小苏打粉用于工业锅炉烟道脱硫的试验研究高培桥(山东兖矿国际焦化有限公司,山东济宁272100)摘要:针对工业锅炉启停炉期间SO2易波动的问题,通过4MW循环流化床锅炉中试试验平台,试验了小苏打粉钠硫比、粉体粒径、喷射方式、空间温度等对烟道内喷射脱硫效率的影响。试验表明,制约烟道内脱硫的关键因素是温度。尾部烟道120~150℃可以满足小苏打粉烟道脱硫的温度要求。在钠硫比为9的条件下,烟气中SO2排放可稳定在35mg/m3以内,可作为CFB锅炉启停炉期间的SO2达标排放的应急保障措施。采用800目小苏打粉、对侧斜向喷入方式、尾部烟道位置是较为理想的烟道内应急脱硫方式。关键词:小苏打粉;粒径;温度;喷射方式;脱硫效率中图分类号:X701.3文献标识码:A文章编号:1005⁃8397(2023)04⁃0093⁃05ExperimentalstudyonfluedesulfurizationofindustrialboilerswithbakingsodapowderGAOPei-qiao(ShandongYankuangInternationalCokingCo.LTD,Jining,Shandong272100,China)Abstract:AimingattheproblemthatSO2fluctuateseasilyduringthestartandstopofindustrialboilers,theeffectsofsodiumsulfurratioofbakingsodapowder,particlesizeofpowder,injectionmodeandspacetemperatureontheefficiencyofflueinjectiondesulfurizationweretestedonthepilottestplatformof4MWcirculatingfluidizedbedboiler.Theresultsshowthattemperatureisthekeyfactortocontroldesulfurizationinflue.Tailflue120~150℃canmeettherequirementsofbakingsodafluedesulfurizationtemperature.UndertheconditionthattheS...