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Zhou Y, Wang T, Zhu J. Development of gas-solid fluidization: Particulate and aggregative. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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2
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Khongprom P, Ratchasombat S, Wanchan W, Bumphenkiattikul P, Limtrakul S. Scaling of catalytic cracking fluidized bed downer reactor based on CFD simulations-Part II: effect of reactor scale. RSC Adv 2022; 12:21394-21405. [PMID: 35975037 PMCID: PMC9344901 DOI: 10.1039/d2ra03448d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/17/2022] [Indexed: 12/04/2022] Open
Abstract
The practical realization of the scaling up of gas–solid multiphase flow reactors with chemical reactions is hindered by chaotic flow behaviors and complex heat and mass transfers in the reactor. In addition, a law to scale up complex reaction mechanisms in multiphase flow systems has been rarely proposed in the existing literature. Thus, this study aims to investigate the scaling up of the catalytic cracking fluidized bed downer reactor based on the similitude method of chemical reaction performance. Three downer reactor scales with a height of 5, 15, and 30 m, were investigated. To anticipate the behavior of reactive flow, a Eulerian–Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow. A four-lump kinetic model was chosen to represent the mechanism of the catalytic cracking reaction of heavy oil from the pyrolysis of waste plastic. The CFD model accurately predicted the species composition distribution. The scaling law based on the geometric similarity, kinematic similarity, and chemical reaction similarity, was proposed. The catalytic cracking performance similarity of the downer reactor was obtained. With variances in the range of 10% and mean relative absolute error less than 5%, the axial and lateral distributions of chemical performance (heavy oil conversion, gasoline mass fraction, and gasoline selectivity) were found to be extremely similar. The modified scaling law based on the similitude method for a catalytic cracking downer reactor was proposed for various reactor scales. An excellent similarity of chemical performance of complex catalytic cracking was obtained.![]()
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Affiliation(s)
- Parinya Khongprom
- Department of Chemical Engineering, Faculty of Engineering, Prince of Songkla University Songkhla 90110 Thailand .,Air Pollution and Health Effect Research Center, Prince of Songkla University Songkhla 90110 Thailand
| | - Supawadee Ratchasombat
- Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok Bangsue Bangkok 10800 Thailand
| | - Waritnan Wanchan
- Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok Bangsue Bangkok 10800 Thailand
| | - Panut Bumphenkiattikul
- Simulation Technology, Digital Manufacturing, Chemicals Business, SCG 1 Siam Cement Road, Bang sue Bangkok 10800 Thailand.,The Thai Institute of Chemical Engineering and Applied Chemistry, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University Bangkok 10330 Thailand
| | - Sunun Limtrakul
- Department of Chemical Engineering, Faculty of Engineering, Kasetsart University Jatujak Bangkok 10900 Thailand
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Liu Y, Shi X, Wu Y, Wang C, Gao J, Lan X. CPFD simulation of cluster effect on mass transfer and reaction in downer with FCC particles. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang B, Yang J, Zheng Q, Lian W, Zhang Z, Hao X, Guan G. Centrifugal force caused high-density rotating downward quasi-plug flow in cyclone reactors. CHEMICAL ENGINEERING SCIENCE: X 2021. [DOI: 10.1016/j.cesx.2021.100101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Gómez N, Molina A, Marin GB, Van Geem KM. From 3D to 1D: Capturing the effect of particle clusters in downers in the fluid catalytic cracking of gasoil. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.04.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Particle Lagrangian CFD Simulation and Experimental Characterization of the Rounding of Polymer Particles in a Downer Reactor with Direct Heating. Processes (Basel) 2021. [DOI: 10.3390/pr9060916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Polypropylene (PP) powders are rounded at different conditions in a downer reactor with direct heating. The particles are fed through a single central tube, while the preheated sheath gas is fed coaxially surrounding the central aerosol jet. The influence of the process parameters on the quality of the powder product in terms of particle shape and size is analyzed by correlating the experimental results with the flow pattern, residence time distribution of the particles and temperature distribution predicted by computational fluid dynamics (CFD) simulations. An Eulerian–Lagrangian numerical approach is used to capture the effect of the particle size distribution on the particle dynamics and the degree of rounding. The simulation results reveal that inlet effects lead to inhomogeneous particle radial distributions along the total length of the downer. The configuration of particle/gas injection also leads to fast dispersion of the particles in direction of the wall and to particle segregation by size. Broad particle residence time distributions are obtained due to broad particle size distribution of the powders and the particles dispersion towards the wall. Lower mass flow ratios of aerosol to sheath gas are useful to reduce the particle dispersion and produce more homogenous residence time distributions. The particles’ residence time at temperatures above the polymer’s melting onset is determined from the simulations. This time accounts for the effective treatment (rounding) time of the particles. Clear correlations are observed between the numerically determined effective rounding time distributions and the progress of shape modification on the particles determined experimentally.
