水泥厂回转窑尾除尘系统改造设计

扬州大学本科生毕业设计摘要本设计是对某水泥厂回转窑尾除尘系统进行的改造设计。此水泥厂拥有一条Ф2.4/2.641m泾阳型偏心立筒预热器回转窑生产线，其生产能力为5万吨每年普通硅酸盐水泥。处理烟气量：140000m3/h；烟气温度：180℃(除尘器入口)；标准状况下入口烟气含尘浓度：≤80g/m3；烟尘露点：35-40℃；除尘系统改造后的尾气排放标准应符合GB4915-2013《水泥厂大气污染物排放标准》中的二级标准（30mg·m-3）；二氧化硫的排放浓度为200mg·m-3，氮氧化物的排放浓度为400mg·m-3。根据最新的设计要求以及目前水泥企业的除尘设备新的选用趋势，本设计选用旋风除尘器以及袋式除尘器对原有除尘系统进行进一步的改造，并针对袋式除尘器的特点以及尾气排放过程中对二氧化硫和氮氧化物最新要求添加填料塔。从而能够更好地完成对尾气的处理，并最终能够达到设计所要求的标准，尽可能做到无污染排放。关键词：水泥厂；窑尾除尘；除尘器扬州大学本科生毕业设计ABSTRACTThedesignisaboutimprovementofthetailofacementfactorykilndustremovalsystem.TheplanthasaФ2.4/2.641mJingyangeccentricshaftpreheaterkilnproductionlines.Thisproductioncapacityofordinaryportlandcementis50000tonsayear.Fluegashandlingcapacity:140000m3/h;GasTemperature:180°C(precipitatorentrance);Standardconditionsimportgasdustconcentration:≤80g/m3;Dustdewpoint:35-40°C;DedustingsystemintheexhaustemissionstandardsshouldmeetGB4915-2013plantatmosphericpollutantemissionstandardsaccuratethesecondlevelstandard(30mg•m-3).theemissionofsulfurdioxideconcentrationof200mg•m-3,Nitrogenoxideemissionsconcentrationof400mg•m-3.Accordingtothedesignrequirementsandtheexistingcemententerprisesdedustingequipmentselectiontrend.Thedesignchosentocompletethedustcollectorcycloneandbag-typecollectoroftheoriginalsystem'stransformation,ESPandtheresponsecharacteristicsoftheexhaustemissionsofsulfurdioxideandnitrogenoxiderequirementsaddedthefillingLiutower.Thisbettercompletionoftheexhaustgastreatment,itcaneventuallyreachthestandardsrequired.Trymybesttoreducetheemission.KEYWORDS:Cemnetplant,cementkilndusttreat,dustcollector扬州大学本科生毕业设计目录1.说明..................................................................................................................................11.1.设计基本情况.......................................................................................................11.1.1.设计概况....................................................................................................11.1.2.除尘系统设计意义....................................................................................11.1.3.原始资料....................................................................................................21.1.4.本地的气象数据........................................................................................31.2.方案选定...............................................................................................................31.2.1.我国水泥工业概况....................................................................................31.2.2.水泥回转窑工艺........................................................................................31.2.3.水泥工业的大气污染物............................................................................41.2.4.水泥工业常用除尘方法比较....................................................................51.2.5.工艺流程确定..........................................................................................142.计算书............................................................................................................................152.1.除尘器入口气体数值.........................................................................................152.2.旋风除尘器设计.................................................................................................152.2.1.设计参数..................................................................................................152.2.2.确定选型..................................................................................................152.2.3.进口风速..................................................................................................172.2.4.压力降...................................................................................................182.2.5.旋风除尘器除尘效率..............................................................................182.3.袋式除尘器设计.................................................................................................202.3.1.设计参数..................................................................................................202.3.2.确定滤袋过滤风速及面积......................................................................202.3.3.确定袋式除尘器选型..............................................................................212.3.4.其它附属措施要求..................................................................................212.4.填料吸收塔设计.................................................................................................222.4.1.设计参数..................................................................................................22扬州大学本科生毕业设计2.4.2.泛点气速..................................................................................................222.4.3.填料塔直径..............................................................................................242.4.4.填料层高度..............................................................................................252.4.5.填料层的分层..........................................................................................262.4.6.净化性能..................................................................................................262.4.7.排气筒设计.........