黄鉴,黄显生,刘忠轩
HUANG Jian,HUANG Xiansheng,LIU Zhongxuan

• 1:中电华创电力技术研究有限公司
• 2:四川中电福溪电力开发有限公司

摘要(Abstract)：

某发电厂600 MW超临界W火焰锅炉长期存在严重的水冷壁壁温偏差，机组被迫降参数运行。对上、下水冷壁出口壁温与设计参数对比分析，发现该炉上水冷壁热偏差情况严重，前墙壁温偏差主要在上炉膛产生，水冷壁出口壁温不均导致的热效流动偏差使前墙壁温情况恶化。为提高炉膛热负荷分布均匀性，根据当前存煤情况对磨煤机配煤进行优化，高低热值混煤仓掺配比例根据局部壁温情况进行调节。由于当前采用的“前墙压后墙”F风配风方式对侧墙水冷壁吸热产生负面影响，因此关小后墙靠两侧墙二次风门开度，改善两侧墙吸热情况。调整后前墙壁温差减小，主汽温度提升，达到预期效果。
Due to the sharp and long-term water wall temperature deviations in a 600 MW supercritical W-flame boiler in a power plant, the units had to operate with reduced parameters. A comparison of the temperature of the upper and lower water walls with the design parameters revealed that: the thermal deviation of the upper water wall of the furnace was severe; the deviation of the front wall temperature was mainly generated in the upper chamber; the uneven outlet wall temperature that led to the deviation of the thermal efficiency flow aggravated the front wall temperature. In order to improve the evenness of the heat load distribution in the furnace, the coal distribution of the coal mill was optimized according to the current coal storage, and the blending ratio of the high and low calorific value blending bunkers was adjusted according to the local wall temperature. In view of the existing “front wall pressing back wall”, the F-layer secondary air distribution had a negative impact on the heat absorption of the water walls on the side walls. Therefore, the opening of the secondary dampers on the back wall against both walls was reduced to improve the heat absorption of both walls. After the adjustment, the temperature difference of the front walls was reduced, the main steam temperature increased, and the desired effect was achieved.

关键词(KeyWords)： W火焰锅炉;水冷壁;壁温偏差;配煤优化;二次风优化
W-flame boiler;water wall;wall temperature deviation;coal blending optimization;secondary air optimization

Abstract:

Keywords:

