Research On The Control Of Denitrification In Thermal Power Plant Based On Fast SCR Reactor

And is currently many scholars are devoted to the goal of increasing the people’s awareness of environmental protection, and thermal power plant burning exhaust gas, has caused the considerable pollution, so the how the destruction of the environment and the healthy organism pollution gas removal. In this paper, we consider the method to achieve low energy consumption and higher conversion rate and in addition to nitrogen oxides fast selective catalytic conversion reactor (fast of selective catalytic reduction reactor; FastSCR dynamic simulation, optimization design, the concentration control and parameter influence problems.Simulation be divided into two parts, the first front-end oxidation catalytic reactor Diesel Oxidation Catalysts;DOC), In this thesis collectively referred to pre-oxygen system (DOC SCR), while pre-oxygen system works is use oxygen to oxidize a Nitric oxide as nitrogen dioxide. The second is the back-end selective catalytic converter reactor selective catalytic reduction reactor; SCR), the thesis collectively referred to denitrification system (DeNOx SCR), while denitration system works divided into standard and fast reaction. Standard reaction is use of oxygen and ammonia of the removal of NOx, while fast reaction is the use of ammonia and nitrogen dioxide of the removal of NOx. To verify the mathematical model, a parameter estimation method developed based on a real-coded genetic algorithm is proposed. On the other hand, the SCR is optimized to enhance the efficiency of the reduction of NOx and to prevent from the NH3 slip and consider the the influence of various parameters on the system. Finally, a direct adaptive model- free control scheme is proposed to regulate the exit NO concentration. An output- bounded double single neuron controller with its parameter tuning algorithm is utilized for the learning control of the SCR by merely observing the process output error, even though the process dynamics is characterized by partial differential equations. Extensive simulation results show that the performance of the SCR reactor is very satisfactory for NOx reduction, enhance system Oxidation of nitric oxide to nitrogen dioxide and DeNOx system to removal the ability of nitric oxide and operation of performance.