氨法烟气脱硫技术的工艺研究邵申

*200444。、pH、、。pH、pH6.3、1%L/G、、NH42SO3。STUDYONPROCESSOFFLUEGASDESULPHURIZATIONBYAMMONIAMETHODShaoShenSunZaiboWanHaoJiangShuGuXiaojingInstituteofEnvironmentalPollutionandHealthSchoolofEnvironmentalandChemicalEngineeringShanghaiUniversityShanghai200444ChinaAbstractExperimentsoffluegasdesulphurizationwereperformedbyusingammoniumsulfiteasadsorbent．TheinfluenceofaffectingfactorsincludinginletgastemperaturepHandconcentrationofabsorptionandratioofliquidtogasvolumeontheefficiencyoffluegasdesulphurizationwasanalyzed．Affectingfactorsoftheoxidationofammoniumsulfitewasalsostudied．TheexperimentalresultsshowthatInletgastemperatureisinverselyproportionalwiththeefficiencyoffluegasdesulphurizationpHandconcentrationofabsorptionisproportionalwiththeefficiencyoffluegasdesulphurization．WhenpHishigherthan6.3andconcentrationishigherthan1%thevolatilizationofammoniaincreaseswiththeincreaseofpHandconcentrationofabsorption．AndtheefficiencyoffluegasdesulphurizationisincreasedwiththeincreasingofL/G．TheoxidationrateofNH42SO3whichisinverselyproportionalwithinitialconcentrationofammoniumsulfiteisdecreasedwiththedecreaseoftemperatureandoxidationtime．Keywordsammoniumsulfiteammoniamethodfluegasdesulphurizationammoniavolatilization*8632009AA064102。01-2。。87%SO2SO23-4。SO25-7。－、、。、－。。8。－、、、。。、pH、、17201110295DOI:10.13205/j.hjgc.2011.05.028。1。NH42SO3－NH4HSO3SO2NH3+H2O+SO2→NH4HSO312NH3+H2O+SO2→NH42SO32NH42SO3+SO2+H2O→2NH4HSO33NH4HSO3+NH3→NH42SO34SO2NH42SO3NH4HSO3NH42SO3。。2SO2NH42SO3NH4HSO3NH4HSO3NH42SO3SO29。SO2NH4HSO3。。1。SO21.3m210mm。SO2。1—2—3—4—5—6—7—8—133.110-11。、。。120℃5060708090100110120130140150℃。2。22110℃。90～110℃。3.2pHpH12SO2、NH42SO3pHpH。3pH＜5.5pH5.5＜pH＜6.3pHpH＞6.3pH。3pH。pHH+HSO－3HSO－3SO2。pH。。pH5.5～6.3。272011102953pH3.3。NH42SO3SO2。1%、2%、3%、4%、5%NH42SO3。4。1.045%1.045%95.3%～98.2%。1%2.113%、3.161%3.978%21.229.433.6mg/m3。1.045%2.9mg/m397%。1%。43.4L/G13。。5。。551～4L/m353.1%96.2%L/G4L/m395%。4L/m3。3.5、。。pH12。pH。pH=6.0、1%3.1mg/m32.9mg/m395.6%97.0%。pH=6.0、1%。1pHpH/mg·m－3/%5.55093.85.72094.75.983.195.66.327.295.36.5427.195.26.7126.896.17.0338.597.37.2852.297.87.4867.497.5372011102952/%/mg·m－3/%1.0452.997.02.11321.296.93.16129.498.23.97833.697.55.21645.895.33.6。、6、7。67NH42SO367。O2。7NH42SO3NH42SO3。NH42SO3、。NH42SO3。41L/G=4L/m3、pH=5.5～6.3、1%95%。2。、、。3NOx。、。1．J．200523349-50.2WangLidongZhaoYi．KineticsofsulfiteoxidationinwetdesulfurizationwithcatalystoforganicacidJ．ChemicalEngineeringJournal2008136221-226.3LiuYanTeresaMBissonYangHongqunetal．RecentdevelopmentsinnovelsorbentsforfluegascleanUpJ．FuelProcessingTechnology2010911175-1197.4GengaDOOBarawaMMMLEEKTetal．Sulphurdioxideremovalusingsouthafricanlimestone/siliceousmaterialsJ．Fuel2010892549-2555.5GaoXiangDingHongleiZhenDuetal．Gas-liquidabsorptionreactionbetweenNH42SO3solutionandSO2forammonia-basedwetfluegasdesulfurizationJ．AppliedEnergy2010872647-2651.6．J．200418434-35.7XuGuangwenGuoQiminTakaoKanekoetal．Anewsemi-drydesulfurizationprocessusingapowder-particlespoutedBedJ．AdvancesinEnvironmentalResearch200049-18.8．J．200521217-20.9．J．200925321-22.10．J．200451161-63.11．J．2007737-39.104472011102953RSW。。、。CO。2.21。2150t。1MPa300μm。。80t。。2。。0.5m1.5～2.5m30～60t。150t、60t。3。。。。3。。。1.J．2009430-34．2．．—J．20092729-11．3．M．1975．4．．[e-mail]2011－07－15櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅7412．J．2009272[e-mail]2011－02－22401201110295