1
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Guo R, Wu F, Che X, Zhang Y, Mao J. Effect of the novel combined internal devices on gas−solid flow behavior in spouted beds. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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2
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Deng B, Zhou T, Zhang Y, Zhang M, Huang Z, Yang H. Hydrodynamic characteristics in the full-loop circulating fluidized bed under load regulation. Part 2: Simulation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Zhang Y, Xu J, Chang Q, Zhao P, Wang J, Ge W. Numerical simulation of fluidization: Driven by challenges. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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4
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Zhalehrajabi E, Lau KK, Hagemeier T, Idris A. Evaluation of hydrodynamic behavior of urea granules in a pseudo-2D fluidized bed using drag models and comparison with PIV technique. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Liu X, Zhu A, Yang L, Xu J, Li H, Ge W, Ye M. Numerical simulation of commercial MTO fluidized bed reactor with a coarse-grained discrete particle method — EMMS–DPM. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Towards application of uncertainty quantification procedure combined with experimental procedure for assessment of the accuracy of the DEM approach dedicated for granular flow modeling. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117182] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Tu Q, Wang H, Ocone R. Application of three-dimensional full-loop CFD simulation in circulating fluidized bed combustion reactors – A review. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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The effect of arrangement in multi-cyclone filters on performance and the uniformity of fluid and particle flow distribution. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117191] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Li S, Shen Y. Numerical simulation of multiphase flow in a full coal-direct chemical looping combustion process. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117233] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Mendes FQ, Noriler D. Numerical prediction of cyclone efficiency curve using an Eulerian-Eulerian approach. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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11
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12
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CFD-DEM modeling of filtered fluid-particle drag and heat transfer in bidisperse gas-solid flows. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116896] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Effect of Connection Resistance between Cyclones and Backpass on Furnace Solids Suspension Density Profile and Circulation Rates in CFB. ENERGIES 2021. [DOI: 10.3390/en14196162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The connection section between cyclones and backpass is an important configuration in multi-cyclone circulating fluidized bed boilers (CFB). In this work, the resistance coefficient of different connection modes, and connection resistance distribution from each cyclone outlet to backpass (connection branch) in one mode are defined and calculated, in order to investigate their effects on furnace solids suspension density distribution and circulation rates. Three connection modes with different overall resistance coefficients were tested experimentally and analyzed by a 1.5-dimensional model in a four-cyclone scaling CFB apparatus. Both experimental and theoretical results show that, with larger overall resistance of a connection, there are more solids suspended in the furnace bottom and fewer in the top section. The investigation of the C-type connection has revealed that when the branch resistance of the connection decreases from branch No. 1–4, the solids suspension density and circulation rate from corresponding solids recycle loops (No. 1–4) increase. Moreover, the non-uniformity of connection branch resistance distribution will lead to uneven lateral solids suspension density distribution and circulation rates allocation. This effect is enhanced by growing superficial velocity.
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14
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15
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Mu L, Buist K, Kuipers J, Deen N. CFD-DEM simulations of riser geometry effect and cluster phenomena. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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16
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Investigation of cluster property in the riser of circulating fluidized bed with a wide particle size distribution. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Experimental Studies of Dust Suction Irregularity from Multi-Cyclone Dust Collector of Two-Stage Air Filter. ENERGIES 2021. [DOI: 10.3390/en14123577] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The necessity of two-stage (multi-cyclone-baffle) inlet air filters used for motor vehicle engines operating under dusty conditions was demonstrated. The advantages of a set of several dozen cyclones (multi-cyclone) used for filtering inlet air in the engines were shown. The problem of dust accumulation separated by the cyclones in the multi-cyclone dust collector and the necessity of its removal on a current basis were analyzed. Methods of removing dust from the dust collector by means of the QS suction flow were described. It was demonstrated that the most rational method of forcing the suction flow is the use of the suction flow released from the engine. The study results are presented in this paper and show that the removal (by suction) of the accumulated dust from the dust collector additionally causes a noticeable increase in cyclone filtration efficiency. It was shown that the effective suction flow must not exceed 10–15% of the outlet flow value from the cyclone. It was evidenced that the suction of dust from the dust collector of the multi-cyclone, whose range covers several dozen cyclones, causes a differentiation in the value of the suction flows from the individual cyclones, which decreases the effect of suction and interferers with the proper operation of the cyclone. The use of a proprietary methodology, an experimental study of the irregularity of the suction from the cyclones of two multi-cyclones differing in construction, was performed. Suction flows from the cyclones, which were located at a significant distance from the main suction duct, showed 50% lower values. Possibilities of reducing the irregularity of the suction flows from the several dozen cyclones forming the multi-cyclone are presented.
