Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow

doi:10.1016/j.cjche.2019.05.011

	Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow
	Yu, Kang 1,2; Wang, Weijie 1,2; Zhang, Tao 3; Yong, Yumei 1; Yang, Chao 1,2
刊名	CHINESE JOURNAL OF CHEMICAL ENGINEERING
	2019-10-01
卷号	27 期号:10 页码:2273-2283
关键词	Internals Phase holdup Backmixing Slightly-expanded-bed reactor Multiphase flow Hydrodynamics
ISSN号	1004-9541
DOI	10.1016/j.cjche.2019.05.011
英文摘要	Five different internals were designed, and their effects on phase holdup and backmixing were investigated in a gas-liquid concurrent upflow reactor where the spherical alumina packing particles of three diameters (3.0, 4.5 and 6.0 mm) were slightly expanded under the conditions of varied superficial gas velocities (6.77 x 10(-2) - 3.61 x 10(-1) m.s(-1)) and superficial liquid velocities (9.47 x 10(-1) - 2.17 x 10(-3) m.s(-1)). The experimental results show that the gas holdup increases with the superficial gas velocity and particle size, opposite to the variational trend of liquid holdup. When an internal component is installed amid the upflow reactor, a higher gas holdup, a less liquid holdup and a larger Peclet number characterizing the weaker backmixing are obtained compared to those in the bed without internals under the same operating conditions. Additionally, the minimal backmixing is observed in the reactor equipped with the internals with a novel multi-step design. Finally, empirical correlations were proposed for estimating gas holdup, liquid holdup and Peclet number with the relative deviations within 11%, 12% and 25%, respectively. (C) 2019 The Chemical Industry and Engineering Society of China. and Chemical Industry Press Co., Ltd. All rights reserved.
资助项目	National Key Research and Development Program[2016YFB0301701] ; National Natural Science Foundation of China[21776283] ; National Natural Science Foundation of China[21427814] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-JSC030] ; Instrument Developing Project of Chinese Academy of Sciences[YZ201641] ; PetroChina
WOS关键词	BUBBLE-COLUMN REACTOR ; COCURRENT UPFLOW ; PRESSURE-DROP ; PACKED-BEDS ; TRICKLE-BED ; FIXED-BEDS ; MODEL ; SATURATION ; DOWNFLOW ; DISTRIBUTIONS
WOS研究方向	Engineering
语种	英语
出版者	CHEMICAL INDUSTRY PRESS CO LTD
WOS记录号	WOS:000506861100005
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Instrument Developing Project of Chinese Academy of Sciences ; PetroChina
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/38745]
专题	中国科学院过程工程研究所
通讯作者	Yong, Yumei; Yang, Chao
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.PetroChina Petrochem Res Inst, Beijing 102206, Peoples R China
推荐引用方式 GB/T 7714	Yu, Kang,Wang, Weijie,Zhang, Tao,et al. Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2019,27(10):2273-2283.
APA	Yu, Kang,Wang, Weijie,Zhang, Tao,Yong, Yumei,&Yang, Chao.(2019).Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow.CHINESE JOURNAL OF CHEMICAL ENGINEERING,27(10),2273-2283.
MLA	Yu, Kang,et al."Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow".CHINESE JOURNAL OF CHEMICAL ENGINEERING 27.10(2019):2273-2283.