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| Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones | |
| Zhang, Chunhua1,2; Wang, Fenfen1; Lu, Bona2,3; Wang, Wei2,3; Liu, Mengxi1; Lu, Chunxi1 | |
| 2020-07-15 | |
| Source Publication | POWDER TECHNOLOGY
 |
| ISSN | 0032-5910 |
| Volume | 372Pages:336-350 |
| Abstract | A novel methanol-to-olelins (MTO) reactor in which two parallel reaction zones were created by introducing a draft tube to a column bed was numerically investigated using a combination of multi-fluid model and two types of EMMS drags, in order to explore the favorable hydrodynamics. The further numerical comparison of the novel reactor and a conventional reactor found that the introduction of a draft tube helps increase the gas velocity substantially, building an approximate plug flow in the center and concurrent downward flow in the annulus. The gas-solid contact time and solids backmixing in the draft tube were thus greatly reduced, being favorable to MTO reactions, while the gas and solids backmixing in the annulus was enhanced. Besides, severe gas bypassing from the annulus to the draft tube was detected. A gas tracer method was then adopted to quantify the gas bypassing and internal gas circulation for further optimization. (C) 2020 Elsevier B.V. All rights reserved. |
| Keyword | Multiple reaction zones Internal circulation Gas bypassing MTO CFD EMMS |
| DOI | 10.1016/j.powtec.2020.06.010 |
| Language | 英语 |
| WOS Keyword | GAS-SOLID FLOWS ; CFD SIMULATION ; MIXING CHARACTERISTICS ; FILTERED MODEL ; CIRCULATION ; HYDROCARBONS ; DRAG ; CONVERSION ; MECHANISM ; BEHAVIOR |
| Funding Project | National Natural Science Foundation of China[21625605] ; National Natural Science Foundation of China[91834302] ; "Transformational Technologies for Clean Engery and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems[Y925131119] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; "Transformational Technologies for Clean Engery and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems |
| WOS ID | WOS:000558906000032 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/41675 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Lu, Bona; Liu, Mengxi |
| Affiliation | 1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Stale Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Chunhua,Wang, Fenfen,Lu, Bona,et al. Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones[J]. POWDER TECHNOLOGY,2020,372:336-350. |
| APA | Zhang, Chunhua,Wang, Fenfen,Lu, Bona,Wang, Wei,Liu, Mengxi,&Lu, Chunxi.(2020).Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones.POWDER TECHNOLOGY,372,336-350. |
| MLA | Zhang, Chunhua,et al."Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones".POWDER TECHNOLOGY 372(2020):336-350. |
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