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1. Numerical simulation on structure optimization of escape-pipe of cyclone separator with downward outlet

Author:
Leilei Zhang; Yanxin Chen; Bo Zhao; Minhui Dang; Yanfei Yao
Source:
Powder technology 2022 v.411 pp. 117588
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; mathematical models; pulverized coal; pyrolysis; technology;     Show all 5 Subjects
Abstract:
... In this paper we report on the development of a downward outlet cyclone separator suitable for use as a primary device for pyrolysis gas-coke separation in pulverized coal pyrolysis processes. The downward outlet cyclone separator consists of cylindrical shell that is joined by a cone, to which a downward exhaust pipe is connected. The characteristics of the pyrolysis coke separator were numerical ...
DOI:
10.1016/j.powtec.2022.117588

2. Development of a high-volume ambient aerosol sampling inlet with an adjustable cutoff size and its performance evaluation using road dust

Author:
Jun-Hyung Lim; Se-Jin Yook
Source:
Environmental research 2022 v.204 pp. 112302
ISSN:
0013-9351
Subject:
cyclone separators,   etc   ; aerosols; air flow; dust; particle size; particulates; research; streams;     Show all 8 Subjects
Abstract:
... Aerosol samplers are generally classified into particulate matter (PM₂.₅ or PM₁₀) and total suspended particle (TSP) samplers. As changing the cutoff size is cumbersome, it necessitates either replacing the particle size separator or adjusting the sampling flow rate. In this study, a novel high-volume aerosol-sampling inlet with an adjustable cutoff size was developed. Its performance was evaluate ...
DOI:
10.1016/j.envres.2021.112302

3. A model for predicting the separation performance of a coupling cyclone with a built-in granular bed filter

Author:
Ming Chang; Yiping Fan; Jinzhuang Fu; Yongqi Li; Chunxi Lu
Source:
Powder technology 2022 v.399 pp. 116941
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; couplings; data analysis; dust; dusting; filters; gases; models; powders; prediction;     Show all 10 Subjects
Abstract:
... A separator coupling cyclone with built-in granular bed filter was proposed for gas purification. By analyzing available data in published literature and experimental results, a new model for predicting the separation performance of the coupled separator was obtained by regressing against a broad range of parameter governing the dusts collection in the coupled separator. In particular, the mutual ...
DOI:
10.1016/j.powtec.2021.10.049

4. DPM simulation of particle revolution and high-speed self-rotation in different pre-self-rotation cyclones

Author:
Pengbo Fu; Jingyi Zhu; Qiqi Li; Tingting Cheng; Fangzheng Zhang; Yuang Huang; Liang Ma; Guangli Xiu; Hualin Wang
Source:
Powder technology 2021 v.394 pp. 290-299
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; pollutants; technology;     Show all 3 Subjects
Abstract:
... The study of the particle movement in cyclone has been expanded from revolution to high-speed self-rotation, and produced a series of new technologies and new applications. However, the spatial rules and regulation methods of particle high-speed self-rotation in cyclones are yet to be studied. In this study, four kinds of inlet particle pre-self-rotation cyclones were designed, and the effect of t ...
DOI:
10.1016/j.powtec.2021.08.059

5. Thermodynamics analysis of CO2 condensation in supersonic flows for the potential of clean offshore natural gas processing

Author:
Chuang Wen; Bo Li; Hongbing Ding; Mohammad Akrami; Haoran Zhang; Yan Yang
Source:
Applied energy 2022 v.310 pp. 118523
ISSN:
0306-2619
Subject:
cyclone separators,   etc   ; carbon dioxide; carbon sequestration; droplets; energy; feasibility studies; liquids; mass flow; mass transfer; natural gas; oil and gas industry; phase transition; thermodynamics;     Show all 13 Subjects
Abstract:
... The separation technology of carbon dioxide (CO₂) is a key step to achieve high efficient carbon capture and storage targets. In the present study, we propose a new concept to remove CO₂ from the offshore natural gas industry, which utilises the combined effect from nonequilibrium condensation phenomena in the supersonic flow and cyclonic separation process from swirling flows. The feasibility stu ...
DOI:
10.1016/j.apenergy.2022.118523

