Designing a scrubber for hot gas streams requires calculating the column diameter, height, and cooling capacity to ensure efficient pollutant removal . Excel-based design tools typically focus on mass transfer pressure drop correlations to determine these dimensions. assets-global.website-files.com Key Design Parameters for Hot Gas Scrubbers Gas Inlet Conditions : You must input the initial temperature (e.g., 400 raised to the composed with power cap F 70 raised to the composed with power cap C ) and flow rate to account for gas expansion. Humidification & Cooling
Packed bed scrubbers are the workhorses of industrial air pollution control, tasked with removing corrosive gases, particulates, and volatile organic compounds (VOCs) from exhaust streams. While sophisticated simulation software exists, Microsoft Excel remains the industry standard for preliminary sizing, vendor verification, and rapid troubleshooting. scrubber design calculation excel hot
By building or purchasing an Excel tool that solves the adiabatic energy balance, corrects gas viscosity for temperature, and uses saturated gas volume for velocity calculations, you move from guessing to engineering. Designing a scrubber for hot gas streams requires
Water evaporated: $$m_evap (kg/h) = \fracQ_sensible2257 , kJ/kg$$ Humidification & Cooling Mastering Scrubber Design: A Guide
Conclusion
| Parameter | Value | Unit | |-----------|-------|------| | Gas flow rate (actual @ T,in) | 25,000 | m³/h | | Inlet gas temperature | 850 | °C | | Outlet gas temperature | 72 | °C | | Evaporation rate | 2.8 | L/s | | Scrubber type | Venturi | - | | Pressure drop | 12.4 | kPa | | Overall efficiency (2 µm) | 96.3 | % | | d50 cut diameter | 0.85 | µm | | Vessel diameter | 1.8 | m | | Total installed cost (est.) | $187,000 | USD | | Annual operating cost | $34,200 | USD/year |
When a hot gas enters a wet scrubber, it is cooled by the evaporation of the scrubbing liquid. For engineering purposes, the gas is assumed to reach its adiabatic saturation temperature. In Excel, you can solve for Tsatcap T sub s a t end-sub using the following energy balance:
