Performance estimation of a Venturi scrubber using a computational model for capturing dust particles with liquid...

Area of Science:

• Fluid Dynamics
• Particle Technology
• Chemical Engineering

Background:

• Venturi scrubbers are vital for gas-liquid-solid phase separation.
• Phase interactions, including liquid atomization, significantly impact Venturi scrubber performance.

Purpose of the Study:

• To develop and validate a computational model for interactive three-phase flow in Venturi scrubbers.
• To estimate pressure drop and collection efficiency using a novel numerical approach.

Main Methods:

• Employed the Eulerian-Lagrangian method for numerical simulation.
• Solved gas flow via Eulerian approach (Navier-Stokes equations).
• Modeled dust and liquid droplet motion using the Lagrangian approach (Basset-Boussinesq-Oseen equation).

Main Results:

• The model incorporates gas-droplet interactions, liquid jet atomization, droplet deformation, breakup, collision, and dust capture.
• Numerical simulations of a Pease-Anthony Venturi scrubber were performed.
• Results showed good agreement with experimental data for pressure drop and collection efficiency.

Conclusions:

• The developed computational model effectively simulates three-phase flow in Venturi scrubbers.
• The model provides accurate predictions for pressure drop and collection efficiency.
• This work offers a valuable tool for Venturi scrubber design and performance optimization.