Scrubber Design Calculation Excel Hot Fixed -

The L/G ratio determines the number of scrubbing droplets.

To make the spreadsheet functional and user-friendly, incorporate these features:

High evaporation rates mean substantial make-up water is required. 2. Key Design Parameters for the Excel Calculator

Typical gas velocities vary by scrubber type: scrubber design calculation excel hot

For hot gases, packing material must be high-temperature resistant (e.g., metal, ceramic, or specialized plastics). Input the provided by manufacturers in your Excel sheet. Calculate pressure drop ( ) using the Ergun equation or manufacturer correlations. Step 4: Mass Transfer (Height of Packing) The removal efficiency ( ) is determined by the number of transfer units ( NTUcap N cap T cap U ) and the height of a transfer unit ( HTUcap H cap T cap U (Assuming linear equilibrium) For hot scrubbing, NTUcap N cap T cap U

| | | | --- | --- | | Qg (m³/s) | 1 | | Vg (m/s) | 4 | | D (m) | =SQRT(4*1/(PI()*4)) | =0.89 m |

The following platforms provide templates and detailed spreadsheets for scrubber sizing: Wet Scrubber Design Excel Sheet | PDF - Scribd The L/G ratio determines the number of scrubbing droplets

: Calculate the saturated gas flow rate. For example, a gas at 400°F may have a saturation temperature around 127°F, which changes the volumetric flow rate ( Qsatcap Q sub s a t end-sub ) used for sizing.

High evaporation may lead to entrainment. Ensure efficient mist eliminators are included. Conclusion

, ensure your design notes specify high-performance materials such as , 316L Stainless Steel , or exotic alloys like Hastelloy C276 for the quench zone. ✅ Summary of Core Design Outputs Key Design Parameters for the Excel Calculator Typical

Ensure your pump sizing in Excel accounts for this total volume. ⚠️ Critical Checks for "Hot" Gas Scrubbers If your incoming gas is over 150∘C150 raised to the composed with power cap C ( 300∘F300 raised to the composed with power cap F

For particulate removal, the Johnstone equation expresses collection efficiency as:

If you don't want to rebuild the wheel from scratch, here are your options:

The pressure drop ($\Delta P$) represents the energy used to accelerate the liquid droplets to the gas velocity. This calculation utilizes the Hesketh or Calvert correlation.

: Map cells like B16 as Tower_Diameter and B22 as Packing_Height to keep formulas clean and readable.