Flow Characteristic in a Single Inlet Cyclone Separator With Double Passage

The turbulence flow in a single inlet cyclone separator with double passage was studied by combing numerical simulation and experiment investigation.The calculated pressure drop in the cyclone separator was consistent with the experimental data,which verified the adopted models and calculating methods.Comparing with the common single inlet cyclone at the same process load,the pressure drop of the cyclone separator could be decreased by 40% with the collection efficiency of the single inlet cyclone separator with double passage not being reduced.Moreover,special double passages could eliminate the phenomenon of the vortex core oscillation induced by the noncoincidence of the swirl flow center and the geometry center in common cyclone separator,so as to improve the collection efficiency.The cyclone separator with double passage could decrease the pressure drop and energy consumption in the FCC disengage cyclone separator system.And the axisymmetric flow fields conduced to reduce the coke generation on the outer wall of the outlet pipe in the cyclone separator.