In order to accelerate the achievement of the goals of “carbon peaking” and “carbon neutrality”

a series of laws

regulations

and institutional documents on greenhouse gas control have been introduced by the country

local governments

and industries. Nitrous oxide(N_2O)

as a gas with strong greenhouse effects

has attracted increasing attention from researchers. This article summarizes the current research status of N_2O at home and abroad

compares the N_2O emissions of typical coal-fired boilers

analyzes the generation mechanism

influencing factors

suppression methods

and removal methods of N_2O during the combustion process

explores N_2O emission reduction strategies for coal-fired boilers

and provides suggestions. It is necessary to strengthen the formulation of N_2O related standards

research and development of new technologies

and demonstration applications for coalfired boilers. Further research is needed on the influencing factors of N_2O

such as pressurized oxygen enrichment conditions and coal moisture content

to further improve the suppression and removal methods.