Scrubber Design Calculation Excel Hot -
To build an industrial-grade Excel calculator, your workbook should be divided into five distinct tabs or calculation blocks. Module 1: Inlet Gas Characteristics & Process Data
Comprehensive Scrubber Design Calculation Excel Guide for Hot Gas Applications
Incorporates gas and liquid mass velocities, Schmidt numbers, and packing-specific mass transfer coefficients. Module 5: Pressure Drop & Fan Power
This article provides a comprehensive technical guide and calculation framework for designing a using Microsoft Excel. Hot gas scrubbing (typically involving gas streams from 150∘C150 raised to the composed with power C 1000∘C1000 raised to the composed with power C
: Calculated based on the gas mass flow rate and a target "percentage of flooding" (typically 50–85%) to avoid liquid backup. Height of Packing (HETP) : Determined using correlations like Norton’s to ensure enough contact time for chemical absorption. Pressure Drop ( cap delta cap P scrubber design calculation excel hot
Hot gas contracts as it cools, but the addition of evaporated water vapor expands the total volume. For most hot gas streams, the net effect is a significant reduction in total volumetric flow rate, reducing downstream equipment sizing requirements. Step 3: Size the Vessel Geometry (Packed Bed Example)
= IF(T_in > 200, DeltaP_ambient * ( (1.2) / ( (29/359) * (560/(T_in+460)) ) ), DeltaP_ambient)
An Excel spreadsheet allows you to quickly evaluate different packing materials, gas flow rates, and liquid-to-gas (L/G) ratios. Organize your workbook into four distinct, logical sections. Section 1: Input Parameters (Data Entry)
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cap D equals the square root of the fraction with numerator 4 cross cap A sub s and denominator pi end-fraction end-root Hydraulic Check : For packed towers, the Excel sheet should check the % Flooding (typically designed for
This sheet processes the data using formulas sequentialized from top to bottom. Excel Formula Example / Approach ∘Craised to the composed with power C
For packed bed scrubbers, sizing depends on avoiding a "flooded" state where gas velocity prevents liquid from flowing downward. Gas Velocity ( Vgcap V sub g
Suppose we want to design a scrubber to treat 10,000 ACM/s of gas with a pollutant concentration of 1000 ppm. The desired removal efficiency is 90%. Hot gas scrubbing (typically involving gas streams from
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Need a template? Look for downloadable workbooks that include VBA macros for iterative solving, as standard Excel formulas cannot handle the circular logic required for true hot gas adiabatic saturation.
Liquid viscosity drops as temperature rises, which alters the liquid film mass transfer coefficient ( kLk sub cap L
): Determine the velocity at which flooding occurs based on your packing factor ( Fpcap F sub p Typically selected between 60% and 80% of Vfloodcap V sub f l o o d end-sub Cross-Sectional Area ( ): Divide the actual volumetric flow rate (ACFM) at Tsatcap T sub s a t end-sub Vdesigncap V sub d e s i g n end-sub , calculate the inner diameter ( Step 3: Packing Height Calculation (NTU/HTU Method) The height of the packed bed (