Abstract. With the intensified requirements能低 on ambient air quality對那, controlling NOx emission from sintering flue gas has 音藍become the most important priority in朋低 steel industry. Ozone oxi亮子dation denitration process has become the most clos慢知ely watched sintering flue ga筆林s denitration technology. In 友線order to investigate the influence of differen靜不t operating conditions 說金on NO oxidation in practical engineerin分生g application of ozone oxidation den志家itration process, an ozone ox做輛idation system was built, and sinter間事ing flue gas was extracted from the 物少pipeline between the in章業duced draft fan and the desulfur坐大ization tower. The influence of discharge pow上多er and O₂ flow rate of ozone generator o訊熱n O₃ concentration, O₃ yield and NO oxidation efficiency were in吧亮vestigated. The results indicated tha藍年t NO oxidation efficiency in海費creased with the discharge power. And the increase 吃就of O₃ dosage imposed a signi新子ficant influence on NO oxidation effici但很ency. However, little effect of O線放₂ flow rate on NO oxidation eff山上iciency was observed.