Supercritical Boiler Combustion Optimization Method Research And Application

How to make burning boiler safe and efficient for the economy, the problem is very complicated, but also of great significance, thermal engineering experts have been constantly exploring this issue. To measure the economy of the boiler, usually through the boiler thermal efficiency to reflect. At present, the boiler thermal efficiency is not high, the thermal energy waste more, one of the key reasons is that a lot of boiler operation in technical indicators, economic arguments do not achieve the best value, for example, the thermal efficiency of the boiler flue gas temperature have a significant impact , flue gas oxygen content and other parameters, did not reach the optimal control.In this paper, boiler combustion control system to do a thorough study, changes in oxygen content in the flue gas under the premise of his analysis run-time power plant burning conditions change Boilermakers economic approach to derive the thermal calculation of boiler partial economic indicators derivative of the formula, as well as micro-increment formula. Through this paper, based on changes in the boiler flue gas oxygen content of the thermal characteristics of the dynamic changes in economic parameters of the model, combined with the lowest rate of the best coal gas supply oxygen partial differential equations, you can calculate the power plant boiler conditions change, the optimal under different load conditions the flue gas oxygen content settings. Finally, using the proposed method and the derivation of the formula calculation example. Power plant with a load of 600MW supercritical boiler turbine calculations. This case the best results illustrate the use of flue gas oxygen content regulation as a standard boiler combustion optimization system, which can effectively improve the thermal efficiency of the unit, to improve the energy efficiency of the boiler combustion and reduce coal consumption.