Before finalizing your Excel sheet design, run a baseline verification check:
This is critical for "hot" applications. You must calculate the heat transfer between the hot gas and the cooler liquid. : Sensible heat + Latent heat of evaporation.
$$F_p = X = \fracLG \times \sqrt\fracρ_gρ_l$$ Excel: =(L_G_ratio)*(SQRT(gas_density/1000)) (assuming liquid density ~1000 kg/m³)
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 scrubber design calculation excel hot
The design of a scrubber for hot gases is an iterative process that begins with understanding the physical properties of the gas at its saturated state. 1. Calculate Adiabatic Saturation Temperature ( Tsatcap T sub s a t end-sub
Designing these systems requires iterative thermodynamic calculations. Building an automated Excel model streamlines this process, prevents manual calculation errors, and allows for rapid optimization of column diameter and packing height. 1. Key Design Challenges for Hot Gas Scrubbers
To construct the sheet manually, integrate these specific formulas into your cells: Density of Saturated Gas ( ρgrho sub g Before finalizing your Excel sheet design, run a
Tower diameter holds operational gas velocity safely within the non-flooding window (
where the Residual Error is zero, use that verified temperature to drive the structural sizing dimensions below: Objective Excel Formula Calculated using ideal gas laws at the newly solved Tascap T sub a s end-sub Tower Cross-Sectional Area =Saturated_Volume_m3_s / Target_Gas_Velocity_m_s Vessel Internal Diameter =SQRT((4 * Area_Cell) / PI()) Evaporative Water Makeup Rate =$B$5 * (Saturated_Humidity_Cell - $B$6) 4. Operational Risks with Hot Gases
This post walks you through building a for hot gas streams (SO₂, HCl, or particulate removal with cooling). $$F_p = X = \fracLG \times \sqrt\fracρ_gρ_l$$ Excel:
Utilize the Eckert or Sherwood-Leva-Eckert correlations. Capacity Parameter (
The liquid-to-gas ratio (L/G) is a critical parameter in scrubber design. A higher L/G ratio typically results in better contaminant removal, but also increases the energy consumption.