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Zhang H, Li W, Ma Q, Zhang Y, Lei F. Numerical study on influence of exit geometry in gas–solid flow hydrodynamics of HDCFB riser by CPFD. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kuang S, Li K, Shrestha S, Yu A. Discrete particle simulation of heterogeneous gas-solid flows in riser and downer reactors. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.07.080] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wu Y, Shi X, Liu Y, Wang C, Gao J, Lan X. 3D CPFD simulation of gas-solids flow in the high-density downer with FCC particles. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.06.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alabdullah MA, Gomez AR, Vittenet J, Bendjeriou-Sedjerari A, Xu W, Abba IA, Gascon J. A Viewpoint on the Refinery of the Future: Catalyst and Process Challenges. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02209] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mohammed A. Alabdullah
- King Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Advanced Catalytic Materials, Thuwal 23955-6900, Saudi Arabia
| | - Alberto Rodriguez Gomez
- King Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Advanced Catalytic Materials, Thuwal 23955-6900, Saudi Arabia
| | - Jullian Vittenet
- King Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Advanced Catalytic Materials, Thuwal 23955-6900, Saudi Arabia
| | - Anissa Bendjeriou-Sedjerari
- King Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Advanced Catalytic Materials, Thuwal 23955-6900, Saudi Arabia
| | - Wei Xu
- Saudi Aramco, Chemicals R&D, Research and Development Center, Dhahran 34464, Saudi Arabia
| | - Ibrahim A. Abba
- Saudi Aramco, Chemicals R&D, Research and Development Center, Dhahran 34464, Saudi Arabia
| | - Jorge Gascon
- King Abdullah University of Science and Technology, KAUST Catalysis Center (KCC), Advanced Catalytic Materials, Thuwal 23955-6900, Saudi Arabia
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Lian W, Pan X, Li Z, Yang J, Hao X, Zhang H, Fushimi C, Tsutsumi A, Huang W, Guan G. A drag model considering the particle size distribution via multi-subgrid for the simulation of downer. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2019.115363] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Wu Y, Shi X, Liu Y, Wang C, Gao J, Lan X. 3D CPFD simulations of gas-solids flow in a CFB downer with cluster-based drag model. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.07.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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3D CPFD Simulation of Circulating Fluidized Bed Downer and Riser: Comparisons of Flow Structure and Solids Back-Mixing Behavior. Processes (Basel) 2020. [DOI: 10.3390/pr8020161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The difference of gas-solids flow between a circulating fluidized bed (CFB) downer and riser was compared by computational particle fluid dynamics (CPFD) approach. The comparison was conducted under the same operating conditions. Simulation results demonstrated that the downer showed much more uniform solids holdup and solids velocity distribution compared with the riser. The radial non-uniformity index of the solids holdup in the riser was over 10 times than that in the downer. In addition, small clusters tended to be present in the whole downer, large clusters tended to be present near the wall in riser. It was found that the different cluster behavior is important in determining the different flow behaviors of solids in the downer and riser. While the particle residence time increased evenly along the downward direction in the downer, particles with both shorter and longer residence time were predicted in the whole riser. The nearly vertical cumulative residence time distribution (RTD) curve in the downer further demonstrated that the solids back-mixing in the downer is limited while that in the riser is severe. Solids turbulence in the downer was much weaker compared with the riser, while the large clusters formation near the wall in the riser would hinder solids transportation ability.