6. A low-cost solution for the collection of fine particles in square cyclone: A numerical analysis

Author:
Esmaeel Fatahian; Hossein Fatahian; Ebrahim Hosseini; Goodarz Ahmadi
Source:
Powder technology 2021 v.387 pp. 454-465
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; fluid mechanics; technology;     Show all 3 Subjects
Abstract:
... Generally, the square cyclone separator suffers from low separation efficiency. Therefore, a deeper investigation for developing an effective method to enhance this type of cyclone's overall performance is of interest. Although different methods are available, optimizing the vortex finder's shape for enhancing separation efficiency is a low-cost solution. The present study assesses the effect of v ...
DOI:
10.1016/j.powtec.2021.04.048

7. Gasification of kitchen wastes in an updraft fluidized bed gasifier and simulation of the process with Aspen Plus

Author:
Jannatun Fatema; Tanvir Ahmed; Md. Minhajul Islam; Md. Nurus Sakib; A.M. Sarwaruddin Chowdhury; Papia Haque
Source:
Journal of cleaner production 2022 v.371 pp. 133670
ISSN:
0959-6526
Subject:
cyclone separators,   etc   ; air; air flow; bagasse; carbon; carbon dioxide; coal; computer software; energy; fluidized beds; gasification; heat; kitchen waste; models; pollution; temperature; water content; wood;     Show all 18 Subjects
Abstract:
... Kitchen wastes can be converted into a gaseous source for the generation of energy rather than being dumped around recklessly which results into environment pollution. Less amount of carbon in the wastes (56%) can lead to a decrease in the amount of carbonaceous gases produced in gasification than that from other energy sources like coal, wood and bagasse. The gasification of kitchen wastes was ca ...
DOI:
10.1016/j.jclepro.2022.133670

8. Effects of the inlet duct length on the flow field and performance of a cyclone separator with a contracted inlet duct

Author:
Yuge Yao; Wenshi Huang; Yuxin Wu; Yang Zhang; Man Zhang; Hairui Yang; Junfu Lyu
Source:
Powder technology 2021 v.393 pp. 12-22
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; friction; mathematical models; technology;     Show all 4 Subjects
Abstract:
... The inlet duct length may affect the gas flow field and performance of a cyclone separator with a contracted inlet duct. In this study, a numerical simulation using the Eulerian-Lagrangian approach with a one-way coupling method was conducted to evaluate the gas flow field and separation efficiency of the cyclone separators with contracted inlet ducts of different lengths. The simulation results i ...
DOI:
10.1016/j.powtec.2021.07.044

9. The effect of fluctuating boundary on flow field and performance parameters of cyclone separator

Author:
Javad Vaziri Naeen Nejad; Saeid Kheradmand
Source:
Powder technology 2021 v.390 pp. 401-416
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; energy; technology; turbulent flow;     Show all 4 Subjects
Abstract:
... In this study, fluctuation with three frequencies is applied to the boundaries of the cyclone separator. Flow field including dominant frequency and amplitude of vortices at three regions (vortex finder, main cylinder, and cone) and performance parameters (collection efficiency and pressure drop) are studied. Lagrangian-Eulerian Frame is applied, and Large Eddy Simulation (LES) is used for turbule ...
DOI:
10.1016/j.powtec.2021.05.055

10. Effect of vortex limiter position and metal rod insertion on the flow field, heat rate, and performance of cyclone separator

Author:
Eflita Yohana; Mohammad Tauviqirrahman; Bachtiar Yusuf; Kwang-Hwan Choi; Vita Paramita
Source:
Powder technology 2021 v.377 pp. 464-475
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; flow; heat transfer; models; particles; separation; technology;     Show all 7 Subjects
Abstract:
... A cyclone is widely used in the industrial world for the particle separation process. Many geometrical and operational parameters affect the cyclone separator performance. The main aim of the present study is to investigate the effect of the position of the vortex limiter and the insertion of the metal rod on the heat transfer, flow field, and cyclone performance using the computational fluid dyna ...
DOI:
10.1016/j.powtec.2020.09.014

