Scrubber Design Calculation Xls Upd !free!: Venturi

Using this template, designers can quickly and easily perform venturi scrubber design calculations and evaluate the impact of different design parameters on performance.

Typically greater than or equal to 4 times the throat diameter to ensure optimal pressure recovery. 4. Liquid-to-Gas Ratio (L/G)

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If your process gas flow fluctuates, use the XLS sheet to evaluate performance at minimum flow rates. This data determines whether a variable-throat (adjustable damper blade) design is required to maintain constant pressure drop and efficiency.

The pressure drop determines the fan power required. Use the Hesketh Equation for high accuracy: venturi scrubber design calculation xls upd

This guide explores the fundamental design equations and provides a structured approach to building a calculation spreadsheet. Fundamental Principles of Venturi Scrubbers A Venturi scrubber consists of three main sections:

The narrowest point where scrubbing liquid is injected and atomized.

Convert the calculated pressure drop into required mechanical energy:

Venturi scrubbers are highly efficient air pollution control devices used primarily for removing particulate matter and hazardous gases from industrial exhaust streams. Designing an effective system requires precise calculations to balance collection efficiency against energy costs. Using this template, designers can quickly and easily

where dp_m = dp_um * 1E-6 .

: Mean droplet diameter (calculated via Nukiyama & Tanasawa correlation). : Cunningham Slip correction factor. : Gas viscosity. 2. Determine Physical Dimensions

Now let’s flesh out the Excel side of each block.

Increasing velocity increases the impaction parameter ( The pressure drop determines the fan power required

Venturi scrubbers typically operate at throat velocities between 15,000 to 24,000 ft/min (75 to 120 m/s).

d0=585Vt⋅σρl+597⋅(μlσ⋅ρl)0.45⋅(1000⋅LG)1.5d sub 0 equals the fraction with numerator 585 and denominator cap V sub t end-fraction center dot the square root of the fraction with numerator sigma and denominator rho sub l end-fraction end-root plus 597 center dot open paren the fraction with numerator mu sub l and denominator the square root of sigma center dot rho sub l end-root end-fraction close paren to the 0.45 power center dot open paren 1000 center dot the fraction with numerator cap L and denominator cap G end-fraction close paren to the 1.5 power = Liquid surface tension ( dynes/cmdynes/cm ρlrho sub l = Liquid density ( g/cm3g/cm cubed μlmu sub l = Liquid viscosity ( poisepoise Vtcap V sub t = Relative velocity in the throat ( 4. Pressure Drop Calculation (

Determining the saturated gas flow rate based on inlet temperature and moisture content. Available Spreadsheet Resources

= Cunningham slip correction factor (crucial for sub-micron particles) The penetration ( ) for a given particle size is modeled as:

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