搜索
ThetechnicalcharacteristicsoftheammoniaprocessforremovingSOxandNOxfromfluegas1,2,2(11,210037;21,563003)::,,,,:;Abstract:AmmoniaprocessremovingSOxandNOxfromfluegaspossessesmanyremarkabletechnicaladvantages:desulfurizationefficient,simultaneouslyremovingSOxandNOx,noheatconsumptionandnowasteresidues,useddesulfurizerfewerandtheutilizationratiohigher,noequipmentdamagedandsavingpower.Keywords:SOxandNOxremovedfromfluegas;ammoniaprocess:X701.3:B:1009-4032(2006)02-0032-03,(NH3)2070,2000220t/h,,11.1,SO2SO3,:NH3+H2ONH4OH(1)2NH4OH+SO2(NH4)2SO3+H2O(2)(NH4)2SO3+SO2+H2O2NH4HSO3(3)NH4HSO3+NH4OH(NH4)2SO3+H2O(4)O2COSO3(),;NH4OH+CO2NH4HCO3(5)2NH4OH+CO2(NH4)2CO3(6)2NH4OH+CO2H2NCONH2+3H2O(7)2NH4HCO3+SO2(NH4)2SO3+H2O+CO2(8)NH4HCO3+NH4HSO3(NH4)SO3H2O+CO2(9)2NH4OH+SO3(NH4)2SO4+H2O(10)2(NH4)2SO3+O22(NH4)2SO4(11)2NH4HSO3+O22NH4HSO4(12),(3)SO2(4)1.2H2S,H2S,S;:NH4OH+H2SNH4HS+H2O(13),,2NH4H2S+O22NH4OH+2S(14)1.3NOx:2NO+4NH4HSO3N2+(NH4)2SO4+SO2+H2O(15)2NO+4NH4HSO3N2+4(NH4)2SO4+SO2+4H2O(16)4NH3+4NO+O26H2O+4N2(17)4NH3+2NO2+O26H2O+3N2(18)4NH3+6NO6H2O+5N2(19)8NH3+6NO12H2O+7N2(20)22.12.1.12320064222©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),90%,90%80%2.2,1molSO2,2molNH3100%,,,1,CaSO4(NH4)2SO4,,CaCO3CO21SO2SO2NH3CaOCa(OH)2CaCO3(NH4)2SO4CaSO4CO2121111111/t10.5310.8751.1561.5632.0632.1250.6882/t---1.7502.3123.126---3/t-0.590------4/t--3.5004.624----5/t--8.75011.56015.630---:11t;2;390%,;450%,;520%,1tSO2,NH30.59t;,15.63t26.5,,14.819.6,5.97.8100t:2%,20%,50%,1t,0.59t;4.6t;15.6t,2.06t,;,,,2.3,1molSO2:2NH3(g)+H2O(1)+SO2(g)+1/2O2(NH4)2SO4(ag)+543.4kJ/mol(21)CaO(s)+SO2(g)+1/2O2CaSO4(ag)+520.1kJ/mol(22)Ca(OH)2(s)+SO2(g)+1/2O2CaSO4(ag)+H2O(1)+454.9kJ/mol(23)CaCO3(s)+SO2(g)+1/2O2CaSO4(ag)+CO2(g)+341.9kJ/mol(24),,,,;(),,;,332006:2©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(s)CaO(s)+CO2(g)-179.6kJ/mol(25)Ca(OH)2(s)CaO(s)+H2O(1)-109.2kJ/mol(26)22SO2H/kJmol-1/t/kJ/kJ/kJ80%50%80%50%80%50%80%50%80%50%2NH3543.4--------CaO520.17.92.63.71051.2105--3.71051.2105Ca(OH)2454.910.43.44.91051.61051.51075.01061.61075.5106CaCO3341.914.1-6.6105-2.5107-2.6107-21mol2molNH31molSO2,543.4kJ10kg,9kg,1.4105kJ,1kg60,252kJ,3,1t,,,,601t2.6107kJ,1t,,2.4(15)(16),NONO2,,,,,,,3(),3060,0.005%,()150:(1);(2),,;(3),,,,,,,:,,(,),:[1],,1[M]1:,19981[2],,1:[M]1:,19981[3],,1[M]1:,20021:2005207204;:2006202213:(1956-),,,,4320064222©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.