Before any mass transfer (absorption) can be calculated, you must determine the quenched gas properties. The hot gas enters at temperature Tincap T sub i n end-sub and is cooled to the adiabatic saturation temperature Tsatcap T sub s a t end-sub by evaporating water. Heat Duty (
$$ L = \frac\textMolar flow rate of SO2 \times \textStoichiometric ratio\textMolecular weight of NaOH \times \textDensity of NaOH solution $$
Calculations must be performed on a to account for the additional water vapor added during cooling. 3. Sizing the Tower Diameter Individual Design of 2 Scrubbers - UKDiss.com scrubber design calculation excel hot
Inlet flow rate (SCFM/Nm³/hr), inlet temperature (°C/°F), operating pressure, and gas molecular weight.
| Parameter | Value | Unit | | --- | --- | --- | | Gas flow rate (Q) | 10,000 | Nm³/h | | SO2 concentration (C) | 500 | ppm | | Scrubbing liquid | NaOH solution | - | | Temperature (T) | 25 | °C | | Pressure (P) | 1 | atm | Before any mass transfer (absorption) can be calculated,
For a typical hot application (Inlet: 600°F, Outlet: 160°F): Factor = (620) / (1060) =
The required liquid recirculation flow rate is determined by the Liquid-to-Gas ( inlet temperature (°C/°F)
Percentage of air, water vapor, and target pollutants (e.g., SO2cap S cap O sub 2 HClcap H cap C l
Qgas, in+Qliquid, in=Qgas, out+Qliquid, out+Qevaporationcap Q sub gas, in end-sub plus cap Q sub liquid, in end-sub equals cap Q sub gas, out end-sub plus cap Q sub liquid, out end-sub plus cap Q sub evaporation end-sub