Research on the Simultaneous Desulfurization and Denitrification of Fumes by Combining Ozone Oxidation and the Double Alkali Method

Abstract:

This paper introduced the fundamental principle of the simultaneous desulfurization and denitrification by combining ozone oxidation and the NaOH double alkali method. And the total chemical reaction equations were achieved by analyzing the process of the absorption of the productions of ozone oxidation by NaOH double alkali method. Then, based on thermodynamic principle, the partial pressure of SO_x, NO_x and CO₂ when reactions reached equilibrium were calculated respectively. This paper also studied the reaction mechanism of the absorption of SO_x and NO_x and analyzed the absorption characteristic of SO_x and NO_x in absorption solution. The results showed that the simultaneous desulfurization and denitrification by combining ozone oxidation and NaOH double alkali method was feasible. Not only the elimination ratio of SO_x and NO_x were almost up to 100%, but also CO₂ was removed on a considerable scale. The partial pressure of SO_x and NOx was very important to the pH value of the absorption solution which affected the elimination ratio of SO_x and NO_x greatly.

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 759-763
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.759
• Online since: December 2014
• Authors: Ming Li, Bang Fa Peng, Lin Sheng Wei*, Zhao Ji Hu, Min Xu
• Keywords: Desulfurization and Denitrification, Fumes, NaOH Double Alkali Method, Ozone Oxidation

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