国产首台600MW超临界复合循环锅炉调试.DOC

世界首台600MW超临界W型火焰无烟煤锅炉调试技术与实践 The Practice and analysis of Commissioning on a W-shaped Flame Boiler burned Anthracite Coal of a 600 MW Supercritical Unit 黄 伟 李文军 张建玲 彭 敏 熊蔚立 谢国胜 HUANG Wei, LI Wen-jun, ZHANG Jian-ling, PENG Min, XIONG Wei-li, XIE Guo-sheng 湖南省电力公司试验研究院，湖南 长沙市410007 Hunan Electric Power Test and Research Institute, Changsha 410007, P.R.China 【摘 要】介绍了世界首台大唐华银金竹山火力发电分公司（简称“金竹山电厂”）600MW超临界W型火焰无烟煤锅炉的设计特性、主要系统，以及调试过程。调试中采用稳压和降压相结合的吹管工艺，提出了劣质无烟煤燃烧技术和锅炉干湿态转换判据，确定了锅炉干湿态转换点、锅炉亚超临界超临界haracteristics, main system components, and the commissioning processes of a 1900t/h W-shaped flame super-critical boiler fired anthracite coal in Jinzhushan Power Plant. During the steam purging process, the dropping-pressure and stable-pressure methods were joined successfully. Criterions to determine the transformation point of recirculation mode to once-through mode were put forward; also the parameters at the turning poet, such as the load and the separator pressure were determined. The design defects and operation problems were also discussed in the paper. The commissioning practice is beneficial to the further development and application of the same type boilers. 【关键词】 600MW超临界机组；W火焰锅炉；无烟煤； 调试；金竹山电厂 Keywords: 600MW Supercritical unit；W-flame boiler；anthracite coal； Commissioning；Jinzhushan Power Plant  0 引言 金竹山电厂二期扩建工程1×600MW机组3号锅炉，是世界上首台燃用无烟煤的W型火焰并首次采用低质量流速垂直水冷壁炉膛的超临界锅炉。2009年5月开始锅炉机组调试，在很短时间内锅炉就达到良好水平，既保证锅炉设备安全，又达到了较高的燃烧效率。600MW超临界W火焰无烟煤锅炉燃烧技术应用有效地解决了无烟煤、贫煤难于燃烧的问题，有利于建设资源节约型、环境友好型社会，也将为我国电力工业的发展做出贡献。 锅炉概述 金竹山电厂3号锅炉系北京巴布科克·威尔科克斯有限公司生产的BWB-1900/25.4-M型超临界参数变压直流本生锅炉表1 锅炉主要设计及168h运行参数 项目 MCR ECR 168h试运 电负荷/MW 660 600 601 主蒸汽流量 1900 1677 1710 主蒸汽温度 571 571 571 主蒸汽压力 25.4 25.11 25.0 再热蒸汽出进口温度 320/569 308.1/569 308 /571 再热蒸汽出进口压力 4.632/4.442 4.119/3.952 4.1/3.98 再热蒸汽流量 1613 1433 1450 给水温度/℃ 283 275 275 排烟温度（修正后）/℃ 125 124 125.5 表2 设计煤种及168h运行煤种特性 Car/% Har/% Oar/% Nar/% Sar/% Aar/% Mt/% Vdaf/% Qnet.v/ kJ/kg 设计煤种 49.6 1.71 1.53 0.58 1.2 35.9