The Excel sheet should calculate the "Cut Diameter" ($d_pc$)—the particle size collected with 50% efficiency.
Choose a packing type (e.g., Intalox Saddles, Rosette) and its specific Packing Factor ( Fpcap F sub p ) .
[Download the Pro-Tier "Hot Gas Venturi Scrubber Calculator" Excel Template (VBA Enabled)] – Includes psychrometric loop, material selector, and 3D output chart.
Comprehensive Guide to Hot Gas Scrubber Design Calculations in Excel scrubber design calculation excel hot
Designing a "hot" (active) scrubber calculation sheet requires a blend of thermodynamics, mass transfer theory, and hydraulic correlations. This guide breaks down the essential components of a robust scrubber design Excel spreadsheet.
: The baseline volume of continuous makeup water needed to combat evaporation.
For process engineers, a manual spreadsheet is a powerful and customizable tool. The best starting point is to download a "Scrubber Design Calculation Excel" template and then modify it to include hot gas quenching and property lookups: The Excel sheet should calculate the "Cut Diameter"
I can provide targeted VBA code snippets or the exact packing factor constants for your calculations. Share public link
Ensure the spreadsheet utilizes named ranges (e.g., Gas_Temp , Gas_Density ) rather than cell references (e.g., B5 ). This minimizes errors during formula expansion and makes the "Solver" functionality more robust.
), not the hot inlet flow rate. The sudden drop in temperature decreases gas volume, but the added evaporated water vapor increases it. 2. Determine Liquid-to-Gas ( HCL Packed Bed Scrubber Design Guide | PDF - Scribd Comprehensive Guide to Hot Gas Scrubber Design Calculations
Designing a scrubber for "hot" gas streams requires more than just standard absorption formulas. You must account for gas cooling, adiabatic saturation, and volume expansion. Use this structure to build a robust Excel calculator. 1. Core Inputs (The Essentials) : Inlet temperature ( Tincap T sub i n end-sub ), mass flow rate ( ṁgasm dot sub g a s end-sub ), and initial pollutant concentration ( Cincap C sub i n end-sub Target Efficiency : Desired removal percentage (e.g., 99%). Liquid-to-Gas (L/G) Ratio : Typically for wet systems. 2. Key Design Formulas for your Excel Cells Saturation Temperature ( Tsatcap T sub s a t end-sub
| Parameter | Example Value | Unit | | :--- | :--- | :--- | | Gas flow rate (actual) | 10,000 | m³/h | | Gas inlet temperature | 220 | °C | | Gas outlet temp (cooled) | 65 | °C | | Operating pressure | 1.013 | bar(a) | | Packing type | 2" Plastic Pall Ring | - | | L/G ratio (target) | 1.5 - 2.5 | L/m³ |
): Usually designed at 60% to 80% of the flooding velocity, typically between 1.5 to 2.5 m/s.