In the world of industrial air pollution control, the wet scrubber remains the workhorse for removing particulate matter and acid gases. However, when an engineer types "scrubber design calculation excel hot" into a search engine, they are not looking for generic textbook formulas. They need solutions for high-temperature gas streams—where adiabatic saturation, water evaporation, and thermal shock risk dominate the design process.
Q_sensible = Q_latent
ΔP_hot = ΔP_ambient * (ρ_hot / ρ_ambient) scrubber design calculation excel hot
L/G_cool = (Q_sensible) / (Cp_water * Delta_T_water * 8.34)
For a typical hot application (Inlet: 600°F, Outlet: 160°F): Factor = (620) / (1060) = Pro Tip for Excel: Create a dynamic named range that pulls T_out from your adiabatic solver. Your velocity (V = Q_actual / Cross-sectional area) must use the average of Q_inlet and Q_outlet for accurate pressure drop calculations. Module 3: Required Liquid-to-Gas Ratio (L/G) For hot acidic gases (HCl, SO2), the L/G ratio is driven by two factors: cooling duty and absorption. In the world of industrial air pollution control,
Q_actual = Q_inlet * (T_out + 460) / (T_in + 460) * (P_in / P_out)
Because the gas is hot, the water temperature will rise significantly. A common mistake is assuming the water temperature is constant. In your Excel sheet, add a heat balance on the water loop to compute the outlet water temperature. If the water exceeds 140°F, you risk scaling and reduced gas absorption. Standard pressure drop correlations (e.g., Calvert or Semrau) were developed for ambient air. Hot gas has lower density and higher viscosity. Q_sensible = Q_latent ΔP_hot = ΔP_ambient * (ρ_hot
M_gas * Cp_gas * (T_in - T_out) = M_evap * h_fg
In the world of industrial air pollution control, the wet scrubber remains the workhorse for removing particulate matter and acid gases. However, when an engineer types "scrubber design calculation excel hot" into a search engine, they are not looking for generic textbook formulas. They need solutions for high-temperature gas streams—where adiabatic saturation, water evaporation, and thermal shock risk dominate the design process.
Q_sensible = Q_latent
ΔP_hot = ΔP_ambient * (ρ_hot / ρ_ambient)
L/G_cool = (Q_sensible) / (Cp_water * Delta_T_water * 8.34)
For a typical hot application (Inlet: 600°F, Outlet: 160°F): Factor = (620) / (1060) = Pro Tip for Excel: Create a dynamic named range that pulls T_out from your adiabatic solver. Your velocity (V = Q_actual / Cross-sectional area) must use the average of Q_inlet and Q_outlet for accurate pressure drop calculations. Module 3: Required Liquid-to-Gas Ratio (L/G) For hot acidic gases (HCl, SO2), the L/G ratio is driven by two factors: cooling duty and absorption.
Q_actual = Q_inlet * (T_out + 460) / (T_in + 460) * (P_in / P_out)
Because the gas is hot, the water temperature will rise significantly. A common mistake is assuming the water temperature is constant. In your Excel sheet, add a heat balance on the water loop to compute the outlet water temperature. If the water exceeds 140°F, you risk scaling and reduced gas absorption. Standard pressure drop correlations (e.g., Calvert or Semrau) were developed for ambient air. Hot gas has lower density and higher viscosity.
M_gas * Cp_gas * (T_in - T_out) = M_evap * h_fg
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