engleski

Towards efficient simulation of off-gas scrubbing by a hybrid Eulerian–Lagrangian model

In a wet scrubber water is introduced into dust laden off-gas in order to capture the fine dust particles. The scrubbing process comprises a whole set of phenomena like droplet break-up, coalescence, liquid wall film and dust capturing. We introduce a comprehensive simulation model is where representative droplets are traced in a Lagrangian manner while the dust is treated as passive Eulerian phases. The wall film is considered by a model solving the shallow water equations, including models for droplet deposition, film separation and film stripping. Numerical results for pressure drop and capturing efficiency are in good agreement with measurements.

wet scrubbers; off-gas scrubbing; Euler–Lagrange model; wall film models; dust capturing; entrainment; separation; droplet break-up; coalescence; liquid wall film; modelling; simulation; droplet deposition; film separation; film stripping; pressure drop; Venturi scrubbers; CFD; computational fluid dynamics

nije evidentirano