Scrubber Design Calculation Excel Hot - [repack]

The design of a wet scrubber—whether for particulate removal or gas absorption—requires a systematic calculation process to determine critical dimensions and operational parameters. Utilizing a structured Excel spreadsheet

Hot gases will evaporate the scrubbing liquid until they reach the adiabatic saturation temperature ( Tsatcap T sub s a t end-sub scrubber design calculation excel hot

1. Residence time (t_r): Volume of scrubber (ft³) / Q_actual (ft³/sec).
2. Evaporation time (t_e): t_e = (ρ_l * d_p^2) / (8 * k_g * M_w * P_sat)

: Initial and saturation humidity ratios (lb water/lb dry gas). Excel Tip: Use the Excel Solver Add-in to find the Tsatcap T sub s a t end-sub that balances this equation, as Hsatcap H sub s a t end-sub are both temperature-dependent. 2. Determine Saturated Gas Flow Rate ( Qsatcap Q sub s a t end-sub The design of a wet scrubber—whether for particulate

Tab 2: Calculation Engine

• Contains the raw formulas linked to the Input tab.
• Solver Add-in Integration: A macro button to run Excel Solver. This optimizes the Throat Diameter to meet a user-defined "Target Pressure Drop" (e.g., design for exactly 15 in. w.c. pressure drop).

The scrubber diameter (D) can be calculated using the following equation: Residence time (t_r): Volume of scrubber (ft³) /

Recommendation for Excel Implementation: Ensure the spreadsheet utilizes named ranges (e.g., Gas_Temp, Gas_Density) rather than cell references (e.g., B5). This minimizes errors during formula expansion and makes the "Solver" functionality more robust.

In Excel: =packing_constant * (G_prime^1.82) * (gas_viscosity^0.2)