基于响应面法SCR脱硝反应器喷氨格栅的优化研究

利用计算流体动力学(CFD)方法,采用k-ε湍流模型和组分运输模型对SCR脱硝反应器的氨浓度场进行了数值模拟,并通过实验验证了反应器内氨浓度场数值模拟的准确性,同时,基于响应面法研究了喷氨格栅各结构参数和系统运行参数对SCR脱硝反应器内氨浓度场的影响.结果表明,喷口密度N,开孔率ψ,喷口角度α及入口风速v对氨浓度分布均...

Optimization of ammonia injection grid in SCR denitrification reaction system based on response surface method

Based on the computational fluid dynamics (CFD) method, the k-e turbulence model and component transport model were used to simulate the ammonia concentration field in SCR denitrification reactor. The accuracy of the numerical simulation of ammonia concentration field in the reactor was verified by experiments. The influence of ammonia injection grid structural parameters and system operation parameters on ammonia concentration field in SCR denitrification reactor was studied. The results indicated that the nozzle density N, the opening ratio ψ, the nozzle angle α and the inlet wind velocity v all had some influence on the ammonia concentration distribution uniformity, and the significance of the influence was n > α > V > ψ. The optimum structure parameters and system operation parameters were obtained, and the corresponding nonuniform coefficient of ammonia concentration distribution was 0.0151. The optimum structure parameters were:r=8, d=57mm, α=90°, and the optimum operation parameters of the system were v=8.17m/s.