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18
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Liu X, Wang S, Du Y, Zheng M, Yang S, Wang H. CFD study of the thermochemical characteristics of mesoscale bubbles in a BFB gasifier. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.05.039] [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]
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19
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20
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CFD investigation of maldistribution in a full-loop circulating fluidized bed with double parallel cyclones. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.12.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Lei H, Zhu L, Luo Z. Study of filtered interphase heat transfer using
highly resolved CFD–DEM
simulations. AIChE J 2020. [DOI: 10.1002/aic.17121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- He Lei
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
| | - Li‐Tao Zhu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
| | - Zheng‐Hong Luo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai China
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22
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Lin J, Luo K, Wang S, Hu C, Fan J. An augmented coarse-grained CFD-DEM approach for simulation of fluidized beds. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.09.014] [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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23
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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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24
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Particle-Scale Simulation of Solid Mixing Characteristics of Binary Particles in a Bubbling Fluidized Bed. ENERGIES 2020. [DOI: 10.3390/en13174442] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The behavior of solid mixing dynamic is of profound significance to the heat transfer and reaction efficiencies in energy engineering. In the current study, the solid mixing characteristics of binary particles in the bubbling fluidized bed are further revealed at particle-scale. Specifically, the influences of gas superficial velocity, Sauter mean diameter (SMD) in the system and the range distribution of particle sizes on the performance of mixing index are quantitatively explored using a computational fluid dynamics-discrete element method (CFD-DEM) coupling model. The competition between solid segregation and the mixing of binary particles is deeply analyzed. There is a critical superficial velocity that maximizes the mixing index of the binary mixture in the bubbling fluidized bed. Solid mixing performs more aggressive when below the critical velocity, otherwise solid segregation overtakes mixing when above this critical velocity. Moreover, superficial velocity is a major factor affecting the mixing efficiency in the binary bubbling fluidized bed. Additionally, the mixing behavior is enhanced with the decrease of SMD while it is deteriorated in the binary system with a wide range of particle size distribution. Therefore, it is highly recommended to perform a binary particle system with smaller SMD and closer particle size distribution for the purpose of enhancing the mixing behavior. The significant understanding of mixing characteristics is expected to provide valuable references for the design, operation, and scale-up of binary bubbling fluidized bed.
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25
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Li S, Shen Y. Multi-fluid modelling of hydrodynamics in a dual circulating fluidized bed. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Kong D, Wang S, Zhou M, Luo K, Hu C, Li D, Fan J. Three-dimensional full-loop numerical simulation of co-combustion of coal and refuse derived fuel in a pilot-scale circulating fluidized bed boiler. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115612] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Eulerian-Lagrangian simulation of the full-loop gas-solid hydrodynamics in a pilot-scale circulating fluidized bed. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.05.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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CFD-DEM coupled with thermochemical sub-models for biomass gasification: Validation and sensitivity analysis. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115550] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Yue Y, Wang T, Shen Y. CFD-DEM study of effects of particle density on spout deflection behavior in a spout fluidized bed. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.03.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Yang S, Wang S. Shape Effect of the Riser Cross Section on the Full-Loop Hydrodynamics of a Three-Dimensional Circulating Fluidized Bed. ACS OMEGA 2020; 5:5784-5795. [PMID: 32226858 PMCID: PMC7097897 DOI: 10.1021/acsomega.9b03903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/02/2020] [Indexed: 05/12/2023]
Abstract
In this work, numerical simulation is carried out in a three-dimensional full-loop pilot-scale circulating fluidized bed to explore the shape effect of the riser cross section on the typical flow characteristics of the bed via the multiphase particle-in-cell (MP-PIC) method. The gas and solid phases are modeled with the large eddy simulation and Newton's law of motion in the Eulerian and Lagrangian frameworks, respectively. The proposed model has been well validated with experimental data, followed by evaluating the typical core-annulus structure and the nonuniformity of the solid phase distributed along the radial and axial directions of the riser. Then, the particle-scale information of the solid phase distributed in different parts of the system is explored. The results demonstrate that (i) the square riser gives rise to a higher solid inventory in the standpipe owing to the stronger circulation intensity; (ii) the thickness of the solid back-mixing layer reduces along the riser height; the solid back-mixing tends to concentrate in the four corners, while it is not obvious near the sidewalls of the square riser; and (iii) nonuniform distribution of the particle-scale information of the solid phase (e.g., mass, flux, drag force, and slip velocity) can be observed. The square riser gives rise to comparatively more uniform axial mass distribution, a larger rising solid flux, larger horizontal transportation velocity between the core and annulus regions, and a larger horizontal dispersion coefficient in the riser, as compared with the corresponding ones in the circular riser.
