Do you need specific equations for along with particulate removal? Share public link
– Raksha Bandhan (DIY rakhis), Independence Day (vintage India photos), Teej
The pressure drop is the most significant operating cost. The most common formula used in design spreadsheets is the Johnstone equation or the Calvert modification: is an empirical constant specific to the scrubber geometry. 3. Droplet Size Prediction
): For a particle size in microns (cell D12 ): =1 + (2 * 0.065 / D12) * (1.257 + 0.4 * EXP(-1.1 * D12 / (2 * 0.065))) If V_t is in cell B6 , gas density is in B8 , and L/m3L/m cubed venturi scrubber design calculation xls upd
This parameter defines the likelihood of a particle colliding with a droplet. It is calculated using the particle diameter (dp), particle density (ρp), throat velocity (vt), gas viscosity (µg), and the droplet diameter (dl) from the previous step.
Typically greater than or equal to 4 times the throat diameter to ensure optimal pressure recovery. 4. Liquid-to-Gas Ratio (L/G)
Flow rate (ACFM), temperature, pressure, and moisture content. Throat Geometry: Velocity ( vthroatv sub t h r o a t end-sub ), diameter ( Dthroatcap D sub t h r o a t end-sub ), and length ( Lthroatcap L sub t h r o a t end-sub ). A common ratio for throat-to-diameter length is 3:1 . Do you need specific equations for along with
Modern XLS design tools often include "lookup" tables for material compatibility—ensuring the metals or plastics chosen can withstand high temperatures and corrosive gases like SO2cap S cap O sub 2 I2cap I sub 2
The narrowest point where scrubbing liquid is injected and atomized.
$$ \eta = 1 - \exp(-\frac4.6 \times LG \times \frac\rho_L\rho_g \times (\fracd_pd_50)^2) $$ Typically greater than or equal to 4 times
The efficiency of removing a specific particle size is calculated using the Johnstone equation:
An Excel spreadsheet ( .xls or .xlsx ) provides a robust, transparent framework for executing these iterative engineering calculations. This article details the mathematical models, design steps, and structural setup required to build or update an industrial-grade Venturi scrubber design calculator. 1. Fundamentals of Venturi Scrubber Operation
Alternatively, the Hesketh equation can be implemented in Excel:
Saturated gas flow rate, Cunningham Slip factor, Mean droplet diameter ( Throat Diameter Pressure Drop cap delta cap P Fan Power requirement Actionable Next Step: ready-to-use template
: Estimates the water or chemical solution needed to replace evaporative losses. Where to Find the Spreadsheet