Hydrodynamic study and particulate matter removal in a self priming venturi scrubber

Abstract

Fly ash is the fine particulate matter identified as environmental pollutant emitted from thermal power station. Self priming venturi scrubber is now-a-days getting importance for its high performance efficiency in case of nuclear power plant accident. Therefore, the present paper focuses on the control of fly ash particulate matter from the air using self priming venturi scrubber in both the condition, submerged and non submerged. Detailed investigation on the pressure drop inside the venturi scrubber and scrubbing of particulate matter has been discussed in the present study. It has been found from the experiment that the maximum pressure drop is observed at highest throat gas velocity of 72 m/s, water level height of 0.77 m. Maximum removal efficiency of fly ash, 99.89% is obtained at throat gas velocity of 60 m/s, water level height of 0.77 m with fly ash inlet concentration of 0.3 x10 −3 kg/Nm 3 in submerged condition. Furthermore, empirical model has been developed to validate the experimental results of pressure drop and removal efficiency and compared with the existing mathematical model. • Separation of particle in self priming venturi scrubber using water has been done. • Hydrodynamics study is also investigated in terms of pressure drop. • Experiments carried out in both conditions-submerged and non-submerged. • Maximum fly ash removal efficiency is obtained as 99.89% in submerged condition. • Efficiency is a function of gas velocity, fly ash concentration and water level.