NUMERICAL PREDICTION OF SHORT-CUT FLOWS IN GAS-SOLID REVERSE FLOW CYCLONE SEPARATORS


Sakin A., KARAGÖZ İ.

CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY, vol.23, no.4, pp.483-493, 2017 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 4
  • Publication Date: 2017
  • Doi Number: 10.2298/ciceq161009002s
  • Journal Name: CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.483-493
  • Keywords: CFD, cut-off diameter, pressure drop, separation efficiency, swirl flow, TANGENTIAL INLET CYCLONE, COLLECTION EFFICIENCY, PRESSURE-DROP, SAMPLING CYCLONES, PERFORMANCE, CFD, VELOCITY, HYDRODYNAMICS, SIMULATIONS, DIMENSIONS

Abstract

The effect of operational and geometrical parameters on the short-cut flow in cyclone separators has been investigated computationally using the Reynolds stress model (RSM). The motion of solid particles in the flow field was simulated using the Eulerian-Lagrangian approach with one way discrete phase method (DPM). Eleven cyclones with different cone tip diameters, vortex finder lengths and diameters were studied and the simulation results were analyzed in terms of velocity fields, pressure drops, cut-off diameters and short-cut flows. The numerical simulation was verified with the published experimental results. The results obtained demonstrate that all three parameters, particularly, vortex finder diameter, have significant effects on the cut-off diameter (collection efficiency), the short-cut flow and the pressure drop.