Fuzzy Comprehensive Evaluation on Combustion Stability and Economy of a Power Plant Boiler Based on Furnace Parameters Measurement

The effects of furnace parameters on combustion stability and economy of a boiler were analyzed. A new comprehensive method for evaluating the boiler combustion stability and economy was presented from three aspects, i.e. furnace temperature, O₂ volume fraction and CO mass concentration. Taking a 680 MW coal-fired boiler as an example, fuzzy comprehensive evaluation of the boiler combustion stability and economy was carried out based on furnace parameters measurement. Results show that the evaluation of boiler combustion stability and economy can be effectively completed by the method proposed under different working conditions.