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| Effects of internals on phase holdup and backmixing in a slightly-expanded-bed reactor with gas-liquid concurrent upflow | |
Yu, Kang1,2; Wang, Weijie1,2; Zhang, Tao3; Yong, Yumei1 ; Yang, Chao1,2
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| 2019-10-01 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
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| ISSN | 1004-9541 |
| Volume | 27Issue:10Pages:2273-2283 |
| Abstract | 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. |
| Keyword | Internals Phase holdup Backmixing Slightly-expanded-bed reactor Multiphase flow Hydrodynamics |
| DOI | 10.1016/j.cjche.2019.05.011 |
| Language | 英语 |
| WOS Keyword | BUBBLE-COLUMN REACTOR ; COCURRENT UPFLOW ; PRESSURE-DROP ; PACKED-BEDS ; TRICKLE-BED ; FIXED-BEDS ; MODEL ; SATURATION ; DOWNFLOW ; DISTRIBUTIONS |
| Funding Project | 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 Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | 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 |
| WOS ID | WOS:000506861100005 |
| Publisher | CHEMICAL INDUSTRY PRESS CO LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/38746 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Yong, Yumei; Yang, Chao |
| Affiliation | 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 |
| Recommended Citation 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. |
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