燃气分级耦合旋流结构对燃烧性能的影响

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中图分类号：TK174 文献标识码：A DOI：10.7535/hbkd.2025yx06010

Abstract： In order to reduce the excessive nitrogen oxide （NO ） emissions from traditional swirl burners in heat treatment furnaces，alow nitrogen burneroptimization method based ongasclasification technologywas proposed.Firstly，theordinary swirlburnerwasusedasthe basicstructure，thegasgrading structure was addedwithout significantlyincreasing fuel consumption.Secondly，theANSYSFluentstwaresystemwas usedto simulate theinfluence thebladeangleair flow rate the first-stage stator cascade on the NOx generation. Finally，by comparing the mixing uniformity，temperature distribution NOx concentration field，the optimal parameter combination was determined. The results show that the gas gradingstructuresignificantlyimproves the mixing eficiency secondarygasswirlingair，theheatload distributionis more uniform， the thermal NOx production is reduced. When the first-stage stator cascade blade angle is 30∘ ，the air flow rateis 1.15m/s ， the proportion primary gas is 65% ，theburner performance is optimal， the NO x emission is significantlyreducedcomparedtothetraditionalstructure.Thisstudyprovidesanoptimizationdirectionforthedesignlow nitrogen burners hasreferencevaluefortheenvironmentalprotectiontransformation industrialcombustionequipment.

Keywords：combustionscience；low nitrogencombustion technology；naturalgascombustion；coupling low nitrogen technology；numerical simulation；swirl combustion

热处理炉作为工业加热的核心设备，其能源效率与污染物排放控制备受关注。（剩余12698字）