Increasing in Efficiency of a Hydrocyclone Model

The objective of this research is to improve the performance and efficiency of the hydrocyclones by testing four different cylindrical parts with applying vertical and horizontal rods. These parts were; short simple cylinder, long simple cylinder, hyperbolic type cylinder and parabolic type cylinder. Laboratory observations showed that in cases without a rod, a large diameter air core forms and causes some decrease in efficiency in particle sizes less than forty microns. Adding a horizontal rod in conical part leads to decrease in air core diameter, but increases instability in air core. In some cases, air core was eliminated by adding the vertical rod. Results show that adding horizontal and vertical rods increase the efficiency and flow split, and decrease cut size. In order to total efficiency, the parabolic cylinder had the best efficiency, and then long simple cylinder, short simple cylinder and the last was hyperbolic cylinder. In all experiments, the best case was observed by parabolic cylinder with horizontal and vertical rods, and worst case was the hyperbolic cylinder without any rod.