“ΔP > 15 kPa? → Check fan power limit”
Pressure drop is the primary driver for operating cost (fan energy). Your Excel sheet should calculate ΔP using two separate methods depending on the scrubber type:
Kiln exhaust – 10,000 m³/h at 500°C, 2% dust (5 micron). scrubber design calculation excel hot
Temperature (°C or K), Pressure (atm or Pa), Flow rate (Nm³/h or kg/s), Pollutant concentration (ppm or g/m³).
Ensure formulas flow downward. Avoid circular references. “ΔP > 15 kPa
For hot gases, viscosity ( μ ) increases, which changes collection efficiency. η = 1 – exp[- (ψ * Q_l) / (Q_g * μ)] Where ψ is the inertial impaction parameter.
To prevent flooding (where upward gas velocity prevents downward liquid flow), you must calculate the critical column diameter using the correlation or the generalized pressure drop correlation (GPDC). Step 1: Calculate the Flow Parameter ( Flvcap F sub l v end-sub Temperature (°C or K), Pressure (atm or Pa),
$$ L = \frac\textMolar flow rate of SO2 \times \textStoichiometric ratio\textMolecular weight of NaOH \times \textDensity of NaOH solution $$
Use these sequential formulas to build out the active calculating cells in your Excel grid. 1. Hot Gas Quenching & Saturation
If using complex non-linear flooding correlations, write a short VBA macro or use Excel's Goal Seek function to automate the calculation of Gfloodcap G sub f l o o d end-sub Tab 4: Summary & Specification Sheet