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Multifluid modeling of coal pyrolysis in a coupled downer-hopper reactor
Li, Shuyue1,3; Shu, Zhan1,2; Wang, Junwu1,2
2021-10-01
Source PublicationJOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
ISSN0165-2370
Volume159Pages:16
AbstractIn the coal pyrolysis process, the diameter of particles normally changes with the process of reaction, which not only affects the hydrodynamic behavior but also influences the heat generation and yield of the products. However, most of the previous simulation work assumes a constant diameter in the model, which may disobey the law of mass conservation at the particle scale. In this work, a multifluid framework is developed to simulate the coal pyrolysis in a coupled downer-hopper reactor. The advanced kinetic theory for particulate phase stress and particle-particle drag force, the cluster behavior modified gas-particle drag force and gas-particle heat transfer have been considered in the present study. Based on the default constant particle diameter model, the expression of coal particle size and density changing with the reaction process is derived according to the mass conservation of a single particle. Results show that the flow and reaction characteristics, including the particle density and velocity distribution, temperature behavior, pyrolysis rate and yield are significantly affected by the variable particle diameter.
KeywordCoal pyrolysis variable particle diameter Multifluid model CFD
DOI10.1016/j.jaap.2021.105335
Language英语
WOS KeywordGAS-SOLID FLOW ; BIOMASS FAST PYROLYSIS ; HEAT-TRANSFER ; PARTICLE SHRINKAGE ; EVOLUTION ; COMBUSTION ; SIMULATION
Funding ProjectNational Natural Science Foundation of China[21908223] ; National Natural Science Foundation of China[11988102] ; National Natural Science Foundation of China[21978295] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; "Transformational Technologies for Clean Energy and Demonstration," Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700]
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Analytical ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; "Transformational Technologies for Clean Energy and Demonstration," Strategic Priority Research Program of the Chinese Academy of Sciences
WOS IDWOS:000711638400002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50767
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Junwu
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia
Recommended Citation
GB/T 7714
Li, Shuyue,Shu, Zhan,Wang, Junwu. Multifluid modeling of coal pyrolysis in a coupled downer-hopper reactor[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2021,159:16.
APA Li, Shuyue,Shu, Zhan,&Wang, Junwu.(2021).Multifluid modeling of coal pyrolysis in a coupled downer-hopper reactor.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,159,16.
MLA Li, Shuyue,et al."Multifluid modeling of coal pyrolysis in a coupled downer-hopper reactor".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 159(2021):16.
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