高效填料塔中用柠檬酸柠檬酸钠溶液进行烟气脱硫的研究袁孝竞

袁孝竞　李围潮　盛在行　郭卫东　沙　勇　谢宜燕(,300072)。,SO2,。,。SO2。:　　　　　　70,SO25%,、、[1]。SO2135×10-6[2]。SO2500×10-6,SO287%[3]。(FlueGasDesulfurization,FGD),SO2。,SO20.1%～0.5%,,、。[4]。、、Wellman-Lord。,,。1　SO2:3SO2(g)+3H2O+Na3Ci3NaHSO3+H3Ci(1),。H3Ci。2　12。1　1-SO2;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-;13-;14-;15-;16-;17-·46·　2001292,。。、,。2　1-;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-　　280mm148mm,,250Y,1.4m1.7m。,。1,SO2,,。,SO2。,。2。,。。,SO2,SO2,SO2。[5]。3　SO2,AEDE。:AE=Gin×[SO2]in-Gout×[SO2]outGin×[SO2]in×100%　(2)DE=Lin×[SO2]in-Lout×[SO2]outLin×[SO2]in×100%　(3)　　,,。3.1　LG3LGSO2AE。,AELG。LG5.0,AE99%。LG,AE,,。5～10。3　LGSO2　　4DE,F,,DEF。,KOGF。,F2.3～2.5(ms)(kgm3)0.5。3.2　pH5pHSO2。,pH,SO2。·47·袁孝竞等　,。pH4.4,SO299%。4　SO2　　6pHSO2。,LG,pH,。pH,SO2,SO2。pH,。,pH4.0～5.0。5　pHSO2[SO2]in=1500×10-6Lin=10m3(m2·h),　t=20℃6　pHSO2[SO2]in=3.44gL,　[Na3Ci]=0.1molLLin=160Lh,　t=74℃3.3　7。,SO2。,,,,,。0.4molL,SO299.5。,。8。,SO2。SO2,SO2,SO2。7　SO2[SO2]in=2000×10-6Lin=10m3(m2·h),　t=21℃8　SO2[SO2]in=6.69gL,　pH=4.4Lin=160Lh,　t=74℃·48·　2001292　　,,SO23000×10-6,0.1molL。SO298%,80%。SO23000～5000×10-6,0.1molL,pH,0.3～0.4molL。3.4　SO2SO2SO2。9,SO2,。SO23.0gL,。10SO2。,F,SO2。,SO2。、、,SO25～8gL。9　SO2SO210　SO2SO2[Na3Ci]=0.1molL,　pH=4.4Lin=160Lh,　t=74℃3.5　SO211,,SO2。,,,。,40～70℃。11　SO2[SO2]in=2000×10-6[Na3Ci]=0.4molL,　Lin=10m3(m2·h)3.6　SO212,SO2。5～10,12,10m3(m2·h)。12　SO24　(1),。、、,。(2),、pH、,SO2。,SO2、、pH,SO2。·49·袁孝竞等　(3):,LG5～10Lm3,40～70℃。,F2.3～2.5(ms)(kgm3)0.5,SO25～8gL,0.1～0.4molL,10m3(m2·h)。pH4.0～5.0。(4)、、,。:非常感谢王树楹先生为本研究提供了实验装置。AE　,%DE　,%Gin　,m3hGout　,m3h[SO2]in　SO2,10-6(),gL()[SO2]out　SO2,10-6(),gL()Lin　,Lhm3(m2·h)Lout　,Lhm3(m2·h)1　.“”.,1992(4):40.2　,..,1995(1):22.3　,..,1991(6):18.4　,..,1996,13(2):7.5　..,1987.【45】　　,,,。,,,,。4　,,,。:(1),0.9mm;(2);(3),,,0.8;(4),;(5),,、、。CDs　dp　,mmdT　,mmQG　,m3/minr　,rminRer　ur　,msvp0　,msw　,mwi　,kg(i=1,2,3)β　,%ρg　,kgm3η　ηg　,Pa·s1　.,5.:,1989.220.2　BatelW.EinfuhrungindieKorngroessentechnik.Berlin:SpringerVerlag,1971.3　.,5.:,1989.173.4　SmithMR.ClassifiersMiningMagazine.1984.4.5　..,99109166.3,1999.6.·50·　2001292thetangentialvelocityisestablished.Thecalculationmethodfortangentialvelocityinthechamberisraisedandhaspassedthesequentialexperimentaltests.Keywords:rotaryfilterpress,flowfluid,filterrateDevelopmentofaNewCentrifugalPneumaticClassifierforPowderMaterialsWangJinfu,DongLanzhong,JingShan,JinYong(DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084)Basedontheanalysistotheprincipleofthepneumaticclassificationforthepowdermaterials,anewtypeofcentrif-ugalpneumaticclassifierforureaproducthasbeendeveloped.Anewtechnologicalprocessofclassificationhasbeenalsoproposedfortheindustrialapplication.Theexperimentalresultsshowthatthenewclassifiercombinedwiththenewpro-cesscanreachasatisfactoryefficiencyintheclassificationofureaproductinalargescaleofcapacity.Keywords:classifier,pneumaticclassification,classificationefficiency,ureaFlueGasDesulfurizationbyCitrateSolutioninPackingColumnsYuanXiaojing,LiWeichao,ShengZaihang,GuoWeidong,ShaYong,XieYiyan(ChemicalEngineeringResearchCenter,TianjinUniversity,Tianjin300072)FGDprocessusingcitricacidsodiumcitratebuffersolutionhasbeencarriedoutinstructuredpackingcolumns.SO2inanalogfluegaswasfirstabsorbedinaqueoussodiumcitratesolutioninanabsorptioncolumnandthenrecoveredfromtheloadedsolutioninadesorptioncolumn.Theregenerativebuffersolutioncirculatedtoabsorptioncolumnagainforuse.SeveralimportantfactorsthatmayaffectSO2absorptionanddesorptionefficiencyweretestedindividually.TheoptimaloperatingconditionsforsodiumcitrateFGDprocessinpilotpackingcolumnsweredetermined,whichcanbeex-tendedintolarge-scaleFGDdesign.Keywords:fluegasdesulfurization,citricacidsodiumcitratebuffersolution,sulfurdioxide,packingcolumn,structuredpackingRecentProgressofSprayDryinginChinaHuangLixin,WangZonglian,TangJinxin(ResearchInstituteofChemicalProcessingandUtilizationofForestProducts,ChineseAcademyofForestry,Nanjing210042)Thedevelopmentofspraydryingtechniqueduringpast10yearsinChinaisreviewed.Mainachievementsinre-search,developmentandutilizationofthreetypesofatomizationaredescribedandsummarized.Generaltrendofspraydryingresearchanddevelopmentin21stcenturyisforecasted.Keywords:atomization,spraydrying,spraygranulation·4·　　　　　　　　　　　　CHEMICAL　ENGINEERING(CHINA)　　　　　　Vol.29,No.2,2001