Scrubber Design Calculation Excel Hot _hot_ Review

Venturi scrubbers are preferred for hot gas applications due to their robust construction, lack of moving parts, and ability to handle high-temperature, high-humidity streams. The design challenge lies in balancing the gas velocity and liquid injection rate to maximize particle impaction while minimizing energy consumption (pressure drop).

The first step is establishing the "source" data. In an Excel sheet, these are typically grouped in a dedicated "Inputs" tab. Gas Stream Properties : Include the inlet volumetric flow rate (e.g., in ), inlet temperature, and pressure. Saturation Calculations

This section calculates the structural dimensions of the vertical packed tower.

Desired outlet concentration or percentage removal efficiency (e.g., 99.9%). Packing Factors: Packing factor ( Fpcap F sub p ), specific surface area ( ), and critical surface tension of the material. Section 2: Fluid Dynamics and Flooding Constants scrubber design calculation excel hot

This article explores the core calculations for designing a for hot gas streams and how to build (or source) an Excel template that won't freeze or fail you.

Standard scrubber design assumes isothermal conditions. But when your inlet gas is at 400°C (752°F) or higher, three critical physics problems emerge:

) : The gas must be cooled before effective scrubbing. Calculate the adiabatic saturation temperature to determine the final volume. : Venturi scrubbers are preferred for hot gas applications

Typically ranges from 1.5 to 3.5 feet for most packings. Total Height:

Calculate the pressure drop across the packing to size your fan. High-temperature applications often have higher liquid-to-gas ( ) ratios, which increases the pressure drop. Typical Limit: Design for of the flooding velocity. Excel Spreadsheet Structure

Q_sensible = Q_latent

The design calculation spreadsheet provides a rapid iteration tool for sizing Venturi scrubbers. By linking throat velocity directly to pressure drop and efficiency curves, the engineer can optimize the system for the lowest operating cost (fan power) while meeting emission standards.

Flv=LG⋅ρgρlcap F sub l v end-sub equals the fraction with numerator cap L and denominator cap G end-fraction center dot the square root of the fraction with numerator rho sub g and denominator rho sub l end-fraction end-root = Liquid mass flow rate ( = Gas mass flow rate ( = Gas and liquid densities ( Step 2: Determine Gas Capacity Factor ( Cscap C sub s ) at Flooding Using the packing factor ( Fpcap F sub p

Blower Capacity (per hour) = Total Air Flow Rate (m³) / Time . : Excel Formula: =(Entry_Conc - Exit_Conc) / Entry_Conc . L/G Ratio : Use the Torch-Air standard of gallons per ft3f t cubed of air for high-performance units. 3. Pro-Tips for "Hot" Scrubber Sizing In an Excel sheet, these are typically grouped