Scrubber Design Calculation Excel Best May 2026

SolverOk SetCell:="$M$10", MaxMinVal:=2, ValueOf:=0, ByChange:="$B$5" SolverSolve UserFinish:=True Goal: Minimize diameter while keeping pressure drop < 40 mmH2O/m. If absorption is concentrated (CO₂ in MEA, SO₂ in caustic), the NTU equation becomes implicit. Use circular references with Enable Iterative Calculation (max iterations 1000, max change 0.0001). 4. Error Trapping In every formula, add IFERROR . For example:

NTU = LN( (y_in - y_eq_in) / (y_out - y_eq_out) ) Create a solver loop that adjusts packing height until outlet composition meets environmental limits. 5. Liquid Distribution and Wetting Rate A hidden killer. Even with 100 stages, if liquid doesn’t wet the packing, mass transfer fails. scrubber design calculation excel best

In the world of chemical, petrochemical, and environmental engineering, the packed bed scrubber (or wet scrubber) is a silent guardian. Its job is simple in concept—remove contaminants from a gas stream using liquid—but complex in execution. A poorly designed scrubber leads to flooding, high pressure drops, liquid carryover, or inefficient mass transfer. Because Excel offers transparency

For decades, engineers have relied on rigorous software like Aspen Plus or ChemCAD. However, for quick iterations, feasibility studies, and site-based troubleshooting, for quick iterations

Function ConvertUnits(Value, FromUnit, ToUnit) ' Case logic for "m3/hr to CFM", etc. End Function Instead of manual trial for diameter, use VBA to call Solver:

Why? Because Excel offers transparency, rapid iteration, and customizability that black-box software cannot match. When built correctly, an Excel-based scrubber design tool can be 95% as accurate as expensive simulators at 0% of the cost.

Calculate (m³/m²·h):