超超临界1000MW机组双切圆锅炉主再热汽温提升方法研究  

Research on main and reheat steam temperature lifting method for ultra supercritical 1000 MW unit double-tangential circular boiler

作　　者：胡庆伟 苏胜[2] 向军[2] 崔晓宁 HU Qingwei;SU Sheng;XIANG Jun;CUI Xiaoning(Datang Sanmenxia Power Generation Co.,Ltd.,Sanmenxia 472143,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]大唐三门峡发电有限责任公司,河南三门峡472143 [2]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《热力发电》2020年第3期107-112,共6页Thermal Power Generation

基　　金：国家重点研发计划资助项目(2017YFB0601802)。

摘　　要：本文以某超超临界1000 MW机组双切圆燃烧锅炉为研究对象,通过理论分析及模拟计算,分析了制约汽温提升的主要因素和受热面热偏差规律,针对不同的受热面提出了汽温提升方法。实际应用结果表明,按照本文提出的汽温提升方案改造后,机组的主蒸汽温度提升约15℃,再热蒸汽温度提升约13℃,供电煤耗降低约2.5 g/(kW·h),达到了预期效果,实现了机组安全与经济运行。The double-tangential combustion boiler in an ultra supercritical 1000 MW unit is studied by theoretical analysis and simulation calculation.The main factors that restricting the steam temperature improvement and causing the thermal deviation of the heated surface of the boiler are analyzed,and the methods for steam temperature improvement of different heating surfaces are proposed.The actual application results indicate that,after transformation using the steam temperature improvement scheme proposed by this paper,the main steam and reheat steam temperature of the unit increased by about 15℃and 13℃,respectively,and the coal consumption reduced by about 2.5 g/(kW·h),which achieved the expected effect.The safety and economic operation of the unit has been obtained.

关 键 词：1000MW机组 双切圆燃烧 锅炉 受热面 蒸汽温度 提升方法 数值模拟 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]