燃烧无烟煤水泥熟料生产线高效SNCR应用实例

doi:10.19698/j.cnki.1001-6171.20236055

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摘要

T水泥厂100%燃烧无烟煤，自脱硝效果差，NOx初始排放浓度偏高，分解炉出口CO浓度较高，SNCR脱硝效率低。采取在分解炉炉膛的不同高度安装新型氨水喷射器，将氨水雾滴喷入烟气，加速氨水与NOx的混合；建立智能控制模型，动态调整烧成系统不同温度区间的喷氨量，降低喷氨总量；测试不同层喷枪脱硝效果，确定C6进出口为喷枪脱硝最佳喷射点等措施进行了改造，改造后，T水泥厂高效SNCR脱硝效率可达75%。对比了燃烧无烟煤和烟煤的脱硝效率，若将燃烧无烟煤调整为燃烧烟煤，则T水泥厂脱硝效率可进一步提升。

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	桑圣欢
	闫伟
	罗超
	吴涛
	胡正夏

关键词: 高效SNCR')" href="#">

高效SNCR 无烟煤氨水喷射器脱硝效率节能降耗

Abstract:

The cement plant burns 100% anthracite, the self-denitrification effect is poor, the initial emission concentration of NOx is high, the CO concentration at the outlet of the calciner is high, and the SNCR denitrification efficiency is low. By installing new ammonia injectors at different heights of the calciner, ammonia mist droplets are sprayed into the flue gas to accelerate the mixing of ammonia and NOx. And an intelligent control model is established to dynamically adjust the amount of ammonia injected in different temperature ranges of the pyro system to reduce the total amount of ammonia injection. It tests the denitrification effect of different layers of spray guns, and determines the inlet and outlet of C6 as the best spray points for denitrification of spray guns, etc. After the transformation, the high-efficiency SNCR denitrification efficiency of T cement plant can reach 75%. Compared with the denitrification efficiency of burning anthracite and bituminous coal, if the burning anthracite is adjusted to burning bituminous coal, the denitrification efficiency of T cement plant can be further improved.

Key words: high-efficiency sncr anthracite ammonia injectors denitrification efficiency energy saving and consumption reduction

收稿日期: 2023-03-28 修回日期: 2023-11-25 出版日期: 2023-11-25 发布日期: 2023-11-15 整期出版日期: 2023-11-25

ZTFLH:

TQ172.625

引用本文:

桑圣欢, 闫伟, 罗超, 吴涛, 胡正夏 .

燃烧无烟煤水泥熟料生产线高效SNCR应用实例 [J]. 水泥技术, 2023, 1(6): 55-59.
SANG Shenghuan, YAN Wei, LUO Chao, WU Tao, HU Zhengxia.

Example of Efficient SNCR Application in Anthracite-burning Cement Clinker Production Line . Cement Technology, 2023, 1(6): 55-59.

链接本文:

http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20236055 或 http://www.cemteck.com/CN/Y2023/V1/I6/55

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