热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
10期
51-57
,共7页
超超临界%600 MW 机组%墙式切圆%锅炉%燃烧特性%数值模拟
超超臨界%600 MW 機組%牆式切圓%鍋爐%燃燒特性%數值模擬
초초림계%600 MW 궤조%장식절원%과로%연소특성%수치모의
ultra supercritical%600 MW unit%wall type%tangentially firing%boiler%combustion characteris-tics%numerical simulation
为了进一步了解超超临界600 MW 机组墙式切圆锅炉的燃烧状态，对该锅炉满负荷时特征截面上的温度分布、O2和 CO 的摩尔浓度分布等进行了模拟计算。由模拟结果与试验结果的对比分析可以看出，模拟结果的过量空气系数与设计值吻合较好，下炉膛出口烟温略高于设计值，未燃尽碳损失略低于设计值，但能够真实地反映锅炉的燃烧状态，可为该类型锅炉的设计改造提供参考。
為瞭進一步瞭解超超臨界600 MW 機組牆式切圓鍋爐的燃燒狀態，對該鍋爐滿負荷時特徵截麵上的溫度分佈、O2和 CO 的摩爾濃度分佈等進行瞭模擬計算。由模擬結果與試驗結果的對比分析可以看齣，模擬結果的過量空氣繫數與設計值吻閤較好，下爐膛齣口煙溫略高于設計值，未燃儘碳損失略低于設計值，但能夠真實地反映鍋爐的燃燒狀態，可為該類型鍋爐的設計改造提供參攷。
위료진일보료해초초림계600 MW 궤조장식절원과로적연소상태，대해과로만부하시특정절면상적온도분포、O2화 CO 적마이농도분포등진행료모의계산。유모의결과여시험결과적대비분석가이간출，모의결과적과량공기계수여설계치문합교호，하로당출구연온략고우설계치，미연진탄손실략저우설계치，단능구진실지반영과로적연소상태，가위해류형과로적설계개조제공삼고。
In order to further investigate the combustion characteristics of an ultra supercritical 600 MW u-nit wall type tangentially fired boiler,the flow property in the furnace under full load condition was numer-ically studied at first.The distributions of temperature and molar concentration of O2 and CO in character-istic section of the boiler were mainly analyzed.Then,combined with the flow property,numerical simula-tion on combustion characteristics in the furnace under full load condition was carried out.Comparison be-tween the simulated results and experimental data shows the simulation results can describe the combus-tion features of this boiler accurately.
