1 000 MW超超临界锅炉低NOx 燃烧技术改造及性能优化试验

doi:10.11930/j.issn.1004-9649.2014.10.92.5

中国电力 ›› 2014, Vol. 47 ›› Issue (10): 92-97.DOI: 10.11930/j.issn.1004-9649.2014.10.92.5

1 000 MW超超临界锅炉低NO_x燃烧技术改造及性能优化试验

邹磊¹, 岳峻峰¹, 陈永生², 梁绍华¹, 许亦然¹, 张恩先¹

1. 江苏方天电力技术有限公司,江苏南京 211102;
2. 国电泰州发电有限公司,江苏泰州 225327

收稿日期:2014-03-21 出版日期:2014-10-18 发布日期:2015-12-10
作者简介:邹磊（1985—）,男,湖北黄冈人,硕士,工程师,从事电站锅炉燃烧优化、性能试验和计算机数值模拟的研究。E-mail: zoulei0128@163.com

Retrofit with Low NO_x Combustion Technique and Performance Optimization Test for a 1 000-MW Ultra Supercritical Boiler

ZOU Lei¹, YUE Jun-feng¹, CHEN Yong-sheng², LIANG Shao-hua¹, XU Yi-ran¹, ZHANG En-xian¹

1. Jiangsu Frontier Electric Technology CO., LTD., Nanjing 211102, China;
2. Guodian Taizhou Power Generation CO., LTD., Taizhou 225327, China

Received:2014-03-21 Online:2014-10-18 Published:2015-12-10

摘要/Abstract

摘要： 为降低NO_x排放,某电厂对其1 000 MW超超临界锅炉进行了低NO_x燃烧技术改造。改造后锅炉NO_x排放质量浓度较改造前降低42%,但CO排放质量浓度、飞灰含碳质量分数较改造前均有上升。在分析改造前后锅炉燃烧工况变化的基础上进行了燃烧调整试验,通过改变省煤器出口O₂体积分数、二次风配风方式、OFA风量和SOFA风量,研究了不同工况下锅炉燃烧及NO_x排放特性。调整后锅炉在高负荷下CO排放质量浓度降至100 mg/m³以下,飞灰含碳质量分数降至1%以下。

关键词: 超超临界锅炉, 低NOx燃烧技术改造, NOx排放, 燃烧调整

Abstract: The technical retrofit adopting low NO_x combustion technology was carried out for a 1 000-MW ultra supercritical boiler to reduce the NO_x emissions. After the retrofit, the NO_x emission mass concentration was down by 42%, while the CO emission mass concentration and the carbon content of fly ash were higher. Therefore, based on the analysis of the variation of the combustion conditions before and after the retrofit, the combustion adjustment test was conducted, in which the boiler combustion and NO_x emission characteristics under different working conditions were studied by changing the oxygen volumetric fraction at the economizer exit, the secondary air distribution mode, the OFA flow rate and the SOFA flow rate. The test results show that the CO emission mass concentration has been dropped to less than 100 mg/m³ and the carbon content of fly ash has been down below 1% under high boiler load after the combustion adjustment.

Key words: ultra supercritical boiler, retrofit with low NOx combustion technique, NOx emission, combustion adjustment

中图分类号:

TK227.1

邹磊, 岳峻峰, 陈永生, 梁绍华, 许亦然, 张恩先. 1 000 MW超超临界锅炉低NO_x燃烧技术改造及性能优化试验[J]. 中国电力, 2014, 47(10): 92-97.

ZOU Lei, YUE Jun-feng, CHEN Yong-sheng, LIANG Shao-hua, XU Yi-ran, ZHANG En-xian. Retrofit with Low NO_x Combustion Technique and Performance Optimization Test for a 1 000-MW Ultra Supercritical Boiler[J]. Electric Power, 2014, 47(10): 92-97.

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1 000 MW超超临界锅炉低NO_x燃烧技术改造及性能优化试验

Retrofit with Low NO_x Combustion Technique and Performance Optimization Test for a 1 000-MW Ultra Supercritical Boiler

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1 000 MW超超临界锅炉低NOx 燃烧技术改造及性能优化试验

Retrofit with Low NOx Combustion Technique and Performance Optimization Test for a 1 000-MW Ultra Supercritical Boiler

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Retrofit with Low NO_x Combustion Technique and Performance Optimization Test for a 1 000-MW Ultra Supercritical Boiler