The condensate polishing system in the secondary circuit of PWR nuclear power plant deals with large quantity of water and has high requirements for outlet water quality.Thus

the Fluent software was adopted to simulate the water distribution uniformity in various water intake devices in the DN3600 column type high speed mixed bed.Suggestions that the water intake device with " upward buckling baffle+packing" should be applied in the DN3600 column type mixed bed and simulated running test be conducted on a1∶1prototype were proposed.The experimental results show that

with the largest design flow rate

the pressure drop of equipment operation is low

the water distribution is uniform

and the resin layer is smooth and with no disturbance

indicating the water distribution uniformity problem in large diameter condensate polishing high speed mixed bed has been solved.