A venturi scrubber uses a high-velocity gas stream to atomize a scrubbing liquid, creating a vast surface area to capture fine particulate matter (PM). Its standard design has three key sections: a converging section, a narrow throat, and a diverging section.
When utilizing a calculation sheet for real-world optimization, engineers must balance a fundamental trade-off: .
🆕
| | Value | | --- | --- | | Gas flow rate (m³/s) | 10 | | Gas composition (%) | 100 | | Particulate matter concentration (mg/m³) | 1000 | | Gas concentration (ppm) | 100 | | Liquid flow rate (m³/s) | 2 | | Liquid type | Water | | Duct diameter (m) | 1 | | Throat diameter (m) | 0.5 | | Pressure drop (Pa) | 1000 | | Collection efficiency (%) | 90 | venturi scrubber design calculation xls upd
🔧
based on gas flow rates and particle characteristics. Excel-based design tools often integrate these core equations to automate sizing for industrial air pollution control. Core Design Calculations 1. Pressure Drop ( cap delta cap P
| Parameter | Range of Values | Notes | | :--- | :--- | :--- | | | 40 - 120 m/s (130-394 ft/s) | Increase with target efficiency | | Liquid-to-Gas Ratio (L/G) | 0.4 - 1.3 L/m³ (3-10 gal/1000 ft³) | For particulate control | | Pressure Drop (ΔP) | 0.4 - 1.3 kPa (1.6 - 5.2 in H₂O) | General range | | Throat Length (t) | Variable | Depends on L/G ratio and application needs | A venturi scrubber uses a high-velocity gas stream
– Durga Puja (pandal hopping), Dussehra, Diwali prep (cleaning, diyas, sweets)
Gas composition, temperature, dust loading, and desired removal efficiency. Calculation Engine: Utilizing the equations above to solve for throat area ( cap A sub t ) and required pressure drop. Geometry Output:
is the mean droplet diameter, often calculated using the Nukiyama & Tanasawa correlation . 🆕 | | Value | | --- |
cap delta cap P equals 0.532 center dot v sub t squared center dot rho sub g center dot cap A sub t to the 0.133 power center dot open paren 0.56 plus 16.6 center dot the fraction with numerator cap Q sub l and denominator cap Q sub g end-fraction plus 40.7 center dot open paren the fraction with numerator cap Q sub l and denominator cap Q sub g end-fraction close paren squared close paren : Throat velocity ( : Gas density ( cap A sub t : Throat area ( : Liquid-to-gas ratio ( Calvert’s Model
Determined by the Calvert Equation , relating particle diameter and gas-liquid interaction to the "cut diameter". Sizing Dimensions: Calculation of throat area ( Atcap A sub t ), diameter ( Dthroatcap D sub t h r o a t end-sub
What are your target and their particle size distribution ?
. By forcing gas through a narrow "throat" at high velocities (30 to 120 m/s), they create intense turbulence that atomizes scrubbing liquid into fine droplets, which then capture dust and fumes through inertial impaction. Key Design Parameters