湿法烟气脱硫工艺系统介绍与分析

-!-ENERGYENGINEERING2005#2005-08-041969-310012-X511B1004-3950200505-0042-06IntroductionofwetstackgasdesulphurizationprocesssystemanditsanalysisSHAOFengRONGShu-qunZhejiangTiandiEnvironmentalProtectionEngineeringCo.Ltd.Hangzhou310012ChinaAbstractTakingtheprojectofstackgasdesulphurizationinLanxipowerplantasexamplethispaperintroducesthelimestone-gypsumsetstackgasdesulphurizationprocesssystemreactionprincipleconfigurationandstockoptionatthesametimeitanalysesthekeytechnicalparameter.Keywordswetdesulphurizationabsorbingcolumntechnicalparameter14×600MW-95%BMCRFGD205.2m3/h121℃FGD80℃0.7%0.3%～1.0%0.7%-600MW122.1SO2SO3SO2+H2→**OH++HSO3-SO3+H2→**OH2SO42.2HSO3-H2SO4SO2SO3HSO3-H2SO4HClHFCaCO3+2H++HSO3→**-Ca2++HSO3-+CO2++H2OCaCO3+H2SO→**4CaSO4+CO2++H2OCaCO3→**+2HClCaCl2+CO2++H2OCaCO3→**+2HFCaF2+CO2++H2O2005⑤-#-12.3CaSO3CaSO4CaSO42H2O2Ca2++2HSO3-+O→**22CaSO4+2H+CaSO4+2H2→**OCaSO42H2O25h33.13.1.1,40mm1210m2500t4FGD10m2000t4d20h/d10m3/h9500Pa3.1.2130%2FGDBMCR4h8-!-ENERGYENGINEERING2005#3.2GGHGGHGGHFGDFGDFGDGGHGGHC2761.4529GGH3.2.11100%FGD30%～100%3.2.2GGHGGH100%BMCRGGH80℃GGHGGHGGHGGH11GGH/℃/℃/%124.580,0.51GGHGGH113.2.3FGD41244412343213.344FGDSO2HFHClSO3SO2HFHClSO22005⑤-#-334CaSO3.H2OCaSO4.2H2O350%21pHSO2pHpHpH3.3.1122/m3h-1Ca/S/mm/m205.21.031600034.4233C276317LMN6%Mo3.3.23/44/m3h-1/kPa8163264/251/2363.3.3355/m3h-1/kPa32581033.3.42113.442×75%1222232421150%～55%3%～5%23410%-!-ENERGYENGINEERING2005#100×10-6V/V23.4.14FGD100%75%3.4.2Cl-3.4.3431200m3123.511GGH411110%GGH113.6Cl-12GB8978-1996ICaSO4CaSO32211CaOH2pH9.5～10.0Me2++2OH→**-MeOH2-Me3++3OH→**-MeOH3-Ca2+F-CaF2TMT15FeClSO42005⑤-#-211HClpHCODFeClSO4HClpH4SO2SO2##########$$$$%%%%%202010～12205025～302020401145304115～20350402.537.5101050～6020～252/3157.53000520502550202040%120201010%5%40%5636%60%202020509%～10%116205025～305+5+7.5+2.5=20&