Experimental study of the effect of output pipe diameter and flow speeds on clone performance in cylon separations

Cyclone separators are fixed-part devices used in the process of separating solid particles from the gas in the stream by creating vortices with a gas stream containing solid particles. Cyclones are used in industrial areas such as iron and steel, cement, construction. In this study, three different immersion pipe diameters, four different flow rates and two different samples were used to study the pressure loss and dust retention efficiency affecting the cyclone performance in the cyclone designed according to the high-efficiency Stairmand model. Experiments were carried out by placing a subduction pipe diameter of 88.9 mm, 114.3 mm and 139.7 mm respectively in the manufactured cyclone separator. Using biomass and coal samples, pressure drop, and dust retention efficiency were calculated at four different flow rates (450 m³/h, 374.85 m³/h, 299.7 m³/h and 255 m³/h) in diameter of each plunge pipe, respectively. The parameters that most affect performance in cyclone separators are dust collection efficiency and pressure loss. The dust retention efficiency is calculated as the ratio of the weight of the dust entering the cyclone to the weight of the dust accumulated in the dust collection chamber at the end of the experiment. At the inlet and outlet parts of the cyclone, temperature measurement was carried out with a thermocouple and pressure measurement was carried out with a digital pressure measuring device. In Solidworks Flow Simulation, flow analysis was performed and compared with experimental work. For biomass and coal samples, analyzes were made for particles passing through five different screens and fractional efficiencies were examined by particle analysis in the Mastersizer 3000 model device. Accordingly, according to the flow analysis and experimental work done in the SolidWorks program, the pressure drop decreased as the plunge pipe diameter increased. The best result in dust retention efficiency in coal sample was achieved with a flow rate of 374.85 m³/h and a plunge pipe diameter of 114.3 mm. In the biomass sample, the best dust holding efficiency was achieved with a plunge pipe diameter of 88.9 mm at a flow rate of 374.85 m³/h. When comparing between biomass and coal sample, it was observed that the dust retention efficiency of the coal sample was better.