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Khongprom P, Ratchasombat S, Wanchan W, Bumphenkiattikul P, Limtrakul S. Scaling of a catalytic cracking fluidized bed downer reactor based on computational fluid dynamics simulations. RSC Adv 2020; 10:2897-2914. [PMID: 35496099 PMCID: PMC9048978 DOI: 10.1039/c9ra10080f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/08/2020] [Indexed: 11/26/2022] Open
Abstract
Circulating fluidized bed downer reactors (downer reactors) exhibit good heat and mass transfer, and the flow behavior approaches the ideal plug flow. This reactor is superior for catalytic cracking reactions in which the intermediate is the desired product. However, the hydrodynamic behavior and reactor performance have mostly been investigated in small-scale or laboratory-scale reactors. The objective of this study was to investigate the up-scaling of the catalytic cracking of heavy oil in three downer reactors with heights of 5, 15, and 30 m, using computational fluid dynamics simulations. A two-fluid model with the kinetic theory of granular flow was used to predict the hydrodynamics and performance of the chemical reactions. The kinetics of catalytic cracking of heavy oil were described by a 4-lump kinetic model. The chemical performance similarity was identified by using radial and axial distributions of heavy oil conversion, gasoline mass fraction, and gasoline selectivity. The chemical performance similarity cannot be achieved by using the hydrodynamic similarity parameter . A modified up-scaling parameter was proposed, . The chemical performance similarity of identical catalytic cracking downer reactors can be achieved with deviation in the range of ±10% and mean relative absolute error of less than 5%. Circulating fluidized bed downer reactors (downer reactors) exhibit good heat and mass transfer, and the flow behavior approaches the ideal plug flow.![]()
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Affiliation(s)
- Parinya Khongprom
- Department of Industrial Chemistry
- Faculty of Applied Science
- King Mongkut's University of Technology North Bangkok
- Bangkok 10800
- Thailand
| | - Supawadee Ratchasombat
- Department of Industrial Chemistry
- Faculty of Applied Science
- King Mongkut's University of Technology North Bangkok
- Bangkok 10800
- Thailand
| | - Waritnan Wanchan
- Department of Industrial Chemistry
- Faculty of Applied Science
- King Mongkut's University of Technology North Bangkok
- Bangkok 10800
- Thailand
| | - Panut Bumphenkiattikul
- Department of Chemical Engineering
- Faculty of Engineering
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Sunun Limtrakul
- Department of Chemical Engineering
- Faculty of Engineering
- Kasetsart University
- Bangkok 10900
- Thailand
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15
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Yan D, Li H, Hu C, Zhu Q, Xie Z. Simulation of mass transfer in downer fluidized beds with a structure-based consideration. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.115235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Li Y, Zhang X, Zhai G, Zhang H, Li T, Sun Q, Ying W. LDV measurements of particle velocity distribution in an annular stripper. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Lian W, Pan X, Zheng S, Zhang W, Zhang H, Fushimi C, Tsutsumi A, Hao X, Huang W, Guan G. Mechanism analysis of the solids holdup variations in downer reactors based on volumetric flux. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.04.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Gomez N, Molina A. Analysis of the Particle Clustering Phenomenon in the Fluid Catalytic Cracking of Gasoil in a Downer Reactor. Chem Eng Technol 2019. [DOI: 10.1002/ceat.201800463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Noel Gomez
- Universidad Nacional de Colombia, Sede MedellínFacultad de Minas, Departamento de Proceso y Energía, Grupo de investigación en Bioprocesos y Flujos Reactivos Carrera 80 No. 65-223 050036 Medellín Colombia
- Ghent UniversityLaboratory for Chemical Technology Technologiepark 121 9020 Zwijnaarde Belgium
| | - Alejandro Molina
- Universidad Nacional de Colombia, Sede MedellínFacultad de Minas, Departamento de Proceso y Energía, Grupo de investigación en Bioprocesos y Flujos Reactivos Carrera 80 No. 65-223 050036 Medellín Colombia
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20
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Zhu L, Li A, Wang Z. Analysis of particle trajectories in a quick-contact cyclone reactor using a discrete phase model. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1386683] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Liyun Zhu
- State Key Laboratory of Heavy Oil, China University of Petroleum (East China), Qingdao, Shandong, China
| | - Anjun Li
- State Key Laboratory of Heavy Oil, China University of Petroleum (East China), Qingdao, Shandong, China
| | - Zhenbo Wang
- State Key Laboratory of Heavy Oil, China University of Petroleum (East China), Qingdao, Shandong, China
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21
