A number of factors affect particle capture in a scrubber. One of the most important for many scrubber types is pressure drop, which is the difference in pressure between the scrubbing process inlet and outlet. Static pressure drop of a system is dependent on the system’s mechanical design, as well as on the required collection efficiency: the sum of the energy required to accelerate and move the gas stream and the frictional losses as the gases move through the scrubbing system(UESPA-84/03, p. 9-17).
The following factors affect the pressure drop in a scrubber:
• Scrubber design and geometry
• Gas velocity
• Liquid-to-gas ratio