基金项目(Foundation): 国家电力投资集团有限公司科技项目（ZDHC-JY-20191110）

作者(Author): 黄鉴,黄显生,刘忠轩
HUANG Jian,HUANG Xiansheng,LIU Zhongxuan

DOI: 10.19585/j.zjdl.202302013

参考文献(References)：

• [1]车刚，郝卫东，郭玉泉.W型火焰锅炉及其应用现状[J].电站系统工程，2004,20(1):38-40.CHE Gang,HAO Weidong,GUO Yuquan.W-shape flame boiler and its application[J].Power System Engineering,2004,20(1):38-40.
• [2]王忠会，孟建刚.我国发展超临界“W”火焰锅炉状况的分析[J].电力建设，2007,28(9):65-69.WANG Zhonghui,MENG Jiangang.Analysis of development status of supercritical W-shaped flame boiler in China[J].Electric Power Construction,2007,28(9):65-69.
• [3]马达夫，周文台，张守玉，等.超临界W火焰锅炉水冷壁壁温及炉膛壁面热负荷特性研究[J].洁净煤技术，2020,26(3):161-168.MA Dafu,ZHOU Wentai,ZHANG Shouyu,et al.Characteristics research of water wall temperature and furnace wall thermal load of supercritical W-flame boiler[J].Clean Coal Technology,2020,26(3):161-168.
• [4]周文台，程智海，金鑫，等.600 MW超临界W火焰锅炉防超温燃烧调整试验研究[J].动力工程学报，2013,33(10):753-758.ZHOU Wentai,CHENG Zhihai,JIN Xin,et al.Combustion adjustment tests for preventing overheating problems in a 600 MW supercritical W-flame boiler[J]. Journal of Chinese Society of Power Engineering,2013,33(10):753-758.
• [5]黄丹，曾小义，杨建军，等.超临界W火焰锅炉水冷壁管频繁拉裂泄漏事故原因分析[J].热加工工艺，2022,51(15):150-154.HUANG Dan,ZENG Xiaoyi,YANG Jianjun,et al.Analysis on causes of frequent rupture and leakage of water wall pipe of supercritical W flame boiler[J].Hot Working Technology,2022,51(15):150-154.
• [6]吴智，王廷钦.600 MW超临界“W”火焰锅炉冷灰斗水冷壁大面积泄漏原因分析[J].贵州电力技术，2013,16(11):7-9.WU Zhi,WANG Tingqin.Analysis on the causes of watercooled hopper bottom and water wall large area leakage in600 MW supercritical W-flame boiler[J].Guizhou Electric Power Technology,2013,16(11):7-9.
• [7]刘宜兵，黄鉴，朱雷，等.超超临界锅炉垂直水冷壁热偏差监测系统的应用[J].锅炉技术，2020,51(1):10-14.LIU Yibing,HUANG Jian,ZHU Lei,et al.Application of thermal deviation monitoring system for vertical water wall of ultra supercritical boiler[J]. Boiler Technology,2020,51(1):10-14.
• [8]杨冬，于辉，华洪渊，等.超（超）临界垂直管圈锅炉水冷壁流量分配及壁温计算[J].中国电机工程学报，2008,28(17):32-38.YANG Dong,YU Hui,HUA Hongyuan,et al.Numerical computation on the mass flow rate profile and metal temperature in vertical water wall of an ultra supercritical boiler[J].Proceedings of the CSEE,2008,28(17):32-38.
• [9]滕敏华，胡卿，万李，等.1 000 MW宽负荷超超临界机组锅炉水动力特性计算及分析[J].热力发电，2019,48(4):60-67.TENG Minhua,HU Qing,WAN Li,et al.Calculation and analysis on hydrodynamic characteristics of an ultrasupercritical unit boiler with 1 000 MW broad regulation load[J].Thermal Power Generation,2019,48(4):60-67.
• [10]周强泰.锅炉原理[M].3版.北京：中国电力出版社，2013.
• [11]周文台，杨勇.超临界压力W火焰锅炉运行方式对炉内热负荷影响的试验研究[J].动力工程学报，2016,36(4):253-257.ZHOU Wentai,YANG Yong. Effects of operation mode on heat load distribution in a supercritical pressure Wflame boiler[J].Journal of Chinese Society of Power Engineering,2016,36(4):253-257.
• [12]张大龙，蒙晨玮，朱余乐，等.燃烧无烟煤的W火焰锅炉热流密度分布的数值模拟[J].煤炭学报，2016,41(10):2495-2502.ZHANG Dalong,MENG Chenwei,ZHU Yule,et al.Numerical simulation of the heat flux distribution of water wall of an anthracite coal fired arch-fired boiler[J].Journal of China Coal Society,2016,41(10):2495-2502.
• [13]吕当振，周延华，刘帅，等.600 MW超临界W火焰锅炉垂直水冷壁壁温分布特性及偏差控制[J].中国电机工程学报，2019,39(11):3312-3320.LüDangzhen,ZHOU Yanhua,LIU Shuai,et al.Study on distribution characteristics and deviation control of vertical membrane waterwall temperature of a 600 MW subcritical down-fired boiler[J].Proceedings of the CSEE,2019,39(11):3312-3320.
• [14]唐道建，谢志文，刘瑞东，等.600 MW超临界W火焰锅炉前墙上炉膛水冷壁撕裂原因分析及处理[J].动力工程学报，2015,35(12):949-955.TANG Daojian,XIE Zhiwen,LIU Ruidong,et al.Cause analysis and treatment of crack failures on upper part of front wall in a 600 MW supercritical W-flame boiler[J].Journal of Chinese Society of Power Engineering,2015,35(12):949-955.
• [15]顾彤，陈锋.350 MW机组锅炉两侧二次风量不平衡的原因分析及对策[J].锅炉技术，2006,37(3):53-55.GU Tong,CHEN Feng.Analysis of the secondary air flow imbalance of boiler two sides for 350 MW unit and its countermeasures[J].Boiler Technology,2006,37(3):53-55.
• [16]张锋，李雯，贾波，等.直缝式燃烧器W火焰锅炉新型二次风箱特性研究[J].洁净煤技术，2017,23(5):111-118.ZHANG Feng,LI Wen,JIA Bo,et al. Characteristic research of a new type of secondary-air-box on a W-flame boiler with slit type burner[J]. Clean Coal Technology,2017,23(5):111-118.
• [17]徐鹏志，刘鹏远，高佳佳，等.狭缝式W火焰锅炉翼墙上部结渣原因分析及消除[J].发电技术，2018,39(2):146-152.XU Pengzhi,LIU Pengyuan,GAO Jiajia,et al. Analysis and elimination of the cause of furnace slagging in a supercritical slit type burner W-flame boiler[J].Power Generation Technology,2018,39(2):146-152.
• [18]李强.锅炉水冷壁高温腐蚀原因分析及解决措施[J].山东电力技术，2019,46(9):57-60.LI Qiang.Causes analysis of high-temperature corrosion of boiler water walls and solving measures[J]. Shandong Electric Power,2019,46(9):57-60.
• [19]蔡勇，张兴龙，孙金龙.超超临界锅炉水冷壁高温腐蚀原因分析与防治[J].山东电力技术，2021,48(7):64-69.CAI Yong,ZHANG Xinglong,SUN Jinlong.Cause analysis and prevention of high temperature corrosion of water wall of ultra supercritical boiler[J]. Shandong Electric Power,2021,48(7):64-69.
• [20]龚超，刘宇钢，易泽中，等.燃高硫无烟煤超超临界W火焰锅炉受热面高温腐蚀应对措施[J].山东电力技术，2022,49(1):65-69.GONG Chao,LIU Yugang,YI Zezhong,et al. Countermeasures for high temperature corrosion of ultra supercritical W-flame boiler burning high sulfur anthracite[J].Shandong Electric Power,2022,49(1):65-69.