A method of estimating aerosol particle removal rates using one-dimensional two-fluid equations for venturi scrubbers in filtered containment venting

摘要

One-dimensional two-fluid mass, momentum, and energy conservation equations for gas and liquid droplet and the particle removal rate are formulated to estimate aerosol particle removal rates of venturi scrubbers used in filtered containment venting systems. Compared with existing one-dimensional models, present method enables describing actual two-phase interactions by calculating the local gas and droplet velocities hence local droplet diameters as well as the other physical properties. The results show that the particles are mostly removed at the entrance region of the throat where droplets are introduced and thus the two-phase velocity difference is the largest. This coincides well with previous experimental studies. The present model predicts the existing experimental data considered here better than the previous one- or two-dimensional models. Especially, in the conditions of low liquid-to-gas flow ratio, the predictions of the present model are very close to the experimental data. (C) 2020 Elsevier Ltd. All rights reserved.