Effect of operation parameters of wet dust collector
摘要
The operation parameters of throttle-type self-excitation dust controller were studied through the measurement of throttle liquid-level difference Δh,total pressure loss R and collection efficiency η on different initial liquid levels b0 and different gas velocities v.The results show that the throttle liquid-level difference protects gas-phase resistance from its increase.The change between Δh and v shows the linear and conic relationship on deferent b0value,and it is the same as the change between R and v.Throttle liquid-level difference plays the same important role in collection efficiency as gas velocity,because of its change of flow direction increasing the inertial impaction probability.Collection efficiency η increases with the fall of b0 value.Meanwhile,the η value increases with gas velocity with the same b0 value.The dust collector resonance occurs excited by unbalance inertia force of impeller revolving of fan.Under the influence of resonance frequency,pressure loss and collection efficiency the appropriate operating condition of dust controller is that the b0 value is between 0 and 34 mm,and the gas velocity is between 9.22 and 13.68 m/s.In this case,the collection efficiency reaches 98.6% and the total pressure drops 430 705 Pa.