国产首台600MW超临界墙式对冲褐煤锅炉的运行特性研究.docVIP

国产首台600MW超临界墙式对冲 褐煤锅炉的运行特性研究 Operating characteristics study of the first domestic 600MW supercritical wall-fired lignite boiler 狄万丰1 韩继伟2 杨忠灿3 宋大勇4 (Di Wanfeng1, Han Jiwei2 ,Yang Zhongcan3 ,Song Dayong3 ) （1.辽宁清河发电有限责任公司，辽宁 铁岭，200233； 2.中电投电力工程有限公司，上海，112000； 3.西安热工研究院，陕西 西安，710032 4.东北电力科学研究院，辽宁 沈阳，110006） (1. Liaoning Qinghe Power Generation Co. Ltd., Liaoning Tieling, 112000; 2. China Power Investment Power Engineering Co., Ltd., Liaoning Tieling, 112000; 3. Xian Thermal Power Research Institute, Xian, 710032 3. Electric Power Research Institute Co,Ltd, Liaoning shenyang,110006) 摘 要：辽宁清河发电有限责任公司9号机组锅炉是哈尔滨锅炉厂引进英国MITSUI BABCOCK公司技术设计制造的国产首台超临界、采用前后墙对冲燃烧方式和低NOX轴向旋流燃烧器的600MW褐煤锅炉。机组整套试运初期，曾出现锅炉结焦严重、排烟温度偏高、再热器事故喷水量大甚至再热蒸汽温度超温等问题，机组带负荷能力仅为500MW左右。经过采取增大燃烧器内二次风量、调低煤粉细度、合理组织炉内配风、降低中间点温度、增加吹灰器投运频率等Abstract：No. 9 Boiler of Liaoning Qinghe Power Plant is the first domestic supercritical, wall-fired 600MW lignite boiler with low NOx combustion axial swirl burners made from the UK MITSUI BABCOCK companys technology. During the trial operation of the No. 9 Unit, there have serious coking, high exhaust gas temperature, large reheater spraying water and excessive reheater steam temperature and so on, and the boiler load capacity is only 500MW unit around. After taking the methods such as increasing flow of the inner secondary air, lowering fineness of pulverized coal and rationalizing air organization, lowering intermediate point temperature and increasing operating frequency of soot blowers, the above mentioned issues are effectively resolved, and the Unit passed the 168hours of trial operations smoothly. This article can be usefully referred to lignite boiler s ‘further development. Key words：The first unit; supercritical; lignite boiler; wall-fired type; swirl burner; operating characteristics1锅炉设备概述 辽宁清河发电有限责任公司9号锅炉型号HG-1900/25.4-HM2，为一次中间再热、单炉膛、平衡通风、变压运行带内置式再循环泵启动系统的本生直流炉，采用固态排渣、全钢架悬吊结构型布置NOX轴向旋流燃烧器前、后墙对冲布置，前墙层每层各有只只吹灰器、只长伸缩式吹灰器，只空气预热器吹灰器。除渣采用刮板式捞渣机，装于冷灰斗下部。炉膛容积热负荷W