超超临界垂直管屏直流锅炉无炉水泵启动实践
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摘要
超超临界直流锅炉一般配备有炉水循环泵,当其因故障无法投入时,锅炉启动过程会存在水动力失调、水冷壁超温等风险。垂直管屏水冷壁锅炉由于给水流量的分配条件更差,启动操作将更加困难。通过精确控制燃料量、给水量、补排水量,并辅以邻炉加热和多项检修措施,完成了垂直管屏超超临界直流锅炉无炉水泵启动,为机组灵活运行带来全新途径。这次启动前的组织准备、启动过程的风险控制和启动后的延伸探讨等方面均有突破和创新,可为同类型机组作参考。
Ultra-supercritical once-through boiler is generally equipped with circulating pump. In case of pump breakdown, hydrodynamics disorder and water wall overtemperature occur during the boiler startup.The startup operation is more difficult because of the poor distribution conditions of water flow in vertical tube water wall boiler. By precise control of fuel, feedwater, water supply and drainage as well as neighboring furnace heating and multiple maintenance measures, the startup of vertical tube ultra-supercritical boiler without circulating pump is finished, which is a new way of flexible operation. There are breakthroughs and innovations in preparation before startup, risk control in startup and discussion after startup, which provides reference for the same units.
Ultra-supercritical once-through boiler is generally equipped with circulating pump. In case of pump breakdown, hydrodynamics disorder and water wall overtemperature occur during the boiler startup.The startup operation is more difficult because of the poor distribution conditions of water flow in vertical tube water wall boiler. By precise control of fuel, feedwater, water supply and drainage as well as neighboring furnace heating and multiple maintenance measures, the startup of vertical tube ultra-supercritical boiler without circulating pump is finished, which is a new way of flexible operation. There are breakthroughs and innovations in preparation before startup, risk control in startup and discussion after startup, which provides reference for the same units.
引文
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[4]陈端雨,何翔,杨勇,等.超临界压力塔式直流锅炉螺旋管圈水冷壁吸热偏差的试验研究[J].动力工程学报,2012,32(8):581-585.
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[7]黄伟,李文军,宾谊沅,等.600 MW超临界对冲锅炉机组炉水循环泵解列运行启动技术及实践[J].电站系统工程,2010,26(3):9-11.
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[10]杨宝锷,林鸿,冯庭有,等.3 033 t/h超超临界锅炉无炉水泵启动应用探索[J].中国电力,2013,46(2):36-39.
[11]崔强,张兰英.超临界锅炉无循环泵启动[J].锅炉制造,2011,42(2):26-28.
[12]王希寰.600 MW超临界W型锅炉无炉水循环泵启动特性分析[J].湖南电力,2013,33(S2):46-48.
[13]于松强,雷利,邵瀚青,等.无炉水循环泵1 215 t/h超临界CFB锅炉启动参数控制[J].节能技术,2017,35(2):113-116.
[14]陈铭,张海军,刘晓东.燃煤电厂全负荷脱硝技术的应用[J].广东电力,2017,30(9):22-27.
[15]赵峰,周红梅,宁罡.不带炉水循环泵直流炉增加冷凝水箱至除氧器管道的结构改进[J].电站系统工程,2012,28(4):49-50.
[2]张伟,宁献武,王磊.1 000 MW超超临界机组干、湿态转换过程及风险控制[J].东北电力技术,2009,30(7):19-21.
[3]樊晋元,陈鸿伟.超超临界锅炉变压运行水冷壁的传热特性[J].锅炉技术,2016,47(3):12-16.
[4]陈端雨,何翔,杨勇,等.超临界压力塔式直流锅炉螺旋管圈水冷壁吸热偏差的试验研究[J].动力工程学报,2012,32(8):581-585.
[5]袁远望.国产1 000 MW超超临界压力直流锅炉启动过程中汽水分离器水位的控制[J].广东电力,2009,22(8):65-67.
[6]马晓珑,王军.超(超)临界火电机组取消炉水循环泵的可行性研究[J].东方电气评论,2010,24(2):17-20.
[7]黄伟,李文军,宾谊沅,等.600 MW超临界对冲锅炉机组炉水循环泵解列运行启动技术及实践[J].电站系统工程,2010,26(3):9-11.
[8]朱蛟龙,刘超.国内某电厂600 MW超临界机组无炉水循环泵启动方案[J].锅炉制造,2015,46(3):19-20.
[9]武豫新,李世杰.660 MW超超临界机组无炉水循环泵启动方案及分析[J].电力建设,2011,32(1):83-85.
[10]杨宝锷,林鸿,冯庭有,等.3 033 t/h超超临界锅炉无炉水泵启动应用探索[J].中国电力,2013,46(2):36-39.
[11]崔强,张兰英.超临界锅炉无循环泵启动[J].锅炉制造,2011,42(2):26-28.
[12]王希寰.600 MW超临界W型锅炉无炉水循环泵启动特性分析[J].湖南电力,2013,33(S2):46-48.
[13]于松强,雷利,邵瀚青,等.无炉水循环泵1 215 t/h超临界CFB锅炉启动参数控制[J].节能技术,2017,35(2):113-116.
[14]陈铭,张海军,刘晓东.燃煤电厂全负荷脱硝技术的应用[J].广东电力,2017,30(9):22-27.
[15]赵峰,周红梅,宁罡.不带炉水循环泵直流炉增加冷凝水箱至除氧器管道的结构改进[J].电站系统工程,2012,28(4):49-50.