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在不同的氨注入方法下,在接触式燃烧炉中进行煤炭和氨联合燃烧的模拟研究

Wangping Sun¹, Qifu Lin¹, Haiyan Li¹

¹Institute of Energy, Hefei Comprehensive National Science Center (Anhui Energy Laboratory), Hefei, 230088, China.

Scientific reports

|May 6, 2025

概括

在煤炉中联合燃烧氨,为减少碳排放提供了一条道路. 上层氨注入改善了煤炭燃烧率并减少了NOx,与其他方法不同,引导了炉改造.

科学领域:

能源工程能源工程
燃烧科学燃烧科学
环境技术环境技术

背景情况:

氨是一种有希望的零碳燃料,可以减少燃煤发电厂的碳排放.
在现有的煤炉中共同燃烧氨是脱碳的可行策略.

研究的目的:

使用实验数据验证氨-煤联合燃烧模拟模型.
为了研究不同氨注入方法对炉性能在20%的联合燃烧比率的影响.

主要方法:

验证了一个模拟模型与实验数据从一个300兆瓦的接触式燃烧炉.
分析了三个注入方法的流量场,燃烧,温度,煤炭燃烧和氧化物排放:均,下层缩和上层缩.

主要成果:

均注射增强了接触流量;集中注射显示了较弱的接触动量.
所有方法都降低了烤箱峰值温度,但增加了出口烟气温度.
上层注入促进了煤炭的燃烧,而统一和下层注入则抑制了它.
均和下层注入减少了NOx,但上层注入显著增加了它.

结论:

氨注入方法严重影响炉性能,煤炭耗尽和排放.
上层缩注入显示了改善煤炭耗尽和减少氧化物的潜力,为炉改造提供了指导.

关键词:

煤炭-氨联合燃烧方式注射方法注射方法.氧化物排放的排放量模拟模拟是为了模拟.接式燃烧炉的使用方式

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