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云南滇东4×600MW新建工程烟气脱硫项目设计摘要本设计针对云南滇东电厂所给出的烟气含量、石灰石成分和除尘脱硫要求，结合我国烟气除尘脱硫的技术现状而设计出的一套烟气除尘脱硫系统。本设计的主要内容为，对目前几种主要的除尘和烟气脱硫工艺做综述性介绍，然后通过比较各除尘方式以及各脱硫工艺的优缺点和使用情况，选择适合本设计工程概况的除尘方式和脱硫工艺。本设计选择电除尘和石灰石—石膏湿法脱硫工艺。本设计主要是介绍该除尘脱硫系统中的各个子系统的工艺过程和设备布置，它们分别是除尘系统、烟气系统、吸收系统、吸收剂浆液制备系统、石膏脱水系统以及废水处理系统，并重点对电除尘器、吸收系统、吸收剂浆液制备系统和石膏脱水系统中的主要设备进行计算设计选型。最后对所设计除尘脱硫系统做出总结性分析，并作简单的工程概算和技术经济分析。关键词：湿法石灰石－石膏法,电除尘器,烟气脱硫，主体设备计算2×600MWnewconstructiondesignofFlueGasDesulphurizationprojiectInEastenYunnanAbstractThisdesignaccordingtothegivenpowerofEastenYunnanmanufactoryfluegascontent、limestonecompositionanddustremovalanddesulfurizationrequirements,combinedwiththefluegasdesulfurizationanddustremovaltechnologysituationofasetoffluegasdesulfurizationdenitrationsystem.Themajorworkforthisdesign：Introducesseveralfluegasdesulfurizationtechnologies,choosesproperFGDprocessforthisprojectaftercomparingmeritsanddrawbacksofseveralmajordustremovalandfluegasdesulfurizationtechnologies.Finally,weappliedthewetlimestone-gypsumfluegasdesulfurizationprocess.Thisdesignistointroducethesystemofdustremovalanddesulfurizationprocessofeachsubsystemandequipmentlayout.AsfortheFGDsystem,mainlyintroducestheprocessandfacilityarrangementofsubsystemsinFGDsystem,andtheyarerespectivelythesystemoflimestoneslurrypreparation,gypsumtreatmentsystem,adsorptionsystem,systemoffluegasandwastewatertreatmentsystem.Attheendofthisdesign,itmakessomecomprehensiveanalysisofthewholesystemdesigned,andmakessomeengineeringbudgetaryaswellassomesimpleeconomicandtechnicalanalysis.Keywords:wetlimestone-gypsumandscr.somemethod,fluegasdesulfurizationanddenitrationmainequipment目录摘要.....................................................................IABSTRACT................................................................II第1章绪论..............................................................V1.1烟气除尘脱硫的背景.................................................V1.2烟气脱硫的目的及意义...............................................V1.3课题研究的主要内容................................................VI第2章工程概况........................................................VII2.1电厂概况.........................................................VII2.2烟气参数.........................................................VII2.3石灰石参数.......................................................VII2.4总体设计原则....................................................VIII第3章烟气脱硫工艺的选择................................................X3.1几种常见的脱硫工艺.................................................X3.1.1石灰石-石膏湿法脱硫工艺......................................X3.1.2旋转喷雾半干法烟气脱硫工艺（LSD法）.........................XI3.1.3炉内喷钙加尾部增湿活化工艺（LIFAC法）.......................XI3.1.4烟气循环流化床脱硫（CFB）工艺..............................XII3.2脱硫工艺比较....................................................XIII3.3脱硫工艺的确定..................................................XIII3.4本设计采用的脱硫系统.............................................XIV3.5石灰石-石膏湿法烟气脱硫工艺系统..................................XIV3.5.1烟气系统...................................................XIV3.5.2SO2吸收系统..................................................XV3.5.3石灰石浆液制备系统..........................................XV3.5.4石膏脱水系统................................................XV3.5.5供水和排放系统.............................................XVI第4章物料平衡计算.....................................................174.1除尘、脱硫效率的计算..............................................174.1.1除尘效率的计算..............................................174.1.2脱硫效率的计算..............................................174.2吸收剂消耗量的计算................................................174.2.1净烟气中SO2浓度.............................................174.2.2石灰石消耗量................................................17第5章主要设备尺寸、规格的计算.........................................195.1除尘器............................................................195.1.1除尘器类型的确定............................................195.1.2电除尘器的设计计算..........................................215.1.3电除尘器总体尺寸的计算......................................235.1.4电除尘器零部件设计与计算....................................255.2烟气系统..........................................................265.2.1旁路烟道....................................................265.2.2FGD入口烟道.................................................265.2.3FGD出口烟道.................................................265.2.4烟气挡板门..................................................265.2.5烟气换热器..................................................275.3SO2吸收系统.......................................................275.3.1吸收塔的选择................................................275.3.2吸收塔尺寸设计计算..........................................285.3.3吸收塔附属设备的选型........................................305.3.4吸收塔高度的计算............................................315.3.5吸收塔附属部件设计..........................................325.4浆液制备系统的设计计算............................................325.4.1浆液制备系统的选择..........................................325.4.2主要设备的计算..............................................325.5其他系统设备设计选择..............................................345.5.1增压风机.................