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Show 5. Conclusion Higher heat efficiency and lower NOx are always pursued. But it is rather natural that these two are contrary. I believe the non-catalytic ammonia denitration method is one of the most efficient countermeasures to overcome this contradiction. It can be applied to large scale furnaces as well as small capacity heat treatment burners. The temperature of exhaust gas can cover a wide range, from 700 to 900°C, by adding a small amount of reducing agent. This denitration method only needs simple and inexpensive equipment. Besides, it has a major economical advantage when applied in the integrated iron works in that the running cost is negligible. At Fukuyama Works, we will introduce this method for actual use: for reheating furnaces, by paying attention to the balance between demand and supply of oxygen in the future, and for regenerative burners, when updating the current equipment. Reference 1. Miyadera and Kawai, Journal of Fuel Society of Japan, 56, 605 (1977) 2. Sato and Serna, Energy & Environment Lab. (Japan), Rep. No. 218 (1984) 3. Kasaoka, Chemical Engineering (Japan), P 13 - 58, July, 1982 -11- |