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Multifluid Modeling of Coal Pyrolysis in a Downer Reactor | |
Shu, Zhan1,2; Fan, Chuigang1; Li, Songgeng1; Wane, Junwu1 | |
2016-03-09 | |
Source Publication | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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ISSN | 0888-5885 |
Volume | 55Issue:9Pages:2634-2645 |
Abstract | Downer is a promising reactor for coal pyrolysis, where the energy used for coal pyrolysis comes from the heat carrier particles. However, fundamental studies are limited regardless of its practical importance. To this end, a multifluid model is established to study the hydrodynamics, heat, mass transfer, and chemical reaction in a downer reactor: The conservation equations of mass, momentum, and energy are closed with proper models for interphase mass, momentum, and heat transfer, including the particle radiation mechanism and with advanced kinetic theory for particulate phase stresses and particle-particle drag coefficients. Species transport equations, the reaction kinetic model, and the water evaporation model are also coupled. Computational fluid dynamics simulations highlight the importance of feeding temperature in coal pyrolysis and indicate that the gas-solid heat transfer and particle radiation are the major heat transfer mechanisms, whereas the direct particle-particle heat transfer is negligible. The simulations prove qualitatively the rationality of the model for coal pyrolysis. |
Keyword | Gas-solid Flow Fluidized-bed Reactors Biomass Fast Pyrolysis Chemical Looping Combustion Heat-transfer Countercurrent Downer Cfd-model Devolatilization Simulation Particles |
Subtype | Article |
Subject Area | Engineering, Chemical ; Engineering |
WOS Headings | Science & Technology ; Technology |
DOI | 10.1021/acs.iecr.5b04150 |
URL | 查看原文 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | Gas-solid Flow ; Fluidized-bed Reactors ; Biomass Fast Pyrolysis ; Chemical Looping Combustion ; Heat-transfer ; Countercurrent Downer ; Cfd-model ; Devolatilization ; Simulation ; Particles |
WOS Research Area | Engineering |
WOS Subject | Engineering, Chemical |
Funding Organization | National Natural Science Foundation of China(91334106 ; Ministry of Science and Technology of the People's Republic of China(2014CB744304 |
WOS ID | WOS:000371945300013 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/20687 |
Collection | 研究所(批量导入) |
Corresponding Author | Wane, Junwu |
Affiliation | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Shu, Zhan,Fan, Chuigang,Li, Songgeng,et al. Multifluid Modeling of Coal Pyrolysis in a Downer Reactor[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2016,55(9):2634-2645. |
APA | Shu, Zhan,Fan, Chuigang,Li, Songgeng,&Wane, Junwu.(2016).Multifluid Modeling of Coal Pyrolysis in a Downer Reactor.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,55(9),2634-2645. |
MLA | Shu, Zhan,et al."Multifluid Modeling of Coal Pyrolysis in a Downer Reactor".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 55.9(2016):2634-2645. |
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File Name/Size | DocType | Version | Access | License | ||
Multifluid Modeling (3717KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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