Experimental Study of the Influence of Vortex Finder Geometry on Hydrocyclones Performance

Silva, D.O.; Façanha, J.M.F.; Vieira, Luiz Gustavo Martins; Barrozo, M. A. S.

doi:10.4028/www.scientific.net/msf.727-728.1848

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…The vortex finder and underflow dimensions are also important geometric parameters, and the best values for these variables depend on the role of the equipment (particle classification or thickening) − and feed solid concentration. , In addition, some authors have also reported studies on the shape of vortex finder, as it has a significant role in preventing short-circuit and particle misplacing. − …”

Section: Introductionmentioning

confidence: 99%

Design of an Optimized Hydrocyclone for High Efficiency and Low Energy Consumption

Gonçalves

Kyriakidis

Ullmann

et al. 2020

Ind. Eng. Chem. Res.

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Hydrocyclones are centrifugal devices used to perform the separation of a discrete phase (solid or liquid) from a continuous one. Depending on the process goal, particle classification, or thickening, it is possible to enhance the performance of these devices by optimizing their geometric relationships. In this study, innovative geometric relationships for a hydrocyclone were proposed to maximize the separation efficiency and provide low energy consumption. A database composed of 60 hydrocyclones with different geometric dimensions designed over 17 years of research at our laboratory was used to perform this study. Regression equations were adjusted to these previous experimental data, and a differential evolution algorithm was used in the optimization study. The optimized geometry of the hydrocyclone obtained in this work, named MOEH (maximum overall efficiency hydrocyclone), was built, and its performance was compared with the best equipment of the database through numerical simulation and experiments. The results indicated that for fine particles (D 63.2 = 10.80 μm), the MOEH showed better performance than all devices already analyzed by our research group, with an overall efficiency of approximately 9% higher and a 33% reduction of energy consumption when compared with the best hydrocyclone of the database.

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Section: Introductionmentioning

confidence: 99%

Design of an Optimized Hydrocyclone for High Efficiency and Low Energy Consumption

Gonçalves

Kyriakidis

Ullmann

et al. 2020

Ind. Eng. Chem. Res.

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show abstract

“…Nevertheless, on the one hand due to the inherent disadvantages (like fish-hook effect or unsatisfactory efficiency [6,7]), on the other hand owing to the new trendies (like the reducing processed particle size [8,9]), the hydrocyclone performance is partly weak, even the device cannot be adopted in some industrial process cases. Therefore, the device performance is tried to be improved by the structural modifications, such as (1) introducing new structures like filtering hydrocyclone [10,11], JK three-product cyclone [12], and two-inlet hydrocyclones [13,14], and (2) changing original structures including the feed pipe [15], the cylindrical section [16], the vortex finder [17], and the conical vessel [16], among others.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Prediction of Influencing Parameters on the Coal Classification Performance of a Novel Three Products Hydrocyclone Screen (TPHS) Based on Grey System Theory

et al. 2020

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A novel hydrocyclone including a cylindrical screen embedded in a conventional hydrocyclone (CH), named three products hydrocyclone screen (TPHS), has been successfully designed. In TPHS, the combination of centrifugal classification and screening was employed to separate particles. In this paper, Grey theory, as an effective means to the laws of both complex and uncertainty system’s behavior with small samples, was used to investigate the operational (feed concentration and feed pressure) and structural (aperture size, spigot diameter, and vortex finder diameter) parameters on performance evaluation Hancock classification efficiency (HE), imperfection (I), and cut size (d50c). The experiments of coal sample (0–1 mm) show that TPHS with coarser particles in underflow exhibited the absent “fish-hook”. The closeness calculated using the Grey System algorithm indicates that the performance of TPHS was closely related to the operation and structure parameters. Further, the order of grey incidence degree between different parameters and HE (or I or d50c) is the spigot diameter and aperture size with the highest value, the feed pressure and vortex finder diameter with the middle value, and the feed concentration with the lowest value. The prediction using the GM(1, N) algorithm implies that the dynamic prediction model for the performance evaluation can be created depending on the operation, structure and previous performance value. The mean relative errors between the predicted and actual HE, I, and d50 were 2.84%, 5.83%, and 3.57%, respectively, which exhibit the accurate prediction.

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“…Among these studies, there are changes in the hydrocyclone in order to meet the individual needs of each industrial process. These modifications can be done by creating non-conventional equipment, either by changing the hydrocyclone geometry, or by adding another unit operation in the process of hydrocycloning, or by any other change that is different from the hydrocyclone model initially proposed [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study of the Capacity in a Totally Permeable Hydrocyclone

Salvador

Silva

Barrozo

et al. 2014

MSF

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Hydrocyclones are equipments that separate a discrete phase (solid, liquid or gas) from a continuous phase (liquid) by generating a centrifugal field. The objective of this work was to study, experimentally, the incorporation effect of cylindrical and conical permeable walls (CyCoFH) on an optimized geometry hydrocyclone (H11) to evaluate the equipment’s processing capacity. By inserting a filtering cone and cylinder, during the operation of these separators, besides the traditionally observed streams (underflow and overflow), there is an additional liquid stream resulting from the filtering process in the conical and cylindrical regions. Despite the low filtrate flow observed during this new equipment’s operation, it was found that the filtration is benefic to hydrocycloning. According to the main results, the CyCoFH hydrocyclone of lower permeability presented a greater processing capacity. The feed flow rate was 23% higher than the corresponding conventional hydrocyclone, in the same geometrical and operational conditions.

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Experimental Study of the Influence of Vortex Finder Geometry on Hydrocyclones Performance

Cited by 7 publications

References 21 publications

Design of an Optimized Hydrocyclone for High Efficiency and Low Energy Consumption

Design of an Optimized Hydrocyclone for High Efficiency and Low Energy Consumption

Analysis and Prediction of Influencing Parameters on the Coal Classification Performance of a Novel Three Products Hydrocyclone Screen (TPHS) Based on Grey System Theory

Study of the Capacity in a Totally Permeable Hydrocyclone

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