提高锅炉热效率的新技术富氧燃烧

:100428774(2007)01210204:(1949-),1976:2006208223(,330029):,,:;;;:TK16:ATheNewTechniquetoImproveBoilerEfficiencytheRichQxygenBurningLIUXing2jia(TheInspectionInstituteofBoilerandPressureVesselofJiangxiProvince,Nanchang330029,China)Abstract:Applyingthenewtechniqueofrichoxygenburning,improvingandsavingenergy,discussestheadvantagesofthetechniqueofrichoxygenburningatpresent,byelevatingthefurnacetemperature,decreasingsmokeheatloss,anda2voidingtheatmospherepollutionfromnitrogen,alsopointsoutthewaywhendisposingthehotsideofboiler,andputfor2wardthenewwayofnewboilerproductdevelopment.Keywords:furnacetemperature;heatloss;nitrogenoxygen;efficiency0,,,,,:(1);(2)();(3),;(4),;(5),;(6),,95%:,;,79%,,,,,0120071(101),,,11957,,,79%,,79%,-:(CO2)(N2)(O2)(H2O)6:(CO2)(O2)(H2O)4:()4,6,4-80120,10010001273K,11001373K,qf=5.66910-8A(1373)4qc=5.66910-8A(1273)4:qf/qc=5.66910-8A(1373)4/5.66910-8A(1273)4=(1373)4/(1273)4=1.353,1.353,tll=Qdy+Crtr+CktkLaCyVy(1)Qdy,kJ/kg(m3)CyCkCr,kJ/(m3),kJ/(kg)trtk,Vy,m3/kg(m3)La,m3/kg(m3)(1)12001800,(1):Vy,,2(Ipy-pyIlk)(100-q4)/Qdw(2)IpypyIlkq4Qdw(2)Ipy79%,,,,,Ipy(100-q4)/Qdw(3)Ipyq411Qdw,,1kgC+O2=CO2+408860kJ1kg12+32=44+408860kJ,1kg4074kJH2+0.5O2=H2O+242050kJ1kg2+16=18+242050kJ,1kg121025kJ110807kJS+O2=SO2+296900kJ1kg32+32=64+296900kJ,1kg9278kJCmHn,Si+O2=SiO26Ca+3O2=3Ca2O3Fe+0.5O2=FeO+269768kJ1kg56+16+72+269768kJ,1kg4815kJ2Fe+1.5O2=Fe2O3+824462kJ3Fe+2O2=Fe3O4+1113575kJ,(N2),,60%,SiO2Ca2O3(N2)60%3(N2),,900,NONO2,NOx(NO):,(NO)(CO),(NO2),NONO2,(SO2)NO,,,(NO2),,,N2N2,,,,(NO)(NO2)4,,,,(1),;(2),(28)2120071(101),,,GB15762001,,;,,,329001100,,,,,,(1),50mm,,,,,,,2,21222(2),,,(3),,,1,200mm,,,,0.2m/s,,33,,,,,[1],.[M].:,1990.[2]JB/T86591997[S].[3]GB15762001[S].(12)(3),,(4),;(5),;79%,,,[1].[M].:,1979.[2][]J.P..[M].:,1979.[3].[M].:,1973.[4].[M].:,1977.[5],,.[M].:,1978.[6].[M].:,1974.8220071(101)