Reactive absorption of CO2 with NaOH as absorbent was evaluated experimentally in a lab scale spray dryer. Taguchi method was used for design of experiments. Results showed that the most important factors are inlet CO2 concentration, nozzle size, absorbent concentration and temperature, respectively. The optimum conditions are 150°C for temperature, 10% (w/w) for NaOH concentration, 10% for CO2 concentration, and 0.5 mm for nozzle diameter. By conducting experiments under the optimum conditions, the removal efficiency was obtained as 69.4%.
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