田继林,朱建国,朱书骏,刘敬樟,曾雄伟,欧阳子区,吕清刚

• 1:中国科学院工程热物理研究所
• 2:煤炭高效低碳利用全国重点实验室
• 3:大同市煤炭清洁高效利用研究所
• 4:煤灵活燃烧与热转化山西省重点实验室

摘要(Abstract)：

为满足国家“双碳”目标下煤炭清洁高效利用领域的迫切需求，在工业锅炉、电站锅炉等领域开发了煤粉预热燃烧技术。煤粉先进入流态化预热燃烧器中高温改性，再进入锅炉炉膛分级配风燃烧，从而实现了煤高效、低氮燃烧，并在1台60 t/h煤粉锅炉上进行了技术验证。锅炉侧墙对冲布置了2只预热燃烧器，单只预热燃烧器设计热功率为26 MW，以烟煤为原料，在10%～100%负荷范围开展了6个不同负荷的锅炉运行特性和NO_x排放特性试验研究，结果表明：该锅炉在各负荷下运行状态稳定、良好，无助燃条件下实现了10%超低负荷稳定运行；预热燃烧器各参数合理、循环状态稳定，满足锅炉宽负荷的运行要求；负荷下锅炉燃烧效率均在97%以上，10%、20%负荷下锅炉热效率大于85%,30%及以上负荷锅炉热效率均在90%以上；通过调整配风，锅炉各负荷下NO_x原始排放均低于50mg/m~3（φ(O_2)=9%）。60 t/h煤粉预热燃烧锅炉的成功示范，为煤粉高效清洁灵活燃烧技术的发展和应用提供了重要支撑。

关键词(KeyWords)： 预热燃烧;煤粉锅炉;超低负荷稳燃;高效燃烧;超低NO_x排放

Abstract:

Keywords:

基金项目(Foundation): 中国科学院战略性先导科技专项课题（XDA21040100,XDA29010200） ~~

作者(Author): 田继林,朱建国,朱书骏,刘敬樟,曾雄伟,欧阳子区,吕清刚

DOI: 10.19666/j.rlfd.202308135

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