Enhancement of hydrocyclone separation performance by eliminating the air core

Chu, Liang‐Yin; Yu, Wenwen; Wang, Guangjin; Xiantao, Zhou; Chen, Wen‐Mei; Dai, Guangqing

doi:10.1016/j.cep.2004.01.002

Cited by 56 publications

(27 citation statements)

References 15 publications

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“…Chu et al (2002) designed a hydrocyclone with a winged core to control the turbulence structure characteristics, which resulted in a lower energy loss coefficient, higher reduced separation efficiency, higher separation sharpness and larger capacity. Subsequently, Chu et al (2004) reported a new hydrocyclone design with a solid core fixed along the central axis, which effectively eliminated the air core. The experimental results obtained with this new design showed that the separation efficiency was improved.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational studies of multiphase hydrodynamics in a hydrocyclone separator system

Lim

Chen

Wang

et al. 2010

Chemical Engineering Science

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Section: Introductionmentioning

confidence: 99%

Experimental and computational studies of multiphase hydrodynamics in a hydrocyclone separator system

Lim

Chen

Wang

et al. 2010

Chemical Engineering Science

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“…Hydrocyclones are getting more and more interest from various industries, because of their advantages such as design and operational simplicity, high capacity (volumetric flow rate), low maintenance and operating costs, and small space of equipment (Chu et al, 2004). Despite the advantage of the conventional hydrocyclones, this device has undergone many modifications to enable it to meet specific process requirements (Souza et al, 2000;Vieira et al, 2005Vieira et al, , 2007Oliveira et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Performance of hydrocyclones with different geometries

et al. 2011

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Hydrocyclones belong to an important group of equipments designed to solid-liquid or liquid-liquid separation in a centrifugal field. It is possible to adapt a hydrocyclone to the accomplishment of several industrial activities depending on the geometrical relations among its main dimensions. The operation and design of these devices are relatively simple; however, the flow inside them is very complex and its prediction is very difficult. For that reason, most models that are used to predict hydrocyclone performance are empirical ones. The objective of this work was to study the influence of geometric variables in the performance of hydrocyclones, using CFD and response surface techniques. The obtained results show that it was possible to find an optimum hydrocyclone design, that is, geometric relationships that lead to Euler number and cut size in minimum levels.Les hdrocyclones appartiennentà un groupe important d'équipements conçus pour la séparation solide-liquide ou liquide-liquide dans un champ centrifuge. Il est possible d'adapter un hydrocycloneà la réalisation de plusieurs activités industrielles selon les relations géométriques dans ses dimensions principales. Le fonctionnement et la conception de ces dispositifs sont relativement simples; cependant, leur circulation interne est très complexe et sa prédiction est très difficile. Pour cette raison, la plupart des modèles utilisés pour prédire le rendement des hydrocyclones sont des modèles empiriques. L'objectif de ce travailétait d'étudier l'influence des variables géométriques sur le rendement des hydrocyclones en utilisant une DFN et des techniques de surface de réponse. Les résultats obtenus indiquent qu'ilétait possible de trouver une conception d'hydrocyclones optimale, c.-à-d. les relations géométriques qui mènent au nombre d'Euler età la mesure fixeà des niveaux minimaux.

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“…Subgrid scale modelling of interface deformation due to turbulence is still an open issue and although both options might be selected simultaneously in commercial CFD softwares there is no validation of such a use on benchmark two-phase flows. Due to the inherent limitation of coupling between turbulent models and multiphase models, many studies have already been reported on hydrocyclone flow field and performance evaluation through CFD modelling approach without simulating the air core features (Gupta et al, 2008;Zhen-Bo et al, 2011;Karimi et al, 2012;Zhu et al, 2012;Murthy and Bhaskar, 2012;Davailles et al, 2012;Hwang et al, 2013;Swain and Mohanty, 2013;Banerjee et al, 2015), while some authors quantified the hydrocyclone flow field from another viewpoint by considering air core as a hollow tube (Chu et al, 2004;Sripriya et al, 2007;Evans et al, 2008). From their results, no discrepancy is observed between the predicted velocity profile and experimental observation reported in existing literature.…”

Section: Governing Equationsmentioning

confidence: 72%

Mechanistic modelling of water partitioning behaviour in hydrocyclone

Banerjee

Climent

Majumder

2016

Chemical Engineering Science

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 18144 a b s t r a c tA new mechanistic model on water split behaviour in a hydrocyclone has been developed based on the convoluted hydrodynamics of swirling flows in a confined environment. A comprehensive study has been accomplished on the genesis and subsequent distribution of G force based on the characterization of internal flow features of a 2 in hydrocyclone through computational fluid dynamics (CFD) approach. The difference between the magnitude of G force in cylindrical and spigot regions is taken into account as a new hydrodynamic parameter to compute the water split behaviour. Specifically, our analysis reveals a semi-empirical relationship between the water split with G force difference (Δ ) G , the vortex finder diameter (D vf ) and the spigot diameter (D sp ). The developed model is validated against experimental data and show good prediction accuracy. Unique aspect of the developed empirical model is that the underlying mechanism of incipient flow peculiarity is implicitly accounted to rummage the separation characteristics in a quantifiable manner. In addition to rationalize the flow split behaviour of hydrocyclones, this new hydrodynamic indicator seems promising to be used as a scale-up parameter in envisaging the separation performance for a given application.

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Enhancement of hydrocyclone separation performance by eliminating the air core

Cited by 56 publications

References 15 publications

Experimental and computational studies of multiphase hydrodynamics in a hydrocyclone separator system

Experimental and computational studies of multiphase hydrodynamics in a hydrocyclone separator system

Performance of hydrocyclones with different geometries

Mechanistic modelling of water partitioning behaviour in hydrocyclone

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