An a priori mathematical model of venturi scrubber performance is developed and compared with experimental data on pressure drop and particle collection. It comprises simultaneous differential equations of drop motion, momentum exchange, and particle impaction on drops. These are readily integrated by computer for the whole venturi, given its configuration and operating conditions. Provided liquor distribution is reasonably uniform, pressure drop prediction is quite good for a wide variety of venturi sizes and shapes. Accuracy of prediction of particle collection is only fair. Discrepancies are thought to be due to either maldistribution of spray liquor or condensation of water vapor. Thus, provided these conditions are avoided, the model can be used to optimize design and operating conditions for specific applications.
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