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Goswami S, Manna S, Suman SK, Sharma VK, Satpati SK, Sahu ML, Pant HJ. Investigation of aqueous phase dynamics in a uranium stripping unit using radioactive tracer. Appl Radiat Isot 2022; 189:110404. [PMID: 36029641 DOI: 10.1016/j.apradiso.2022.110404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/20/2022] [Accepted: 08/04/2022] [Indexed: 11/28/2022]
Abstract
Mixer-setters units are widely used in uranium purification processes. For efficient operations of mixer-settler units, it is essential to measure the hydrodynamics parameters of the different phases involved. The residence time distribution (RTD) measurement is commonly used method to estimate the hydrodynamics parameters of process reactors. In the present study, RTD of the aqueous phase was measured in different stages mixer-settler unit (mixers, settlers and mixer-settler units) used for stripping operation using Iodine-131 as a radiotracer. For the RTD measurements, radiotracer was injected as an impulse in aqueous phase feed line and its movement was monitored at different locations in the stripping unit using NaI(Tl) detectors. The mean residence times (MRTs) of the aqueous phase were estimated from measured RTD curves. For quantification of the degree of mixing, suitable flow models were proposed based on design and nature of the measured RTD curves and subsequently used for simulation. Based on the results of the RTD study, the mixing of aqueous phase was characterized and design of the stripping unit and its sub-units were validated. The optimum conditions were identified for efficient for the operation of the stripping unit.
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Affiliation(s)
- Sunil Goswami
- Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Shubhankar Manna
- Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Santosh K Suman
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Vijay K Sharma
- Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Santosh K Satpati
- Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Manharan L Sahu
- Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Harish J Pant
- Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
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Shahcheraghi SH, Mousavi SM, Dianatpour M. An improved control strategy for an industrial copper solvent extraction process. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.2007132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Seyed Hadi Shahcheraghi
- Department of Mining Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
- Laboratory & Quality Control Unit, Gohar Zamin Iron Ore Company, Sirjan, Iran
| | | | - Mehdi Dianatpour
- Laboratory & Quality Control Unit, Gohar Zamin Iron Ore Company, Sirjan, Iran
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Zhou H, Yu X, Wang B, Jing S, Lan W, Li S. CFD–PBM Simulation of Liquid–Liquid Dispersions in a Pump-Mixer. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05745] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Han Zhou
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Xiong Yu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Bo Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Shan Jing
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Wenjie Lan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Shaowei Li
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Zhou H, Yang J, Jing S, Lan W, Zheng Q, Li S. Influence of Dispersed-Phase Viscosity on Droplet Breakup in a Continuous Pump-Mixer. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05239] [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)
| | | | | | - Wenjie Lan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
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Gu D, Liu Z, Xu C, Tao C, Wang Y. PIV Measurement and CFD Simulation of Liquid-Liquid Mixing in Mixer Settler with Rigid-Flexible Impeller. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2019. [DOI: 10.1515/ijcre-2019-0065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Particle image velocimetry (PIV) was used to measure the flow field in the mixing chamber of a mixer settler. An Eulerian-Eulerian approach, standard k-ε turbulence model, and multiple reference frames (MRF) technique were employed to simulate liquid-liquid two-phase flow, turbulent flow, and impeller rotation in the mixer settler, respectively. The effects of impeller type, impeller clearance and baffle configuration on the flow field were analyzed. Results showed that rigid-flexible impeller can spread the impeller energy more uniformly in the mixing chamber and increase the velocity of the continuous phase through the multi-body motion of flexible sheet compared with rigid impeller. The flow numbers of RF-RT, RF-PBT and RF-CBT systems were increased by 46 %, 54 % and 43 %, respectively, compared with RT, PBT and CBT systems. Meanwhile, the suction capacity of impeller was enhanced with a decreased impeller clearance, and the backflow was eliminated by the installation of baffles.
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Sarkar S, Singh K, Shenoy K. Axial dispersion and pressure drop for single-phase flow in annular pulsed disc and doughnut columns: A CFD study. PROGRESS IN NUCLEAR ENERGY 2018. [DOI: 10.1016/j.pnucene.2018.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Huang Y, Wu B, Chen K, Zhu J, Ji L, Wu Y, Shen Z. CFD simulation of single-phase suction head and power consumption in a delta impeller pump-mixer. ASIA-PAC J CHEM ENG 2016. [DOI: 10.1002/apj.2033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Huang
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Bin Wu
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Kui Chen
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Jiawen Zhu
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Lijun Ji
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Yanyang Wu
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
| | - Zujun Shen
- Chemical Engineering Research Centre; East China University of Science and Technology; Shanghai 200237 P. R. China
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8
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CFD simulation and PIV measurement of liquid–liquid two-phase flow in pump-mix mixer. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.10.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Darekar M, Singh K, Mukhopadhyay S, Shenoy K. Single-stage micro-scale extraction: Studies with single microbore tubes and scale-up. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2015.11.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sen N, Singh K, Patwardhan A, Mukhopadhyay S, Shenoy K. CFD Simulations of Pulsed Sieve Plate Column: Axial Dispersion in Single-phase Flow. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1064136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Darekar M, Singh KK, Shenoy KT, Kundu G, Rao H, Ghosh SK. Numerical simulations to evaluate basic geometrical shapes as headers for equal liquid flow distribution. ASIA-PAC J CHEM ENG 2014. [DOI: 10.1002/apj.1814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mayur Darekar
- Department of Chemical Engineering; Indian Institute of Technology; Kharagpur India 721302
- Chemical Engineering Division; Bhabha Atomic Research Centre; Trombay Mumbai Maharashtra India 400085
| | - K. K. Singh
- Chemical Engineering Division; Bhabha Atomic Research Centre; Trombay Mumbai Maharashtra India 400085
| | - K. T. Shenoy
- Chemical Engineering Division; Bhabha Atomic Research Centre; Trombay Mumbai Maharashtra India 400085
| | - G. Kundu
- Department of Chemical Engineering; Indian Institute of Technology; Kharagpur India 721302
| | - H. Rao
- Chemical Engineering Division; Bhabha Atomic Research Centre; Trombay Mumbai Maharashtra India 400085
| | - S. K. Ghosh
- Chemical Engineering Division; Bhabha Atomic Research Centre; Trombay Mumbai Maharashtra India 400085
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CFD study of single phase and multiphase (liquid–liquid) pump-mixer: Analyzing design parameters, flow structures and turbulence. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.01.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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