Designing a wet scrubber for requires precise engineering to handle high temperatures and aggressive pollutants. Using an Excel spreadsheet simplifies this process, allowing you to run calculations instantly when input parameters change.
Based on required removal efficiency:
The includes:
Excel: Calculate NTU using logarithmic mean concentration difference (LMTD) for the pollutants. C. Output/Results Section Tower Diameter (meters) Total Packed Height (meters) Required Water Flow Rate (m³/h) Pressure Drop (Pa or in. WC) 3. Key Considerations for Hot Gas Applications scrubber design calculation excel hot
Qsat=Qin⋅TsatTin⋅PinPsat+Volume of Added Water Vaporcap Q sub s a t end-sub equals cap Q sub i n end-sub center dot the fraction with numerator cap T sub s a t end-sub and denominator cap T sub i n end-sub end-fraction center dot the fraction with numerator cap P sub i n end-sub and denominator cap P sub s a t end-sub end-fraction plus Volume of Added Water Vapor
In the field of air pollution control, wet scrubbers are essential for removing particulates and gaseous pollutants from industrial exhaust streams. The design of these systems is a critical task for chemical and process engineers, requiring precise calculations for gas flow, liquid-to-gas ratios, pressure drop, and efficiency to ensure compliance and operational safety. While commercial software exists, the most accessible, flexible, and powerful tool for this job remains .
: This ratio (typically 0.1 to 10) determines the volume of scrubbing liquid needed to handle the pollutant load and provide necessary cooling. Pressure Drop ( cap delta cap P : Use correlations like Norton’s Darcy-Weisbach Designing a wet scrubber for requires precise engineering
This is where most "scrubber design excel" downloads fail. They treat volume as constant.
) : The gas must be cooled before effective scrubbing. Calculate the adiabatic saturation temperature to determine the final volume. :
High pressure drops increase operating costs. This module ensures system viability. Pressure Drop ( a gas flow of 10
This section requires several key formulas inserted into Excel cells.
Convert Standard Cubic Feet per Minute (SCFM) to Actual Cubic Feet per Minute (ACFM) at the hot inlet condition to understand the initial volumetric load:
Where:
For instance, a gas flow of 10,000 ( Nm^3/h ) at 300°C (573.15 K) will have a much larger actual volumetric flow than at 25°C (298.15 K). This directly impacts the chosen column diameter. This fundamental conversion must be incorporated into any "hot gas" scrubber calculation.