For 300 MWe electrical load, the optimal O2 concentration is 3.4% at outlet of economizer, and for 225 MWe electrical load, the optimal O2 concentration is 4.6%.

• 当机组负荷为300 MW时；省煤器出口的最佳氧量为3.；4%25左右; 当机组负荷为225 MW时；省煤器出口的最佳氧量为4