分析了姚孟电厂 1 0 0 0 t/h锅炉排烟温度、飞灰含碳量偏高的原因 ,提出了相应的改造方案 ,并用数值计算的方法模拟了改造前后的炉内流场 ,认为变化不大。改造后排烟温度降低了 1 5.1°C,飞灰含碳量从原来的 8.6%降低到 3 .4 %左右 ,机械不完全燃烧损失降低 3 %以上。图 5表 4 The reasons of the high exhaust gas temperature and the high carbon content of fly ash were analyzed at the 1 000 t / h boiler in Yao-Meng Power Plant. Corresponding retrofitting schemes were put forward and numerical simulations were carried out to simulate the flow field in the furnace before and after retrofitting. Has not changed much. After retrofitting, the exhaust gas temperature was reduced by 5.11 ° C, the fly ash carbon content was reduced from 8.6% to about 3.4%, and the mechanical incomplete combustion loss was reduced by more than 3%. Figure 5 Table 4