CFD simulation of dust particle removal efficiency of a venturi scrubber in CFX

This research presents the computational fluid dynamics (CFD) simulation of dust particle removal efficiency of a venturi scrubber in ANSYS CFX. Venturi scrubber effectively encapsulates the dust particles from contaminated gas in petite droplets formed by disintegration of a liquid due to high kinetic energy of gas flowing into it. Eulerian–Lagrangian method is employed in ANSYS CFX to investigate the dust removal efficiency of a venturi scrubber for gas flow rate at 0.09, 0.115, and 0.14 kg s−1 and liquid flow rate at 0.1, 0.13 and 0.16 kg s−1. The hydrophobic dust particle titanium dioxide (TiO2) of diameter 1 μm having density 4.23 g cm−3 is used in the simulation and experimentation. Throat gas velocity, volume fraction, droplet size and removal efficiency are investigated to analyze the performance of venturi scrubber. Cascade atomization and breakup model (CAB) is used to predict the breakup of liquid in the venturi scrubber. The simulation results are verified from the experimental results of gas velocity at throat and dust removal efficiency. The simulation result predicts good with experimental results.

► Simulation of dust particle removal efficiency in venturi scrubber in ANSYS CFX.
► Mesh model prepared in ANSYS ICEM.
► Eulerian–Lagrangian approach for multiphase flow.
► Investigation of dust removal efficiency at different gas and liquid flow rate.
► Validation of simulation against throat gas velocity and dust removal efficiency.