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CFD simulation of flow field and power characteristics in a vibromixer. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02749-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Computational and Experimental Analysis of Axial Flow Cyclone Used for Intake Air Filtration in Internal Combustion Engines. ENERGIES 2021. [DOI: 10.3390/en14082285] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The properties and advantages of axial flow cyclones are presented; several dozen of them are already widely used as the first stage of inlet air filtration in internal combustion motor vehicle engines, work machines and helicopters. The necessity to conduct research on cyclones to improve separation efficiency has been demonstrated. Using the commercial engineering software Ansys Fluent, at a constant inlet velocity of 10 m/s, an assessment was made on the effect of the separation length and inlet diameter of the outlet tube on changes in separation efficiency in axial flow cyclone. Each of the examined parameters was variable while maintaining other factors at a constant level. In the numerical calculations, test dust was used, which was the equivalent of AC fine dust, the particle size composition of which was taken into account using the Rosin–Rammler model. Increase in the separation efficiency was observed with an increase in the separation length and a decrease in the diameter of the cyclone inlet tube. For the cyclone model with an increased separation length and reduced diameter of the inlet pipe, numerical tests of separation efficiency and pressure drop were performed for various velocities at cyclone inlet in the range of 2.5–15 m/s. The obtained characteristics of modified axial flow cyclone were experimentally verified on a laboratory stand during cyclone prototype tests, the model of which was printed using the additive manufacturing technique.
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Numerical and Experimental Analysis of Flow Pattern, Pressure Drop and Collection Efficiency in a Cyclone with a Square Inlet and Different Dimensions of a Vortex Finder. ENERGIES 2020. [DOI: 10.3390/en14010111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The paper presents results of numerical simulations and experimental investigations of a cyclone with a square inlet and different dimensions of a vortex finder. Investigations were conducted for five, different cyclone models. The main goal of the research was to determine the influence of cyclone vortex finder geometry (diameter, length) on key parameters for a cyclone operation, such as: gas flow pattern, gas velocity and pressure distribution, pressure drop and collection efficiency. The analysis of flow pattern inside the cyclone was carried out with the use of CFD (Computational Fluid Dynamics) simulations, verified using CTA (Constant Temperature Anemometry). Similarly, pressure distributions, pressure drop and collection efficiency for cyclones were determined numerically and with measurements. The study demonstrated that dimensions of the vortex finder have a significant effect on a cyclone performance. The numerical visualisations of flow showed some unfavorable and beneficial effects and phenomena that may occur in cyclones. Moreover, the smallest pressure drop (305 Pa) was predicted for the cyclone with a maximum diameter of the vortex finder (De = 0.105 m), the largest (358 Pa) when this diameter was the smallest (De = 0.075 m). The tests did not show any significant influence of the vortex finder length on the pressure drop in a cyclone. A different tendency was observed in the case of collection efficiency. The maximum value of this parameter (89.5%) was predicted for the cyclone with the shortest vortex finder (s = 0.060 m), minimum (85.5%) when the vortex finder was the longest (s = 0.220 m). In this case, however, tests did not show a significant impact of an outlet diameter on the collection efficiency. Results and conclusions presented in this paper can be practically used for design optimization of cyclone separators, and also to select their operating parameters.
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Inglezakis VJ, Balsamo M, Montagnaro F. Liquid–Solid Mass Transfer in Adsorption Systems—An Overlooked Resistance? Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c05032] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Vassilis J. Inglezakis
- Chemical and Process Engineering Department, University of Strathclyde, Glasgow G1 1XJ, U.K
| | - Marco Balsamo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Naples 80126, Italy
| | - Fabio Montagnaro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Naples 80126, Italy
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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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Krawczyk J. Change in dust collection efficiency of liquid collectors in conditions of dedusting liquid recirculation. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2017. [DOI: 10.1515/pjct-2017-0060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The high efficiency of industrial wet scrubbers is the result of a simultaneous formation of dust particle collectors. Collectors can be understood as droplets of atomised liquid, bubbles formed in the conditions of intensive barbotage, liquid surface and wet surfaces. All collectors are formed during the operation of a circulating unit. The efficiency of dust collection process also depends on the ability of dust particles to be absorbed by collectors. The study provides an experimental analysis of the effect of the increasing concentration of a dust collection liquid in the conditions of full liquid recirculation on the efficiency of dust collection process in the examined types of collectors.
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Affiliation(s)
- Janusz Krawczyk
- Cracow University of Technology , Institute of Thermal and Process Engineering, Department of Industrial Equipment , 31-864 Cracow , Jana Pawła II 37, Poland
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Liu B, Zheng Y, Chen M, Chen X, Jin Z. CFD simulation of the mixing and dispersing of floating particles in a viscous system. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2017. [DOI: 10.1590/0104-6632.20170344s20160379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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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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Liu B, Zheng Y, Chen M, Huang B, Jin Z. Experimental study on the mixing and dispersing of floating particles in viscous system. CAN J CHEM ENG 2016. [DOI: 10.1002/cjce.22581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Baoqing Liu
- Institute of Process Equipment, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 Zhejiang China
| | - Yijun Zheng
- Institute of Process Equipment, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 Zhejiang China
| | - Mingqiang Chen
- Institute of Process Equipment, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 Zhejiang China
| | - Bolin Huang
- Institute of Process Equipment, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 Zhejiang China
| | - Zhijiang Jin
- Institute of Process Equipment, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 Zhejiang China
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Effect of impeller type and density difference on the draw down of low density microspheres. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2015.09.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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