Application of Partition Controlled Ammonia Injection Grid on a 1 000 MW Opposed Firing Boiler
The uniformity of flow field and ammonia injection in denitrification system of 1 000 MW opposed firing boiler is greatly challenged due to the characteristics of wide flue gas duct.In order to realize the good application of the partition ammonia injection grid in the 1 000 MW opposed firing boiler,the flow field design of the denitrification system is very im-portant.The partition controlled denitration system on a 1 000 MW opposed firing boiler was studied by simulation and experiment.Focus on the unique guide plate structure of the deni-trification system,the flow equalization effect was studied by means of simulation.The sim-ulation results showed that the denitration system had a high uniformity of flow field distri-bution under the existing guide plate which meet the design requirements.Under the rated load,the non-uniformity of the flow velocity distribution at the inlet and outlet of the ammo-nia injection grid and the catalyst was tested.The test results showed that the non-uniformity of NOx concentration distribution at the denitration outlet was small and the flow velocity distribution was uniform,and the test results verified the accuracy of the simulation.The simulation and experimental results have verified the superiority of the denitration system de-sign,and the design of partition controlled denitration system is worth popularizing.
partition controlledammonia-injection gridguide plateuniformity of am-monia injection
万方数据
维普
