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For an industrial "hot" scrubber design calculation in Excel, you need to structure your spreadsheet to handle gas cooling (quenching) mass transfer simultaneously
Note that as gas cools, its actual volume decreases significantly. Design your column diameter based on the volume at the average or outlet temperature to avoid over-sizing. 3. Column Diameter & Flooding
= (0.000585/vr) * SQRT(sigma/rho_l) + 0.0597 * (mu_l / SQRT(sigma/rho_l))^0.45 * (Ql/Qg)^1.5
) for common packings (like 2" Pall Rings or structured packing) into a lookup table using VLOOKUP or XLOOKUP . 3. Step-by-Step Excel Formula Architecture scrubber design calculation excel hot
Always add a 15–20% safety margin to the calculated packing height to account for liquid maldistribution and potential fouling over time.
=SCFM * ((T_sat_F + 460) / 520) * (14.7 / Operating_Pressure_psia) * (1 + Mole_Fraction_Evap_Water) Use code with caution. Step 3: Calculate Column Diameter Once you establish the design gas velocity ( Vdesigncap V sub d e s i g n end-sub in ft/s) from your flooding curves: =SQRT((4 * (Quenched_ACFM / 60)) / (PI() * V_design)) Use code with caution. 4. Best Practices for Hot Gas Scrubber Sheets
Industrial exhaust systems often handle high-temperature gases loaded with pollutants. Designing a wet scrubber for these "hot gas" applications requires precise thermodynamic and aerodynamic calculations. Manual calculations are time-consuming and prone to errors. For an industrial "hot" scrubber design calculation in
To determine the exact amount of liquid needed to achieve a target exit temperature, use Data > What-If Analysis > Goal Seek to set the exit temperature cell to your target by changing the liquid flow rate cell. Summary Checklist for Excel Design Design Step Key Formula/Data Excel Feature Gas Property Calculation
) : For venturi types, use the Hesketh or Calvert equations to ensure the fan can handle the resistance. Recommended Excel Templates
For high-temperature applications, the "hot" gas must be cooled to its before or during the scrubbing process. Gas Inlet Properties : Define your inlet gas temperature ( Tincap T sub i n end-sub Column Diameter & Flooding = (0
Hot gas applications add layers of complexity—higher volumetric flow rates, reduced collection efficiency due to increased viscosity, and thermal shock risks—but these challenges can be systematically addressed within a well‑constructed Excel framework. By leveraging the equations, tools, and step‑by‑step procedures outlined in this guide, engineers can confidently design scrubber systems that meet regulatory requirements while minimizing energy consumption and lifecycle costs.
What (e.g., HCl, SO2, NH3) are you targeting? What is the maximum inlet temperature of your waste gas?