300MW机组锅炉频繁灭火原因分析及处理措施.pdfVIP

内蒙古 电力技 术 2013年第31卷第 1期 INNER M0NG0IlA ELECTRIC POWER 1O3 doi：10．3969j／．issn．1008—6218．2013．01．028 300MW机组锅炉频繁灭火原因分析及处理措施 张喜来 。杨星利 。董成波 (北方联合电力有限责任公司临河热电厂，内蒙古 巴彦淖尔 015000) 摘要：对临河热电厂2~300MW机组锅炉运行过程中频繁灭火的问题进行了分析，认为 存在实际燃用煤与设计煤种偏差较大，原煤为洗中煤，造成给煤机断煤、运行及检修人员对锅 炉的运行特性掌握不全面等问题。提出对锅炉进行燃烧调整、配煤掺烧，对二次风、炉膛差压 以及燃料风风门开度进行优化，加强对运行人员的技能培训，严格控制设备的检修周期等措 施。通过采取以上措施，锅炉燃烧稳定性得到了大幅提高，再未发生因锅炉燃烧 问题造成的 灭火事故。 关键词：锅炉灭火；炉膛 ／风箱差压；风门开度；配煤掺烧；二次风；燃料风 文献标志码：B 中图分类号：TM621．2 文章编号：1008—6218(2013)01—0103—03 CauseAnalysisof300MW UnitsBoilerFrequent Outfire and ItsTreatment ZhangXilai，YangXingli，DongChengbo (NoahUnitedPowerCo．，Ltd．，LinheThermalPowerPlant，InnerMongolia Bayannur 015000) Abstract：Through analysisof2x300MW unitsboilerfrequentoutfire in LinheThermal PowerPlant，theauthormade a conclusion thatthebig difference ofthe acutualcoaland the designed coal，the raw ofcoalmiddlings resuhed in coalfeeder interruptin，and the maintenance personnellack ofthe knowledge ofboileroperation charactoristics，were the maincauses．Thus，theauthorproposedtomakeboilercombustionadjustmentandblending burning，to optimize secondary air and furnace differential pressure as well as throttle openingofthefuelairdamper，to strengthen theskillstrainingofoperating personnel，and controlequipmentmaintenance cycle strictly．By taking these measures，boilercombustion stability has been improved substantially，accidents due to boiler combustion have not happened yet． Key words：boiler outfire； differential pressure of furnace／bellows； throttle opening； blending burning；secondary air；fuelwind 1 锅炉概况