Each particulate wet scrubber vessel is part of a large, and sometimes complex, wet
scrubbing system. For example, Figure 7 illustrates a venturi scrubber in a scrubbing
system. The evaporative cooler, located before the venturi scrubber in the system, cools
the gas stream, which serves the following purpose:
1. It protects the construction materials of the venturi throat.
2. It helps to homogeneously and heterogeneously nucleate vapor phase material
emitted from the process before it reaches the scrubbing system.
3. It prevents the water droplets from evaporating and inhibiting inertial impaction.