Application of TiO₂ Catalyst for Low-Temperature SCR of NOx in New Style PC Kiln

Abstract:

Low-temperature SCR denitration in new style PC kiln was conducted using TiO₂ catalyst. First, the theoretical quantity of ammonia consumption was calculated and applied in this experiment. Maintain the volume of exhaust gas flow and ammonia consumption quantity, concentration of NOx reduced from initial 503 mg/Nm3 of 120°C to 57.5 mg/Nm3 of 170 °C after catalytic reaction. When excess ammonia was injected into SCR reactor, efficiency of the denigration increased linearly too with temperature increasing and achieving the maximum of 89.45% under conditions of 170 °C, ammonia flow rate of 4.00 SL/min. After 20h continuous operating, efficiency of the denigration fluctuated ± 1% only. Pore of TiO₂ catalyst have not blocked by exhaust smoke, that is to say: Low-temperature SCR TiO₂ catalyst can be long-term used in new style PC kiln.

• Periodical: Applied Mechanics and Materials (Volume 529)
• Pages: 16-21
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.529.16
• Online since: June 2014
• Authors: Chun Ping Li*
• Keywords: Ammonia Consumption Quantity, Denitration Efficiency, Operational Stability, Temperature, TiO₂ Catalyst

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