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Sachs M, Friedle M, Schmidt J, Peukert W, Wirth KE. Characterization of a downer reactor for particle rounding. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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22
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Liu W, Li H, Zhu Q. Modeling the hydrodynamics of downer reactors based on the meso-scale structure. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2016.09.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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24
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Schöß MA, Schulenburg F, Turek T. Oxidation of copper at high temperature as an example for gas-solid reactions in a downer reactor – experiments and model-based analysis. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2016.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Chaiwat W, Wongsagonsup R, Tangpanichyanon N, Jariyaporn T, Deeyai P, Suphantharika M, Fuongfuchat A, Nisoa M, Dangtip S. Argon Plasma Treatment of Tapioca Starch Using a Semi-continuous Downer Reactor. FOOD BIOPROCESS TECH 2016. [DOI: 10.1007/s11947-016-1701-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Zhu X, Zhang Q, Wang Y, Wei F. Review on the nanoparticle fluidization science and technology. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2015.06.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Shu Z, Wang J, Zhou Q, Fan C, Li S. Evaluation of multifluid model for heat transfer behavior of binary gas–solid flow in a downer reactor. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.04.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Akah A, Al-Ghrami M. Maximizing propylene production via FCC technology. APPLIED PETROCHEMICAL RESEARCH 2015. [DOI: 10.1007/s13203-015-0104-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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29
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Wang C, Li C, Zhu J. Axial solids flow structure in a high density gas–solids circulating fluidized bed downer. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2014.11.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Wang C, Li C, Zhu J, Wang C, Barghi S, Zhu J. A comparison of flow development in high density gas-solids circulating fluidized bed downer and riser reactors. AIChE J 2015. [DOI: 10.1002/aic.14728] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chengxiu Wang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering; China University of Petroleum; Qingdao 266555 China
| | - Chunyi Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering; China University of Petroleum; Qingdao 266555 China
| | - Jesse Zhu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering; China University of Petroleum; Qingdao 266555 China
| | - Chengxiu Wang
- Dept. of Chemical & Biochemical Engineering; University of Western Ontario; London ON Canada N6A 5B9
| | - Shahzad Barghi
- Dept. of Chemical & Biochemical Engineering; University of Western Ontario; London ON Canada N6A 5B9
| | - Jesse Zhu
- Dept. of Chemical & Biochemical Engineering; University of Western Ontario; London ON Canada N6A 5B9
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31
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Li W, Yu K, Liu B, Yuan X. Computational fluid dynamics simulation of hydrodynamics and chemical reaction in a CFB downer. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2014.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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32
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Sachs M, Schmidt J, Toni F, Blümel C, Winzer B, Peukert W, Wirth KE. Rounding of Irregular Polymer Particles in a Downer Reactor. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.proeng.2015.01.119] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Schmidt J, Sachs M, Blümel C, Winzer B, Toni F, Wirth KE, Peukert W. A novel process route for the production of spherical LBM polymer powders with small size and good flowability. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.04.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Wang C, Barghi S, Zhu J. Hydrodynamics and reactor performance evaluation of a high flux gas-solids circulating fluidized bed downer: Experimental study. AIChE J 2014. [DOI: 10.1002/aic.14534] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chengxiu Wang
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London Ontario Canada N6A 5B9
| | - Shahzad Barghi
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London Ontario Canada N6A 5B9
| | - Jesse Zhu
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London Ontario Canada N6A 5B9
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35
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Garić-Grulović R, Kaluđerović Radoičić T, Arsenijević Z, Đuriš M, Grbavčić Ž. Hydrodynamic modeling of downward gas–solids flow. Part I: Counter-current flow. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.01.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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37
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38
