Abstract: With the increasingly strict emission standards for pollutants,to further leverage the low-cost advantage of circulating fluidized bed（CFB） pollutant control,it is necessary to clarify the impact of various operating parameters and factors on N₂O/NO_x/SO₂ emissions,and explore the possibility of N₂O/NO_x/SO₂ synergistic ultra-low emissions.Based on the requirements of the “14th Five Year Plan” and the research status of N₂O/NO_x/SO₂,a technology roadmap that may realize the coordinated reduction of N₂O/NO_x/SO₂ has been preliminarily formed:under the premise of ensuring the combustion efficiency,select appropriate bed materials（such as red mud） to remove N₂O in the furnace through catalysis or reaction,and achieve dual low emissions of N₂O and NO_x by balancing the proportion of aluminum and iron in red mud.At the same time,due to the good adsorption capacity and strong alkalinity of red mud,it can further achieve the removal of SO₂.If necessary,the remaining NO_x and SO₂ can be reduced to a reasonable level through flow state reconstruction or ultrafine limestone.The remaining NO_x and SO₂ also can be treated separately by SNCR and desulfurization tower,thereby achieving synergistic ultra-low emissions of N₂O/NO_x/SO₂.