600MW机组锅炉温度偏差特性的研究  

Study on Temperature Deviation Characteristics in Boiler of 600MW Unit

作　　者：李宽 郑媛[2] 赵星海[3] 辛国华[4] 

机构地区：[1]吉林省电力有限公司电力科学研究院 [2]吉林农业工程职业技术学院 [3]东北电力大学 [4]吉林工业职业技术学院

出　　处：《电站系统工程》2012年第5期37-38,40,共3页Power System Engineering

摘　　要：某电厂600 MW机组切圆燃烧锅炉的温度偏差一直困扰着该机组的安全运行,为研究该锅炉温度偏差的特性,以此锅炉为研究对象,根据其结构、设计和运行参数,利用数值计算软件对炉内流动、传热和燃烧过程进行了三维数值模拟。研究表明,该锅炉炉内的高温区仍集中在炉膛中部,温度的整体分布趋势未变,只要保证温度分布不出现大的偏差,对炉膛的水冷壁是安全的。炉内的温度偏差与速度偏差存在正相关,烟气的残余旋转对炉内的温度分布存在一定的影响。炉膛出口温度分布不仅存在左右温度偏差,也存在上下温度偏差,且高温区集中在水平烟道中上部。The temperature deviation of tangentially fired boiler has plagued safety operation of the 600MW unit in a power plant, in order to study the temperature deviation characteristics in the boiler, the tangentially fired boiler was taken as the study object, three-dimensional numerical simulation on the flow, heat transfer and combustion processes in furnace was done with numerical calculation software according to its structure, design and operation parameters. The results show that the high temperature area is concentrated in the center in furnace, the integral distribution trend of temperature has not changed, as long as the temperature distribution does not appear obvious deviation, the water wall is safe. The temperature deviation are positively correlated to velocity deviation in furnace, the residual rotation of flue gas has some influences on temperature distribution in furnace. The temperature distribution in furnace outlet not only exists the left and right temperature deviation, but also exists upper and lower temperature deviation, and the high temperature area is concentrated in middle-upper part in the horizontal flue.

关 键 词：切圆燃烧 数值模拟 温度偏差 速度偏差 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]