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Affiliation(s)
- Shiliang Yang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, P. R. China
| | - Shuai Wang
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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31
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Xie Z, Shen Y, Takabatake K, Yamaguchi A, Sakai M. Coarse-grained DEM study of solids sedimentation in water. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.11.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Yue Y, Shen Y. Particle-Scale Study of the Effect of Operating Conditions on Spout Deflection Behavior in a Flat-Bottomed Spout-Fluidized Bed. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05225] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuanhe Yue
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yansong Shen
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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33
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Computational Fluid Dynamics Simulation of Gas–Solid Hydrodynamics in a Bubbling Fluidized-Bed Reactor: Effects of Air Distributor, Viscous and Drag Models. Processes (Basel) 2019. [DOI: 10.3390/pr7080524] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this work, we employed a computational fluid dynamics (CFD)-based model with a Eulerian multiphase approach to simulate the fluidization hydrodynamics in biomass gasification processes. Air was used as the gasifying/fluidizing agent and entered the gasifier at the bottom which subsequently fluidized the solid particles inside the reactor column. The momentum exchange related to the gas-phase was simulated by considering various viscous models (i.e., laminar and turbulence models of the re-normalisation group (RNG), k-ε and k-ω). The pressure drop gradient obtained by employing each viscous model was plotted for different superficial velocities and compared with the experimental data for validation. The turbulent model of RNG k-Ɛ was found to best represent the actual process. We also studied the effect of air distributor plates with different pore diameters (2, 3 and 5 mm) on the momentum of the fluidizing fluid. The plate with 3-mm pores showed larger turbulent viscosities above the surface. The effects of drag models (Syamlal–O’Brien, Gidaspow and energy minimum multi-scale method (EMMS) on the bed’s pressure drop as well as on the volume fractions of the solid particles were investigated. The Syamlal–O’Brien model was found to forecast bed pressure drops most consistently, with the pressure drops recorded throughout the experimental process. The formation of bubbles and their motion along the gasifier height in the presence of the turbulent flow was seen to follow a different pattern from with the laminar flow.
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34
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Comparison of Riser-Simplified, Riser-Only, and Full-Loop Simulations for a Circulating Fluidized Bed. Processes (Basel) 2019. [DOI: 10.3390/pr7050306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
With the development of computing power, the simulation of circulating fluidized bed (CFB) has developed from riser-simplified simulation to riser-only simulation, then to full-loop simulation. This paper compared these three methods based on pilot-scale CFB experiment data to find the scope of application of each method. All these simulations, using the Eulerian–Eulerian two-fluid model with the kinetic theory of granular theory, were conducted to simulate a pilot-scale CFB. The hydrodynamics, such as pressure balance, solids holdup distribution, solids velocity distribution, and instantaneous mass flow rates in the riser or CFB system, were investigated in different simulations. By comparing the results from different methods, it was found that riser-simplified simulation is not sufficient to obtain accurate hydrodynamics, especially in higher solids circulating rates. The riser-only simulation is able to make a reasonable prediction of time-averaged behaviors of gas–solids in most parts of riser but the entrance region. Further, the full-loop simulation can not only predict precise results, but also obtain comprehensive details and instantaneous information in the CFB system.
