Factors on the uncatalyzed oxidation rate of sodium sulfite in FGD process

Oxidation of sodium sulfite plays an important role in the development of sodium desulphurization process. In this paper, the influence factors of the oxidation rate of sodium sulfite, such as pH, the concentration of sodium sulfite, airflow rate, and temperature were investigated by a bubbling reactor. The results showed that airflow rate and temperature had significant influences on the oxidation rate of sodium sulfite while pH and the concentration of sodium sulfite almost had no effect on it. These results would provide useful references to the design of sodium desulfurization process.