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Yoshie Y, Ishizuka M, Guan G, Fushimi C, Tsutsumi A. A novel experimental technique to determine the heat transfer coefficient between the bed and particles in a downer. ADV POWDER TECHNOL 2013. [DOI: 10.1016/j.apt.2012.11.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Chalermsinsuwan B, Gidaspow D, Piumsomboon P. Comparisons of particle cluster diameter and concentration in circulating fluidized bed riser and downer using computational fluid dynamics simulation. KOREAN J CHEM ENG 2013. [DOI: 10.1007/s11814-012-0216-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Chuachuensuk A, Paengjuntuek W, Kheawhom S, Arpornwichanop A. A systematic model-based analysis of a downer regenerator in fluid catalytic cracking processes. Comput Chem Eng 2013. [DOI: 10.1016/j.compchemeng.2012.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Cheng Y, Guan G, Ishizuka M, Fushimi C, Tsutsumi A, Wang CH. Numerical simulations and experiments on heat transfer around a probe in the downer reactor for coal gasification. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2012.10.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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42
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Samruamphianskun T, Piumsomboon P, Chalermsinsuwan B. Computation of system turbulences and dispersion coefficients in circulating fluidized bed downer using CFD simulation. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2012.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Yan B, Xu P, Jin Y, Cheng Y. Understanding coal/hydrocarbons pyrolysis in thermal plasma reactors by thermodynamic analysis. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Affiliation(s)
- Alireza Abbasi
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London ON Canada
- Reactech Process Development Inc.; Markham ON Canada
| | - Mohammad Ashraful Islam
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London ON Canada
| | - Paul E. Ege
- Reactech Process Development Inc.; Markham ON Canada
| | - Hugo I. de Lasa
- Dept. of Chemical and Biochemical Engineering; The University of Western Ontario; London ON Canada
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Cheng Y, Lau DYJ, Guan G, Fushimi C, Tsutsumi A, Wang CH. Experimental and Numerical Investigations on the Electrostatics Generation and Transport in the Downer Reactor of a Triple-Bed Combined Circulating Fluidized Bed. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3011879] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yongpan Cheng
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Darren Yan Jun Lau
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Guoqing Guan
- North Japan Research Institute
for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3 Matsubara, Aomori 030-0813, Japan
| | - Chihiro Fushimi
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16
Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Atsushi Tsutsumi
- Collaborative Research Center
for Energy Engineering, Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo
153-8505, Japan
| | - Chi-Hwa Wang
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
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Abbasi A, Islam MA, Ege PE, de Lasa HI. Downer reactor flow measurements using CREC-GS-Optiprobes. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fushimi C, Guan G, Nakamura Y, Ishizuka M, Tsutsumi A, Suzuki Y, Cheng Y, Lim EWC, Wang CH. Mixing behaviors of cold–hot particles in the downer of a triple-bed combined circulating fluidized bed. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2011.12.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Guan G, Ishizuka M, Fushimi C, Suzuki Y, Tsutsumi A. Downward Gas–Solids Flow Characteristics in a High-Density Downer Reactor. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2012. [DOI: 10.1252/jcej.12we125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guoqing Guan
- North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University
| | - Masanori Ishizuka
- Collaborative Research Center for Energy Engineering, Department of Mechanical and Biofunctional Systems, Institute of Industrial Science, The University of Tokyo
| | - Chihiro Fushimi
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology
| | - Yoshizo Suzuki
- Clean Gas Group, Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology
| | - Atsushi Tsutsumi
- Collaborative Research Center for Energy Engineering, Department of Mechanical and Biofunctional Systems, Institute of Industrial Science, The University of Tokyo
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49
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Kim YN, Wu C, Cheng Y. CFD simulation of hydrodynamics of gas–solid multiphase flow in downer reactors: revisited. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.07.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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50
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Flow behaviors in the downer of a large-scale triple-bed combined circulating fluidized bed system with high solids mass fluxes. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.06.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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