Flow Behavior through Venturi Rod Banks in WFGD Spray Tower

Based on the observation and measurement in cold-modelling test, the flow behavior through Venturi rod banks in WFGD spray tower was studied numerically with Euler-Euler multiphase model. The characteristics of pressure drop and liquid holdup under operating conditions were simulated. The results show that resistance coefficient (λ) is proportional to Re_g^{-0. 58} and Re_l^{0. 65} and the liquid holdup (H) is proportional to Re_g^{0. 52} and Re_l^{1. 06}. Introducing rod banks is beneficial to the increase in liquid holdup and the decrease in V₁/V_g. The correlation for pressure drop and liquid holdup is instructive for engineering application.