Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones

doi:10.1016/j.powtec.2020.06.010

	Numerical exploration of hydrodynamic features in a methanol-to-olefins fluidized bed reactor with two parallel reaction zones
	Zhang, Chunhua 1,2; Wang, Fenfen 1; Lu, Bona 2,3; Wang, Wei 2,3; Liu, Mengxi 1; Lu, Chunxi 1
刊名	POWDER TECHNOLOGY
	2020-07-15
卷号	372 页码:336-350
关键词	Multiple reaction zones Internal circulation Gas bypassing MTO CFD EMMS
ISSN号	0032-5910
DOI	10.1016/j.powtec.2020.06.010
英文摘要	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.
资助项目	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关键词	GAS-SOLID FLOWS ; CFD SIMULATION ; MIXING CHARACTERISTICS ; FILTERED MODEL ; CIRCULATION ; HYDROCARBONS ; DRAG ; CONVERSION ; MECHANISM ; BEHAVIOR
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000558906000032
资助机构	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
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/41674]
专题	中国科学院过程工程研究所
通讯作者	Lu, Bona; Liu, Mengxi
作者单位	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
推荐引用方式 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.