Research on wear characteristics and operating characteristics of the platen heating surface of 350 MW supercritical CFB boiler
CHENG Wei
LYU Zhuo
WEI Yun-huan
WU Chao-gang
ZHOU Xu
XU Guo-hui
WEN Tao
Abstract：Taking the 350 MW supercritical circulating fluidized bed(CFB)series of boilers from Dongfang Boiler as the research object,the high-temperature screen-type heat transfer surface of the boiler is made of stainless steel sections with membrane structure and smooth tube structure.By measuring the wall thickness of the tubes and comparing the changes in the heat absorption of the boiler's heat transfer surfaces,the wear characteristics of different structural tube screens along the height direction of the furnace and the impact of using two structures on the heat absorption of the stainless steel sections of the heat transfer surfaces are studied.The results show that after two years of operation with the stainless steel section of the tube screen using the membrane structure,or after 5 000 hours of operation with the smooth tube structure,there are no obvious signs of wear,and when the stainless steel section of the tube screen successively uses the membrane structure and the smooth tube structure,its heat absorption does not significantly decrease,and the steam parameters at the tube screen outlet can still reach the design values.
Keywords：platen heating surfacestainless steelwear characteristics
Publication Date：2024-11-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 101-104 )