燃煤锅炉空预器堵塞防控技术研究与应用

——基于烟气导流优化与温升热解工艺的创新实践

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中图分类号：X701 文献标志码：A 文章编号：2095-2945（2026）08-0071-06

Abstract：Withtheadvancementofultra-lowemisiontransformationofcoal-firedpowerplants，theblockageproblemofair preheaterafterdentrificationseriouslyrestrictsthesafeandconomicoperationoftheunit.Aimingattheclogingproblemof the air preheater of the 3# boilerunit of a certain plant， through numerical simulation and field tests，this paper proposesand implementskeytechnologiessuchasfluegasdiversionoptimization，temperaturerisepyrolysisplugingremoval，andhighand lowtemperaturefluegasmixing.Theresearchresultsshowthatbyinstalinghorizontalandaxialguideplates，theflowvelocity deviation of the denitrification flue section is reduced from 47.3% to 14.8% ，and the ammonia escape volume is reduced by 0.837tons/day；afteradoptingthetemperaturerisepyrolysisprocess，theresistanceoftheairpreheaterisreducedby700 Pa， and the exhaust gas temperature isreduced by 2.9 C ，realizing online blocking removal without stopping the furnace; the applicationofcommunicationfluetechnologyensuresthesafeoperationofthebagdustcollector.From2O21to2023，a cumulative efficiency of 6.57 million yuan has been created， reducing CO 2 emissions by 893 tons per heating season. This technicalachievementprovidesaneficientandlow-carbonsolutionfortheclogingcontrolofairpreheaterincoal-firedpower plants，and has significant promotion value.

Keywords：airpreheaterclogging；ammoniaescapecontrol;temperaturerisepyrolysis;fluegasdiversion；energyconservation and emission reduction

新能源结构体系下，燃煤电厂作为电力供应的重要组成部分，起到“压舱石、稳定器”核心作用，其环保与能效问题备受关注。（剩余7671字）