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题名: Numerical simulation of scale-up effects of methanol-to-olefins fluidized bed reactors
作者: Lu, Bona1, 2;  Zhang, Jingyuan1, 2;  Luo, Hao2, 3;  Wang, Wei1, 2;  Li, Hua4;  Ye, Mao4;  Liu, Zhongmin4;  Li, Jinghai1
关键词: EMMS ;  Scale-up ;  Fluidized bed ;  Simulation ;  MTO ;  Meso-scale
刊名: CHEMICAL ENGINEERING SCIENCE
发表日期: 2017-11-02
DOI: 10.1016/j.ces.2017.05.007
卷: 171, 页:244-255
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Scale-up of fluidized bed reactors has long been regarded as a big challenge in chemical reaction engineering. While traditional scaling theories are mostly based on hydrodynamics similarity, computational fluid dynamics (CFD) aided approach allows direct coupling between hydrodynamics and reaction factors and is expected to speed up the experiment-based scale-up process with lower cost. In this study, we aim to investigate the scale-up effects through simulations of a series of methanol-to-olefins (MTO) reactors of different sizes. The two-fluid model and energy-minimization multi-scale (EMMS)-based drag models, are combined in simulations. The fluidization characteristics in terms of flow structures, velocity distribution, mass fractions of gaseous product and coke distribution are presented against available experimental data for different-sized reactors. It is found that typical hydrodynamic features can be reasonably predicted, while the prediction of reaction behavior shows growing discrepancy with increasing reactor size. Possible reasons are discussed in the last section along with future work presented for scale-up studies. (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: SOLID RISER FLOWS ;  CFD SIMULATION ;  MULTISCALE CFD ;  EMMS MODEL ;  MTO
语种: 英语
WOS记录号: WOS:000409285000019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149900
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sinodanish Coll, Beijing 100049, Peoples R China
3.Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark
4.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab MTO, Dalian 116023, Peoples R China

Recommended Citation:
Lu, Bona,Zhang, Jingyuan,Luo, Hao,et al. Numerical simulation of scale-up effects of methanol-to-olefins fluidized bed reactors[J]. CHEMICAL ENGINEERING SCIENCE,2017,171:244-255.
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