Application of regenerated SCR catalysts in optimization and transformation of flue gas denitration
In response to the needs of flue gas denitration process optimization and transformation in coal-fired power plants,the deactivated SCR catalysts of the target coal-fired power plant are taken as the research object,and the regeneration experiment is carried out by using the acid washing method.With the denitration efficiency as the evaluation index,the influence of different experimental parameters on the denitration efficiency of the regenerated SCR catalysts is investigated.The experimental results show that when the concentration of sulfuric acid solution is 0.5 mol/L and the pickling time is 30 min,the activity of regenerated SCR catalysts can reach the best and the denitrification efficiency can reach the maximum.The denitration efficiency of regenerated SCR catalysts is basically equivalent to that of fresh SCR catalysts,and with the increase of temperature,space velocity and oxygen concentration,the denitration efficiency shows a trend of first increasing and then decreasing.When the temperature is 350℃,the space velocity is 5 000 h-1,and the oxygen volume fraction is 5%,the denitrification efficiency of the SCR catalysts is the highest.The research results show that the regenerated SCR catalysts have good denitration effect and can meet the requirements of flue gas denitration optimization and reconstruction of the target coal-fired power plant.
SCR catalystregeneratedflue gas denitrationoptimization and transformationdenitration efficiency
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维普
