🫧 Gas Absorption — Reactive Systems Calculator
Estimate chemical enhancement of gas absorption using Hatta number and enhancement factor. Compare reactive absorbed flux with physical absorption flux.
⚗️ Reactive Absorption Film Schematic
📝 Configuration
Key Equations:
Hatta number: Ha = √(k′DA)/kL
Physical absorption: Nphys = kL(CA,i−CA,b)
Enhancement factor: E ≈ Ha/tanh(Ha), limited by Ei
Reactive flux: Nreact = E Nphys
Hatta number: Ha = √(k′DA)/kL
Physical absorption: Nphys = kL(CA,i−CA,b)
Enhancement factor: E ≈ Ha/tanh(Ha), limited by Ei
Reactive flux: Nreact = E Nphys
📊 Results & Visualization
Configure inputs and click Calculate to view results.
📘 Calculation Methodology
Mathematical Model
The calculator treats reactive absorption as physical liquid-film absorption multiplied by an enhancement factor. The Hatta number compares reaction rate to diffusion transport in the liquid film.
Worked Example
For CO₂ absorption into NaOH, the pseudo-first-order rate is k′ = k₂CB. The engine calculates Ha, estimates E, limits it by the instantaneous enhancement value, and reports the reactive flux.
Assumptions
- Liquid-film theory and steady absorption.
- Pseudo-first-order approximation for A+B when B is in excess.
- Enhancement correlation E = Ha/tanh(Ha), capped by Ei.
- Gas-side resistance and heat effects are not included.