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| Practice of Cement Kiln Fue Gas Denitrification System |
| Chengxian Qilianshan Cement Co., Ltd. |
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Abstract It introduces the principle and scheme of the cement kiln flue gas denitrification in both kiln and calciner system, which using the low NOx pulverized coal combustion control technology in the kiln that controls the primary air flow <6%, and the high-strength reduction combustion control technology in the calciner to reduce thermal NOx from the kiln. In the actual operation of 3 000t/d (with TDF calciner of ?6.1m×31m) cement clinker production line, with the adoption of above technical scheme, results indicate that the denitrification efficiency can be reached above 60%, saving ammonia water and reducing denitrification costs.
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Received: 25 June 2019
Published: 20 January 2020
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