Assuming a stoichiometric ratio of 1.5 and a NaOH solution density of 1,000 kg/m³:
For hot gases, you cannot ignore water vapor added to the stream. Use the for water vapor pressure: P_vap = 10^(A – B/(C+T)) scrubber design calculation excel hot
Assuming a typical gas velocity of 3-5 m/s, let's use 4 m/s for this example. Assuming a stoichiometric ratio of 1
| Scrubber Type | Key Design Outputs | |---------------|--------------------| | | Throat velocity (60–120 m/s), pressure drop (based on Johnstone eq.), liquid-to-gas ratio (L/G) | | Spray Tower | Sauter mean diameter (SMD) of droplets, tower height, gas residence time | | Packed Bed | Packing factor (Fp), flooding % (≤75%), pressure drop via Leva or Eckert correlation | | Tray (Impinement) | Number of trays, slot velocity, weir loading | A common mistake is assuming the water temperature
Because the gas is hot, the water temperature will rise significantly. A common mistake is assuming the water temperature is constant. In your Excel sheet, add a heat balance on the water loop to compute the outlet water temperature. If the water exceeds 140°F, you risk scaling and reduced gas absorption.
It looks like you are using AdBlock software.
That’s OK. Who doesn’t? But without advertising income we can’t keep adding new apps and updates. You can also choose some of the membership levels with NO Ads.