He adjusted the packing depth from 10 feet to 14. The pressure drop calculation—the heart of the sheet—recalculated.
| Parameter | Temperature Effect | Design Implication | |---|---|---| | Gas density | Decreases (ρ ∝ 1/T) | Lower pressure drop for same velocity; larger vessel required | | Gas viscosity | Increases (T^0.67–1.0) | Reduced particle collection efficiency | | Solubility | Generally decreases | Higher liquid flow rates needed | | Evaporation rate | Increases | Water makeup requirements increase | | Material strength | Decreases at high T | Thicker vessel walls or special alloys |
Qgas, in+Qliquid, in=Qgas, out+Qliquid, out+Qevaporationcap Q sub gas, in end-sub plus cap Q sub liquid, in end-sub equals cap Q sub gas, out end-sub plus cap Q sub liquid, out end-sub plus cap Q sub evaporation end-sub scrubber design calculation excel hot
Scrubbers are typically designed to operate at 60% to 80% of the flooding velocity ( Calculate Area ( ) and Diameter ( ):
Ten minutes later, the alarm fell silent. The plume at the top of the stack turned from a ghost of a haze to invisible, clean air. Elias leaned against the steel railing, the heat of the tower radiating against his back, and smiled. He adjusted the packing depth from 10 feet to 14
[ \psi = \fracC \cdot d_p^2 \cdot \rho_p \cdot v_t9 \cdot \mu_g \cdot d_l ]
). Ensure your Excel formulas for fluid properties are temperature-dependent rather than static. The plume at the top of the stack
| Parameter | Value | Unit | | --- | --- | --- | | Gas flow rate (Qg) | | m³/s | | Gas temperature (Tg) | | °C | | Gas pressure (Pg) | | Pa | | Liquid flow rate (Ql) | | m³/s | | Liquid temperature (Tl) | | °C | | Contaminant concentration (C) | | ppm | | Scrubber diameter (D) | | m | | Scrubber height (H) | | m | | Liquid-to-gas ratio (L/G) | | - | | Contaminant removal efficiency (η) | | - |
If using complex non-linear flooding correlations, write a short VBA macro or use Excel's Goal Seek function to automate the calculation of Gfloodcap G sub f l o o d end-sub Tab 4: Summary & Specification Sheet
), Norton’s correlation or empirical mass transfer coefficients ( cap K sub cap G a end-sub