Research on optimization of denitrification flow field in gas turbine waste heat boiler based on CFD simulation
HE Fuquan
ZHANG Lei
YANG Hao
LI Yanfeng
LI Wei
Abstract：Focusing on the'two to one'gas steam combined cycle cogeneration unit of a certain gas-fired thermal power plant,investigating the uniformity of the flue gas flow field in the selective catalytic reduction(SCR)denitrification system of the waste heat boiler,and using computational fluid dynamics(CFD)methods,exploring the control effect of adding a guide plate group on the flue gas flow field.The results show that the guide plate group can guide the direction of flue gas flow,weaken local vortices,and significantly optimize the uniformity of the flue gas flow field.When no guide plate group is added to the key section upstream of the catalyst,the coefficient of non-uniformity(Cv)of flue gas velocity distribution is 30.35%,indicating the problem of local flow velocity being too high or too low.After adding a guide plate group and optimizing its angle,spacing,and arrangement position,the Cv of the section decreased to 14.62%,and the uniformity of the flow field is improved by over 50%.
Keywords：SCRflow field optimizationwaste heat boilernumerical simulation
Publication Date：2026-02-25
Online Publishing Date：2026-03-31(First online date of this platform, not the publication date of the document)
Pages：5( 72-76 )