Translated from Nenshonō Kagaku to Gijutsu, 3, 229–236 (1995) Study on NO_x Reduction in Reburning†

Translated from Japanese Originally published in Nenshō no Kagaku to Gijutsu [Combustion Science and Technology Japanese Edition], 3,-229-236 (1995).

Abstract

NO_x reduction in reburning was experimentally and numerically investigated. In the experiments, NO_x reduction in simulated exhaust gas was confirmed in a flow reactor system and the concentrations of intermediate products such as HCN and N₂O were measured. By controlling the temperature and air ratio, NO_x reducing reactions proceeded efficiently and a 40% reduction of NO_x was observed when the initial NO_x concentration was 100 ppm. The calculated results agreed with the experimental results very well. Reaction analysis showed that for the HCN reducing reactions in the burn-out zone, two temperature regions were important, and in these regions HCN was reduced to N₂O and finally to N₂ even in an oxidizing atmosphere.

Keywords:

• Reburning
• NO_x reduction
• methane
• hydrogen cyanide
• reaction kinetics

Notes

Translated from Japanese Originally published in Nenshō no Kagaku to Gijutsu [Combustion Science and Technology Japanese Edition], 3,-229-236 (1995).

Additional information

Notes on contributors

A. SEO

Corresponding author. E-mail: [email protected].