Numerical study of the separation characteristics in a cyclone of different inlet particle concentrations

Hydrodynamic Simulation of Cyclone Separators

“…Their study of the effect of the inlet velocity on the pressure drop found that the RSM gave the closest agreement with the experimental results. The superiority of the RSM over other models has been established by Meier et al (1999), Xiang et al (2005), Qian et al (2006), Wan et al (2008) and Kaya et al (2009). These investigations of various characteristics of cyclone separator flow field, such as velocity profiles, pressure drop, effect of particle size, mass loading, separation efficiency, effect of pressure and temperature, have reemphasized the ability of the RSM for realistic prediction of the flow field inside cyclone separators.…”

“…In many situations, this information is not readily available. Due to these inherent drawbacks this approach has found limited application in cyclone separator simulation (See for example, Meier et al 1998 andQian et al 2006). In the Eulerian-Lagrangian approach, particle trajectories are obtained by integrating the equation of motion for individual particles, whereas, the gas flow is modelled using the Navier-Stokes equation.…”

“…In the following subsections we look at how these affect the collection efficiencies. Qian et al (2006) investigated the effect of mass loading on the collection efficiency. The results of their simulation are shown in figure 10.…”

“…10. Separation efficiency simulation result for various inlet particle concentration with constant inlet velocity (Adapted from Qian et al, 2006) Mass loading effect is usually coupled with the particle diameter. At lower mass loadings, the smaller particles (< 10μm) tend to be dispersed and hauled by the gas flow and escape from the vortex finder at the top of the cyclone separator (Derksen 2003 andWan et al 2008).…”

Influence of flue gas conditioning on fly ash characteristics

“…To achieve this, several pollution control devices such as cyclone separators, bag filters and electrostatic precipitators, ESPs, are being employed. Though, cyclone separators [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] and bag filters [3,8,10,[18][19][20][21][22][23] are employed to remove the particulate matter from the flue gas, these techniques have their own limitations. On the other hand, ESPs are most popularly used at thermal power stations [2][3][4]10,20,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] to reduce SPM levels.…”