Refined Modeling and Control of Marine Diesel Engine SCR Denitration System Based on 7-State
The conventional 3-state selective catalytic reduction(SCR)denitration model primarily concentrates on the influence of NO and NH3 on the system,omitting the role of NO2.However,the studies show that NO2's influence cannot be disregarded.A 7-state ship SCR denitrification system mechanism model comprising double catalyst and NO2 is created while taking into account the impacts of NO and NO2 on the SCR denitrification system.The performance impact of NO2 on the ship's denitrification system is analyzed and the precision of the improved model is discussed.In addition,a model prediction controller is created to assess the control effects of various models from the standpoint of energy conservation and consumption reduction.According to the findings,the improved model based on the 7-state has a stronger control impact than the conventional 3-state model.
selective catalytic reduction(SCR)denitration rateammonia escapemodel predictive control
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