11. Analysis of the novel hybrid cyclone separators using large-eddy simulation

Author:
Ravi Shastri; Marek Wasilewski; Lakhbir Singh Brar
Source:
Powder technology 2021 v.394 pp. 951-969
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; fields; geometry; hybrids; mathematical models; powders; technology;     Show all 7 Subjects
Abstract:
... In this study, we propose novel hybrid square-circular cyclone variants that take advantage of both square and circular cyclones. A total of five cyclone models are analyzed – a square cyclone (baseline model), two cyclone separators having a cylindrical segment over the top with the square section in the remaining part, and the two cyclone models having square segment over the top with a cylindri ...
DOI:
10.1016/j.powtec.2021.09.033

12. Innovation of vortex finder geometry (tapered in-cylinder out) and additional cooling of body cyclone on velocity flow field, performance, and heat transfer of cyclone separator

Author:
Eflita Yohana; Mohammad Tauviqirrahman; Dimaz Aji Laksono; Henry Charles; Kwang-Hwan Choi; Mohamad Endy Yulianto
Source:
Powder technology 2022 v.399 pp. 117235
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; cooling; geometry; heat transfer; technology; temperature; turbulent flow;     Show all 7 Subjects
Abstract:
... This paper studies numerical analysis about the effect of the vortex finder (Tapered in-Cylinder out) geometric innovation in a cyclone separator. Four variations of the length of the vortex finder 0.5 Dc, 0.75 Dc, Dc, and 1.25 Dc will be simulated under cooling and without cooling conditions on the velocity flow field, cyclone performance, temperature distribution, and heat transfer. The RSM turb ...
DOI:
10.1016/j.powtec.2022.117235

13. Multi-objective optimization of a novel vortex finder for performance improvement of cyclone separator

Author:
Ming Guo; Dang Khoi Le; Xun Sun; Joon Yong Yoon
Source:
Powder technology 2022 v.410 pp. 117856
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; algorithms; dust; fluid mechanics; geometry; industry; models; response surface methodology; technology;     Show all 9 Subjects
Abstract:
... This study proposed a multi-objective optimization of novel vortex finder, called Slotted Vortex Finder (SVF), applied in the Stairmand cyclone separator, to obtain a most appropriate geometric configuration for performance improvement as the Stairmand cyclone separator had been widely used in industry for dust removal since last century. The Optimal Latin Hypercube Sampling (OLHS) method was util ...
DOI:
10.1016/j.powtec.2022.117856

14. Investigation of the pressure drop increase in a square free-vortex cyclonic separator operating at low particle concentration

Author:
Jairo Haake; Tommaso Oggian; Jonathan Utzig; Leonardo M. Rosa; Henry F. Meier
Source:
Powder technology 2020 v.374 pp. 95-105
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; geometry; technology;     Show all 3 Subjects
Abstract:
... This paper reports experimental and numerical results obtained in a free-vortex gas-solid separator, in which the classic conical-section of the device is replaced by a larger square chamber, where the vortex is free to evolve. An adjustable vortex-limiting plate is introduced at the cross-section in order to allow the inversion of the coherent structure and guarantee a natural vortex length of th ...
DOI:
10.1016/j.powtec.2020.07.008

15. Effects of different inlet structures on the flow field of cyclone separators

Author:
Zhuwei Gao; Juan Wang; Zhongxin Liu; Yaodong Wei; Jiangyun Wang; Yu Mao
Source:
Powder technology 2020 v.372 pp. 519-531
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; fluid mechanics; models;     Show all 3 Subjects
Abstract:
... In this reported study, a new Q criterion was proposed to analyze the vortex in three cyclones that had various inlet structures. The Reynolds stress model (RSM) was used to simulate the gas flow, and the Phase Doppler Particle Analyzer (PDPA) was used to measure the fluid velocity. The results showed that the vortex structure was intuitive according to the new isovortex surface that was obtained ...
DOI:
10.1016/j.powtec.2020.06.014

