李子祥,张启超,乌晓江,叶妮娜,许芸,张忠孝

• 1:上海交通大学机械与动力工程学院
• 2:上海能源建设工程设计研究有限公司
• 3:国家能源集团科学技术研究院有限公司

摘要(Abstract)：

为揭示大容量高水分褐煤机组的超低负荷运行特性及性能优化方式，基于建立并验证的燃煤锅炉燃烧模型，研究了33%最大连续额定负荷下燃烧器运行方式对660 MW高水分褐煤锅炉炉内燃烧、传热及NO_x转化特性的影响。结果表明：超低负荷下炉内仍可形成良好组织的流动及燃烧场，但锅炉综合性能显著下降，如燃烧温度及受热面吸热量显著降低、炉膛出口NO_x排放增加等；运行4层燃烧器时投运连续的下、中间组或中间、上组燃烧器，可有效防止燃烧、传热过程的显著恶化及NO_x排放的明显增加；燃烧器投运层数影响锅炉综合性能，运行2层燃烧器时炉内剧烈燃烧区域过于集中，不利于维持较高的燃烧温度及传热强度，炉膛出口NO_x排放升高。研究结果揭示了超低负荷下燃烧器投运位置及层数对660 MW高水分褐煤锅炉综合性能的影响，可为大规模可再生能源电力并网背景下高水分褐煤机组参与深度调峰的运行调整及优化提供指导。

关键词(KeyWords)： 褐煤;超低负荷;燃烧器位置;燃烧器层数;锅炉性能

Abstract:

Keywords:

基金项目(Foundation): 清洁高效燃煤发电与污染控制国家重点实验室开发课题（D2021FK058）;; 国家重点研发计划项目（2022YFB2403200）~~

作者(Author): 李子祥,张启超,乌晓江,叶妮娜,许芸,张忠孝

DOI: 10.19666/j.rlfd.202311177

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