绿色矿冶

Taking the outlet fluid of two flue gas fans in a smelter as the resear ch object, a 3D offgas flow model was built and finite element simulation was used to determine the offgas hydraulics under various working conditions of the fans. The reliability of the 3D model was then verified against actual fan operation, and optimal fan control strategies and methods for two process routes were developed. According to the simulation results, when the two fans operate in series, the inducing effect of the fans at full workload differ widely. When the fans operate in parallel, remarkable inducing effect can be achieved when one operates at full load while the other flow is controlled at 222000m³/h. Further increasing the load however will reduce the total induction performance.