Determine the reason for the lower temperature in the superheated steam through normal thermal calculate in hearth and put forward the reconstructive method of burning system include decrease the combustion round and increase the tilt angle of the burner tip. 通过炉膛热力校核计算确定攀枝花电厂锅炉主汽温度偏低的原因,并提出燃烧系统改造方案。