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Gu D, Li X, Wang Y, Xu H, Ye M, Wen L. Floating particles mixing characteristics in an eccentric stirred tank coupled with dislocated fractal impellers. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2022. [DOI: 10.1515/ijcre-2021-0303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The mixing characteristics of floating particle dispersion process in an eccentric stirred tank with dislocated fractal impellers were investigated using computational fluid dynamics (CFD) and experimental analyses. Solid concentration distribution, axial solid concentration profile, cloud height, solid integrated velocity, power consumption and just drawdown speed were investigated. Results showed that dislocated fractal impeller can enhance solid integrated velocity and fluid turbulent fluctuation intensity compared with dislocated pitched blade impeller, and eccentric agitation coupled with dislocated fractal impeller could destroy the typical circulation loops and symmetric flow field and improve the axial circulation efficiency of floating particles on the basis of dislocated fractal impeller. Eccentric agitation coupled with dislocated fractal impeller could further enhance the floating particle dispersion homogeneity (MI) and decrease the just drawdown speed (N
jd) on the basis of dislocated fractal impeller and dislocated pitched blade impeller at the specific power consumption. Meanwhile, eccentric ratio of 0.3 or 0.4 was optimal for the floating particle mixing process in this work.
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Affiliation(s)
- Deyin Gu
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Xin Li
- Chongqing HuanDing Environmental Protection Engineering Co., Ltd. , Chongqing 401320 , China
| | - Yi Wang
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Hui Xu
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Mei Ye
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Li Wen
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
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Gu D, Shi X, Liu Z. Intensification on drawdown process of floating particles by circle package fractal impellers. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2019.09.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Liu B, Gao P, Xu Z, Sunden B, Zheng Y. Experimental Investigation on Drawdown of Floating Particles in Viscous Systems Driven by Coaxial Mixers. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baoqing Liu
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
- Department of Energy Sciences, Lund University, Lund SE-22100, Sweden
| | - Pengfei Gao
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Zilong Xu
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Bengt Sunden
- Department of Energy Sciences, Lund University, Lund SE-22100, Sweden
| | - Yijun Zheng
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
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Paglianti A, Carletti C, Busciglio A, Montante G. Solid distribution and mixing time in stirred tanks: The case of floating particles. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22854] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alessandro Paglianti
- Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali; Alma Mater Studiorum − Università di Bologna; via Terracini 34, 40131 Bologna Italy
| | - Claudio Carletti
- Dipartimento di Chimica Industriale ”Toso Montanari”; Alma Mater Studiorum − Università di Bologna; via Terracini 34, 40131 Bologna Italy
| | - Antonio Busciglio
- Dipartimento di Chimica Industriale ”Toso Montanari”; Alma Mater Studiorum − Università di Bologna; via Terracini 34, 40131 Bologna Italy
| | - Giuseppina Montante
- Dipartimento di Chimica Industriale ”Toso Montanari”; Alma Mater Studiorum − Università di Bologna; via Terracini 34, 40131 Bologna Italy
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Li LC, Xu B. CFD simulation of floating particles suspension in a stirred tank. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0128-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chen T, Wang LQ, Wu DZ, Sun YB, Wu B, Li ZF. Investigation of the mechanism of low-density particle and liquid mixing process in a stirred vessel. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20578] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Tagawa A, Dohi N, Kawase Y. Volumetric Gas−Liquid Mass Transfer Coefficient in Aerated Stirred Tank Reactors with Dense Floating Solid Particles. Ind Eng Chem Res 2011. [DOI: 10.1021/ie1023222] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Atsushi Tagawa
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Naoki Dohi
- Mitsubishi Chemical Engineering Co., Shibaura, Minato-ku, Tokyo 108-0023, Japan
| | - Yoshinori Kawase
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350-8585, Japan
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Solids distribution and rising velocity of buoyant solid particles in a vessel stirred with multiple impellers. Chem Eng Sci 2008. [DOI: 10.1016/j.ces.2008.08.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kuzmanic N, Akrap M, Kovacevic A. An Experimental Investigation into the Complete Drawdown of Floating Solids in Dual-Impeller Stirred Vessels. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2006. [DOI: 10.1252/jcej.39.932] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nenad Kuzmanic
- Department of Chemical Engineering, Faculty of Chemical Technology, University of Split
| | - Marija Akrap
- Department of Chemical Engineering, Faculty of Chemical Technology, University of Split
| | - Antonija Kovacevic
- Department of Chemical Engineering, Faculty of Chemical Technology, University of Split
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Tagawa A, Dohi N, Kawase Y. Dispersion of Floating Solid Particles in Aerated Stirred Tank Reactors: Minimum Impeller Speeds for Off-Surface and Ultimately Homogeneous Solid Suspension and Solids Concentration Profiles. Ind Eng Chem Res 2005. [DOI: 10.1021/ie050634k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Atsushi Tagawa
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350−8585, Japan, and Mitsubishi Chemical Engineering Co., Towada, Kamisu-machi, Kashima-gun, Ibaraki 314-0102, Japan
| | - Naoki Dohi
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350−8585, Japan, and Mitsubishi Chemical Engineering Co., Towada, Kamisu-machi, Kashima-gun, Ibaraki 314-0102, Japan
| | - Yoshinori Kawase
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350−8585, Japan, and Mitsubishi Chemical Engineering Co., Towada, Kamisu-machi, Kashima-gun, Ibaraki 314-0102, Japan
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Bao Y, Gao Z, Hao Z, Long J, Shi L, Smith JM, Kirkby NF. Effects of Equipment and Process Variables on the Suspension of Buoyant Particles in Gas-Sparged Vessels. Ind Eng Chem Res 2005. [DOI: 10.1021/ie0504093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuyun Bao
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - Zhengming Gao
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - Zhigang Hao
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - Jiangang Long
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - Litian Shi
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - John M. Smith
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
| | - Norman F. Kirkby
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China, and Fluids and Systems Research Centre, School of Engineering (D2), University of Surrey, Guildford GU2 7XH, U.K
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Bao Y, Hao Z, Gao Z, Shi L, Smith J. Suspension of buoyant particles in a three phase stirred tank. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.10.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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