Research on flexibility transformation of 350 MW supercritical CFB unit
LI Shou-jun
SHANG Man-xia
YANG Xue-bao
HE Chun
HUANG Zhong
Abstract：In order to fully utilize the deep peak shaving capacity of thermal power units,comprehensively improve the peak shaving and new energy consumption capacity of the power system,and strive to achieve the dual-carbon goal,it is imperative to carry out the flexibility transformation of thermal power units.The research focuses on the 350 MW supercritical circulating fluidized bed boiler,addressing issues such as insufficient hydrodynamic force,overheating of heating surfaces,and excessive NOx emissions during deep peak shaving.Combining practical production experience,a reform scheme for the steam-water system's Boiler Circulating Pump(BCP)and the coupling of flue gas recirculation with high-penetration secondary air Selective Non-Catalytic Reduction(SNCR)denitration technology is proposed.The results indicate that through the transformation of the BCP system and flue gas recirculation,stable operation of the unit can be achieved at 20%of the rated load,with favorable economic benefits.
Keywords：deep peak shavingflexibility transformationboiler water circulating pump systemflue gas recirculation
Publication Date：2023-12-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )