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针对DN3600柱型凝结水精处理高速混床提出了“一次挡板+填料”式两级进水装置。基于Fluent采用N-S方程和Rng k-ε湍流模型方程组,对常规一次挡板+水帽式进水装置与研发的一次挡板+填料式进水装置的流速分布进行了数值模拟,采用速度等值线图对其布水均匀性进行比较和压降计算,并试制了1:1样机进行模拟运行实验验证。通过比较得出,填料式进水装置的配水均匀性和压降均优于水帽式进水装置;样机模拟运行实验表明,采用填料式进水装置的DN3600高速混床在最大设计流量下,设备运行压降低,树脂层平稳、无扰动。
For DN3600 column condensate polishing high-speed mixed bed proposed a “baffle + packing” type two water inlet device. Based on the Fluent equations of Navier-Stokes equations and Rng k-ε turbulence model, the flow distributions of the conventional primary baffle + water cap-type water inflow device and the developed baffle + infilled water inflow device were numerically simulated. The velocity and so on The value map is used to compare the water distribution uniformity and the pressure drop calculation, and a 1: 1 prototype is trial-produced to verify the simulation operation. By comparison, it is concluded that the uniformity and pressure drop of the water distribution device are better than that of the water cap type water inflow device. The simulation experiments of the prototype show that the DN3600 high speed mixed bed with the filler type water inflow device is under the maximum design flow rate, Low pressure equipment operation, the resin layer is smooth, non-disturbance.