刁保圣,彭彬彬,李子祥,王亚军,陈臻

• 1:国家能源集团泰州发电有限公司
• 2:中国电力工程顾问集团华东电力设计院有限公司
• 3:上海交通大学机械与动力工程学院

摘要(Abstract)：

以660 MW机组墙式切圆锅炉为对象，采用数值模拟方式研究了风率分配对煤粉锅炉炉内燃烧、受热面传热及NOx转化特性的影响规律。结果表明：在固定的燃尽风率下，一次风率的增大使得煤粉燃烧性能呈现先明显恶化而后有所改善的“V字型”变化趋势；一次风率升高将导致燃烧初期生成较多燃料型NOx，并导致炉膛出口NOx排放增大；燃尽风率不会改变燃烧性能随一次风率的变化规律，但其升高将导致煤粉燃烧性能显著恶化的临界一次风率下降；风率分配变化带来的一、二次风射流动量的变化是影响锅炉性能的主要因素，二者动量接近时将导致炉内燃烧性能显著恶化。据此，在锅炉实际运行中应尽量避免一次风率的大幅升高，若必须提高一次风率，则应适当降低燃尽风率来减轻一次风率升高后带来的锅炉性能的恶化。

关键词(KeyWords)： 燃尽风率;主燃区;一、二次风率;燃烧特性;褐煤锅炉

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刁保圣,彭彬彬,李子祥,王亚军,陈臻

DOI: 10.19666/j.rlfd.202212250

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