Model Cfb N2o Boilers Riser Char Gas
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef101439s
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSINGLE-PARTICLE ; EMISSIONS ; BIOMASS ; MODEL ; CFB ; N2O ; BOILERS ; RISER ; CHAR ; GAS
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000289697700044
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6456
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Liu, Bing,Yang, Xuemin,Song, Wenli,et al. Process Simulation Development of Coal Combustion in a Circulating Fluidized Bed Combustor Based on Aspen Plus[J]. ENERGY & FUELS,2011,25(4):1721-1730.
APA Liu, Bing,Yang, Xuemin,Song, Wenli,&Lin, Weigang.(2011).Process Simulation Development of Coal Combustion in a Circulating Fluidized Bed Combustor Based on Aspen Plus.ENERGY & FUELS,25(4),1721-1730.
MLA Liu, Bing,et al."Process Simulation Development of Coal Combustion in a Circulating Fluidized Bed Combustor Based on Aspen Plus".ENERGY & FUELS 25.4(2011):1721-1730.
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