【摘要】 锅炉的启动方式对高温再热器的壁温有较大影响,试验发现:当锅炉冷态启动时,高温再热器的管壁温度较低;但锅炉热态启动时它的壁温较高。因此,单台磨煤机的给煤量不能增长过快,并尽量投用对称位置的磨煤机,防止高温再热器单侧管壁温度偏高。文中同时提出了再热器炉外运行测点温度极限值的计算方法,对再热器材质的选择和运行监视均具有一定的指导意义。更多还原

【Abstract】 The boiler’s start-up mode has great impact on the temperature of HT(high-temperature) reheater’s wall.The trials indicate that in the Cold start-up mode,the wall of HT reheater is at lower temperature level,but in the hot start-up mode,its wall temperature is higher.Therefore,the coal volume per mill can’t increase sharply,and the mills with symmetric should be located for in order to prevent unilateral wall temperature turning higher as far as possible.Synchronously,in the paper,a computational method of utmost temperature values is put forward involving the measuring points of the running reheater,which possesses certain guiding significance for choosing material and operating surveillance of the reheater.更多还原