CEMENT KILN SCR DENITRIFICATION TECHNOLOGY
In view of the characteristics of cement kiln flue gas, our company jointly with professional catalyst manufacturers to develop wide temperature...
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In view of the characteristics of cement kiln flue gas, our company jointly with professional catalyst manufacturers to develop wide temperature and high efficiency ( KGC ) catalytic denitrification technology for the cement industry, optimizing the catalyst structure arrangement to achieve one kiln one strategy : ( high temperature and high dust, high temperature and medium dust, medium temperature and medium dust three options are available )
(1) Wide temperature : 200-350℃ , fully meeting the temperature requirements and working conditions of cement plants.
(2) High efficiency : Denitrification efficiency up to 93%, dust content within 120g, SCR system can operate stably.
(3) Up to standard : NOx＜45mg/Nm³; ammonia injection＜2.5kg/ton clinker ; ammonia escape : 1~4mg/Nm³.
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The SCR reactor is arranged behind the high-temperature fan at the kiln tail SCR reactor is arranged at the outlet of high-temperature fan at the kiln tail, with flue gas temperature of 150-240℃ and dust concentration of 60g / Nm³； It does not affect waste heat power generation, the operating resistance of the reactor is about 900Pa, the denitration efficiency reaches 90%, and the NOx emission concentration is ≤ 45mg / Nm³， Ammonia escape ＜ 5mg / Nm³. |
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The SCR reactor is arranged between the waste heat boiler at the kiln tail and the hightemperature fan at the kiln tail The SCR reactor is arranged after the waste heat boiler at the kiln tail and before the high-temperature fan. The design nitrogen oxide is less than 45mg / Nm³ and ammonia escape is less than 5mg / Nm³. The ammonia consumption is less than 1.3kg/t-cl, and the design system resistance is less than 600Pa. |
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The SCR reactor is arranged behind the high-temperature fan at the kiln tail, and the original humidification tower is transformed and used The SCR reactor is arranged before the high-level fan at the kiln tail. For the reconstruction and utilization of the original humidification tower to build the SCR reactor, the design nitrogen oxide is less than 45mg / Nm³, ammonia escape is less than 5mg / Nm³, ammonia consumption is less than 1.3kg/t-cl, and the design system resistance is less than 600Pa. |
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