16. Combining 10 meta-heuristic algorithms, CFD, DOE, MGGP and PROMETHEE II for optimizing Stairmand cyclone separator

Author:
Ahad Izadi; Elham Kashani; Ali Mohebbi
Source:
Powder technology 2021 v.382 pp. 70-84
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; algorithms; cylinders; design; diameter; dimensions; experimental design; fluid mechanics; height; industry; length; models; pressure; technology; width;     Show all 15 Subjects
Abstract:
... Gas cyclone separators have been widely used in different industries. In this study, to find the best geometrical ratios of Stairmand cyclone separator, computational fluid dynamics (CFD), design of experiments (DOE), multi-gene genetic programming (MGGP), and ten meta-heuristic algorithms were combined. Six geometrical dimensions of the gas cyclone separator including inlet height and width, vort ...
DOI:
10.1016/j.powtec.2020.12.056

17. Experimental investigation for R&D in sediment laden pico hydraulic francis turbine

Author:
Atmaram Kayastha; Biraj Singh Thapa; Bhola Thapa; Young Ho Lee
Source:
Renewable energy 2020 v.155 pp. 889-898
ISSN:
0960-1481
Subject:
cyclone separators,   etc   ; models; sediments; water power;     Show all 4 Subjects
Abstract:
... The researches previously accomplished have been focused on design analysis, performance comparison and improvement of hydrocyclones for general applications and comprehensive results have been achieved. For the present research, an open loop experiment setup has been developed to study the feasibility of hydrocyclone separator as a pre-filtering device for sediment laden hydraulic turbine. The ex ...
DOI:
10.1016/j.renene.2020.03.116

18. Performance evaluation of a tangential cyclone separator with additional inlets on the cone section

Author:
Jun-Hyung Lim; Su-In Park; Heun-Jae Lee; Muhammad Zeeshan Zahir; Se-Jin Yook
Source:
Powder technology 2020 v.359 pp. 118-125
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; aerosols; air; cost effectiveness; powders;     Show all 5 Subjects
Abstract:
... This study installed additional inlets on the cone section of a tangential cyclone separator and examined its effect on collection efficiency and pressure drop. When aerosol was injected through the additional inlets and clean air was injected into the original inlet, the cut-off size of particles decreased, compared to that when injecting aerosol through the original inlet. However, it was reveal ...
DOI:
10.1016/j.powtec.2019.09.056

19. High-volume sampler for size-selective sampling of bioaerosols including viruses

Author:
Jun-Hyung Lim; Sang Hwan Nam; Jongwoo Kim; Nam Hoon Kim; Gun-Soo Park; Jin-Soo Maeng; Se-Jin Yook
Source:
Atmospheric environment 2021 v.265 pp. 118720
ISSN:
1352-2310
Subject:
cyclone separators,   etc   ; Severe acute respiratory syndrome coronavirus 2; air; air flow; bioaerosols; dust; environment; polymerase chain reaction; sodium phosphate; Arizona;     Show all 10 Subjects
Abstract:
... Owing to the recent global spread of the new coronavirus SARS-CoV-2, the development of technology to effectively detect viruses in crowded public places is urgently needed. In this study, a three-stage high-volume bioaerosol sampler was developed for the size-selective sampling of bioaerosols through the suction of air at a high flow rate of 1000 L/min. In stage 1, an omnidirectional inlet cyclon ...
DOI:
10.1016/j.atmosenv.2021.118720

20. Experimental and numerical investigation in the series arrangement square cyclone separator

Author:
S. Venkatesh; S.P. Sivapirakasam; M. Sakthivel; S. Ganeshkumar; M. Mahendhira Prabhu; M. Naveenkumar
Source:
Powder technology 2021 v.383 pp. 93-103
ISSN:
0032-5910
Subject:
cyclone separators,   etc   ; magnesium; mathematical models; particle size; technology;     Show all 5 Subjects
Abstract:
... The square cyclone separators are widely utilized in CFB boilers to isolate tiny specks from gas flow. In present investigation, three square cyclones are fabricated, after that which is linked in series manner. The average mean particle size of 2.2 μm (magnesium particles) is utilized in experimental analysis. The estimated collection efficacy of this series arrangement cyclone is 61% at the part ...
DOI:
10.1016/j.powtec.2021.01.031