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Keywords:

  • Carbon dioxide;
  • Kinetic equation;
  • Response surface methodology;
  • Shrinking core model;
  • Spray-dryer absorber

Abstract

A semi-empirical kinetic correlation was obtained through a shrinking core model assumption for reactive absorption of CO2 with NaOH solution by applying response surface method analogy in a laboratory-scale spray-dryer absorber. The effect of approach temperature, absorbent concentration, nozzle diameter, and L/G ratio on the kinetic coefficient was studied and the optimum operating conditions to reach the maximum absorption were determined.