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220 Lawrence K. Wang et al.

Table 8
Pressure Drops for Typical Venturi Scrubber Application
Application Pressure drop (in. H O)
2
Boilers
Pulverized coal 15–40
Stoker coal 10–12
Bark 6–10
Combination 10–16
Recovery 30–40
Incinerators
Sewage sludge 18–20
Liquid waste 50–55
Solid waste
Municipal 10–20
Pathological 10–20
Hospital 10–20
Kilns
Lime 15–25
Soda ash 20–40
Potassium chloride 30
Coal processing
Dryers 25
Crushers 6–20
Dryers
General spray 20–60
Food spray 20–30
Fluid bed 20–30
mining
Crushers 6–20
Screens 6–20
Transfer points 6–20
Iron and steel
Cupolas 30–50
Arc furnaces 30–50
BOFs 4–60
Sand systems 10
Coke ovens 10
Blast furnaces 2–30
Open hearths 20–30
Nonferrous metals
Zinc smelters 20–50
Copper and brass 20–50
smelters
Sinter operations 20
Aluminum reduction 60
Phosphorous
Phosphoric acid
Wet process 10–30
Furnace grade 40–80
Continued