Research progress of peaking technology for flexibility modification of pulverized coal boiler combustion system
LI Xuanda
DUAN Lu
JI Renshan
NIU Fang
Abstract：As the proportion of clean energy generation continues to rise,coal-fired power units are gradually transi-tioning into basic regulating power sources.The boiler is one of the three main parts of coal-fired power unit.It is the key equipment for realizing the speed and depth of peak shifting.This paper summarizes the flexible peaking policy and current situation of coal-fired power unit.The systematic analysis of the three key constraints(combustion stabili-ty,hydrodynamic safety and adaptability of auxiliary equipment)to enhance the flexibility of the boiler are dis-cussed,these three constraints can meet wide load regulation.On this basis,the feasible paths and technical meas-ures to improve combustion stability are discussed from three aspects including combustion operation mode,burner ar-rangement selection and intelligent detection and optimization algorithms.It can provide basic theoretical support and technical reference for achieving flexible regulation of power plant boilers.In the combustion operation mode,the key to improve the combustion performance is to optimize the combustion process control strategy,the ratio of combustion air and fuel volume was adjusted reasonably as well as to ensure the stability of the temperature in the furnace.In terms of burner arrangement selection,the goal of achieving flexible load changes is realized by improving the per-formance and adaptability of the burner.Economy and stability can be achieved by choosing the appropriate ignition method.In terms of intelligent detection and algorithm,real-time monitoring of boiler operating parameters is dee-ded,through data acquisition and analysis,the automatic regulation and early warning can be achieved,and the precise control of the combustion process can be achieved.
Keywords：pulverized coal boilercombustion systemspeaking depthcombustion stabilityhydrodynamic safe-tyauxiliary equipment adaptabilitycombustion operation modeburner arrangement selectionintelligent detec-tion and optimization algorithms
Publication Date：2024-11-10
Pages：13( 1-13 )