Operation optimization of flue gas waste heat utilization system of 1 050 MW coal-fired unit based on EBSILON
ZHANG Wei
LI Shuhui
WANG Dongxue
LIU Honglin
WU Jie
CHEN Xun
Abstract：The EBSILON software is adopted to establish the performance model of the flue gas waste heat utilization system for 1 050 MW coal-fired units,and the single-factor sensitivity characteristics of the operation regulation parameters are obtained.Based on the genetic algorithm and considering the operating constraints,with the goal of minimizing the standard coal consumption rate,the optimization laws of the adjustment parameters under different environmental temperatures are obtained.The results show that increasing the bypass flue gas diversion coefficient and the working medium flow rate of the bypass low-pressure economizer will increase the thermal economy,but reduce the safety.Increasing the circulating water volume of the low-temperature economizer has a relatively small impact on thermal economy,but the safety of the heating surface is significantly improved.When multi-parameter collaborative optimization is carried out,as the ambient temperature rises,the optimal bypass flue gas flow rate,the bypass high-pressure economizer,and the bypass low-pressure economizer diversion coefficient all increase.The energy-saving benefits of the waste heat utilization system are improved.Compared with the original operation mode,the coal-saving rate has increased by approximately 0.71 g/kWh at most.
Keywords：coal-fired unitwaste heat recoveryEBSILON softwaresingle factor analysismulti-parameter optimization
Publication Date：2025-04-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 46-51 )