Effects of Inlet and Outlet Heights on Clean Pressure Drop in a Cyclone

Karadeniz A., Ayvaz C., Ulutaş K., Demir S.

1st International Conference on Environment, Technology, and Management, Niğde, Turkey, 27 June - 29 July 2019, pp.1

  • Publication Type: Conference Paper / Full Text
  • City: Niğde
  • Country: Turkey
  • Page Numbers: pp.1
  • Yıldız Technical University Affiliated: Yes


Particulate matter (PM) is the most spread pollutants in the air and it is one of the six criteria air pollutants. So it is very important to remove them from exhaust gases before prior to emission. Cyclone separators are mostly used as an alternative method to remove PM from the exhaust gases. They can be the main treatment system or appropriate to use as preliminary equipment as needed. There is a most important parameter for a cyclone, named as pressure drop. This parameter directly effects PM collection efficiency and maintenance costs. So, this study focused on pressure drop parameter.

The geometry of cyclone separator is one the most important parameter that has effect on pressure drop. Especially, the inlet and outlet parts are the areas where the pressure drops occurs most. In present study, the effects of inlet height and outlet pipe length on pressure drop were investigated. The increasing particle concentration in the waste gas has a decreasing effect on the pressure drop. Therefore, the studies were carried out with clean pressure  drop. The research was performed in Yıldız Technical University, Environmental Engineering Laboratory. Experiments were conducted in five flowrates to see effects of different flowrates.

As a result of the experiments, it was determined that, independently of geometry, pressure drop increased with increasing gas flowrate. The rising trend is similar for all geometries. The inlet height is a factor that determines the gas inlet velocity. Therefore, it has a clear effect on the pressure drop in the cyclone. The effect of the outlet pipe length was found to be quite weak compared to the inlet height.