摘要
针对超超临界二次再热锅炉炉膛校核热力计算,以前苏联1973年热力计算标准中分区计算方法为基础,通过结合煤粉燃烧一维阻塞流模型,提出了一种新的分区段——一维炉膛换热计算模型。该模型形式简单、使用方便,不仅可以得到沿炉膛高度方向烟气平均温度分布和区段水冷壁热负荷,而且还可以获得飞灰含碳量。以某660MW超超临界二次再热锅炉为例,进行了炉膛传热热力计算。结果表明:与标准方法中的零维模型相比,该文所提出方法的计算结果与实际测量值之间的误差较小,可为超超临界二次再热锅炉炉膛传热计算提供参考。
Focusing on furnace thermal check calculation in a ultra-supercritical double-reheat boiler,a new one dimension furnace heat transfer model by dividing furnace into many sections was proposed,basing on combing sections calculating method of the former Soviet Union boiler unit heating calculation standard methods and blocking flow model of coal combustion.The model has the advantage of simple form and easy to use.And not only the heat load of water wall and average temperature of flue gas,but also the carbon content of fly ash can be gained by using the model.In order to verify the model a furnace heat transfer calculation in a 660 MW ultra-supercritical double-reheat boiler was carried out.The results show that the calculation results of the proposed model is more consistent with the experimental results when comparing with the standard method.So the proposed model can offers a relatively important reference for the furnace heat transfer in ultra-supercritical double-reheat boiler.
作者
李皓宇
刘彦鹏
高智溥
LI Haoyu;LIU Yanpeng;GAO Zhipu(Institute of Thermal Power Generation Technology,China Datang Corporation Science and Technological Research Institute,Shijingshan District,Beijing 100140,China;China Datang Corporation,Xicheng District,Beijing 100032,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第S01期180-185,共6页
Proceedings of the CSEE
关键词
超超临界二次再热锅炉
一维模型
煤燃烧模型
炉膛传热计算
ultra-supercritical double-reheat boiler
one dimension model
coal combustion model
furnace heat transfer calculation
