燃煤电厂SCR脱硝系统流场设计与分析

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中图分类号：X773 文献标志码：A 文章编号：2095-2945（2025）26-0115-04

Abstract：TakingthetypicalII-typefurnace SCRdenitrationflueofcoal-firedpowerplantsastheresearchobject， numericalsimulationmethodswereusedtocalculatetheflowsituationoftheemptytowermodel，analyzethekeycomponents thatarepronetoflowfieldfluctuations，andbasedonthis，flowfielddesignwascariedout.Fowguidedevicesandammonia nitrogenmixerswereaddedtothefluetoobtainthedesignmodel.Comparingtheflowvelocityandconcentrationfeldsoftwo models，itwasfoundthatreasonableflowguidanceatthevariablediameterandtuning pointsofthefluecanefectivelyimprove theuniformityoftheflowfield，andtheammonianitrogenmixercanfurtherenhancetheuniformityoftheconcentrationfield.

Keywords：numerical simulation; empty tower; flow field design;flow velocity；concentration

选择性催化还原（Selectivecatalyticreduction，SCR）脱硝系统是燃煤电厂烟气净化过程中的重要装置，通过喷入还原剂氨，在一定温度和催化剂的作用下，将烟气中的氮氧化物还原为对环境无害的氮气和水[-2。（剩余3578字）