Scrubber Design Calculation Excel Best Review

=EXP( -2.5 * LN(X) - 1.2 ) [Approximate; use published tables for accuracy] Then back-calculate area: A = Gas_flow_rate / G_flood . Diameter = SQRT(4*A/π) . Using the Leva correlation (simplest for Excel):

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

ΔP (in H2O/ft packing) = C * (G² / ρg) * (10^(L*D)) Where C and D are packing constants. Or use the generalized method: ΔP = 0.115 * (G^1.85) * (Fp^0.85) for dry packing, plus liquid correction. scrubber design calculation excel best

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):

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. =EXP( -2

Use Goal Seek on pressure drop vs. gas rate to avoid flooding. 4. Packing Height (Mass Transfer) This is where Excel shines. For gas absorption (e.g., HCl in water), the Height of Transfer Unit (HTU) method is standard.