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35
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Fitzgerald BW, Zarghami A, Mahajan VV, Sanjeevi SK, Mema I, Verma V, El Hasadi YM, Padding JT. Multiscale simulation of elongated particles in fluidised beds. CHEMICAL ENGINEERING SCIENCE: X 2019. [DOI: 10.1016/j.cesx.2019.100019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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36
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CFD-DEM study of the effect of ring baffles on system performance of a full-loop circulating fluidized bed. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.10.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Wang M, Wu Y, Shi X, Lan X, Wang C, Gao J. Full‐Loop Simulation of Gas‐Solids Flow in a Pilot‐Scale Circulating Fluidized Bed. Chem Eng Technol 2019. [DOI: 10.1002/ceat.201800542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min Wang
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
| | - Yingya Wu
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
| | - Xiaogang Shi
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
| | - Xingying Lan
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
| | - Chengxiu Wang
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
| | - Jinsen Gao
- China University of PetroleumState Key Laboratory of Heavy Oil Processing Fuxue Road 18 102249 Beijing China
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39
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Yang S, Wang S, Luo K, Fan J, Chew JW. Numerical investigation of the cluster property and flux distribution in three-dimensional full-loop circulating fluidized bed with multiple parallel cyclones. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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The Study on Numerical Simulation and Experiments of Four Product Hydrocyclone with Double Vortex Finders. MINERALS 2018. [DOI: 10.3390/min9010023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A hydrocyclone is an instrument that can effectively separate multi-phase mixtures of particles with different densities or sizes based on centrifugal sedimentation principles. However, conventional hydrocyclones lead to two products only, resulting in an over-wide particle size range that does not meet the requirements of subsequent operations. In this article, a two-stage series, a four product hydrocyclone is proposed. The first stage hydrocyclone is designed to be a coaxial double overflow pipe: under the effect of separation, fine particles are discharged from the internal overflow pipe, while medium-size particles are discharged from external overflow pipe before entering the second stage hydrocyclone for fine sedimentation. In other words, one-stage grading leads to four products, including the first stage underflow, the first stage overflow, the second stage underflow, and the second stage overflow. The effects of structural parameters and operational parameters on flow field distribution in hydrocyclone were investigated via a study of flow field distribution in multi-product hydrocyclones using numerical simulations. The application of four product hydrocyclone in iron recovery shows that the grade and recovery of iron concentrate exceed 65.08% and 86.14%, respectively. This study provides references for understanding the flow field distribution in hydrocyclones and development of multi-product grading instrument in terms of both theory and industrial applications.
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41
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Zhuang Y, Liu D, Chen X, Ma J, Xiong J, Liang C. Statistic model for predicting cluster movement in circulating fluidized bed (CFB) risers. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Wang S, Luo K, Hu C, Sun L, Fan J. Effect of superficial gas velocity on solid behaviors in a full-loop CFB. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.04.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Wang S, Luo K, Hu C, Fan J. Particle-Scale Investigation of Heat Transfer and Erosion Characteristics in a Three-Dimensional Circulating Fluidized Bed. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00353] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuai Wang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Kun Luo
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Chenshu Hu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Jianren Fan
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, People’s Republic of China
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44
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Method to estimate uncertainty associated with parcel size in coarse discrete particle simulation. AIChE J 2018. [DOI: 10.1002/aic.16100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Xu Y, Musser J, Li T, Gopalan B, Panday R, Tucker J, Breault G, Clarke MA, Rogers WA. Numerical Simulation and Experimental Study of the Gas–Solid Flow Behavior Inside a Full-Loop Circulating Fluidized Bed: Evaluation of Different Drag Models. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b03817] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yupeng Xu
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
| | - Jordan Musser
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
| | - Tingwen Li
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- AECOM, Morgantown, West Virginia 26505, United States
| | - Balaji Gopalan
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- West Virginia University Research Corporation, Morgantown, West Virginia 26506, United States
| | - Rupen Panday
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- REM Engineering Services, Morgantown, West Virginia 26506, United States
| | - Jonathan Tucker
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- West Virginia University, Morgantown, West Virginia 26506, United States
| | - Greggory Breault
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- REM Engineering Services, Morgantown, West Virginia 26506, United States
| | - Mary Ann Clarke
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
- West Virginia University Research Corporation, Morgantown, West Virginia 26506, United States
| | - William A. Rogers
- National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
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