毕业设计（论文）题目名称：2×50MW煤粉锅炉给水处理系统设计院系名称：能源与环境学院班级：热能与动力工程091班学号：学生姓名：指导教师：2013年5月2×50MW煤粉锅炉给水处理系统设计TheDesignof2×50MWCoalBoilerFeedWaterTreatmentSystem论文编号：院系名称：能源与环境学院班级：热能与动力工程091班学号：学生姓名：指导教师：2013年5月摘要文明不断进步，社会对电力的需求量也日益增加。随着大型火电机组建设规模不断扩大，电厂锅炉补给水的品质提出了更高的要求，从而电厂化学水处理也提出了更高的要求。火力发电厂的用水多来自于江、河、水库等水力资源，大江、大河、水库中的水含有有机物、胶体等杂质，水中含有溶解的盐类及气体。水在火力发电厂中的生产工艺中，既是热力系统的工作介质，也是某些热力设备的冷却物质，所以水质是发电厂安全运行的必要条件。因此为了保证热力系统中有良好的水质，电厂必须对水进行净化处理和严格的水汽质量监督，电厂中必须设置锅炉水处理系统，对原水进行除气、除盐、除杂质等处理。本文以2×50MW煤粉锅炉给水为例，为锅炉给水确定水处理方案。关键词：电厂锅炉给水处理系统；化学水处理ABSTRACTCivilizationisdeveloping,andsocialdemandforelectricityisincreasing.Withtheconstructionoflarge-scalethermalpowerunitshavebeenexpanding,powerplantboilerfeedwaterqualityputforwardhigherrequirements,thuschemicalwatertreatmentplantalsoputforwardhigherrequirements.Thermalpowerplantwatercomefromtherivers,reservoirsandotherwaterresources,whilewaterofriver,rivers,reservoirscontainsorganicmatter,colloids,dissolvedsalts,gasesandotherimpurities.Waterinthermalpowerplantsisnotonlythermalsystemworkingmedium,butalsosomeofthethermalequipmentscoolingsubstances,sowaterisanecessaryconditionforsafeoperationofpowerplants.Therefore,inordertoensurethermodynamicsystemhasgoodwaterquality,waterpurificationplantsmustdealwithwater-vaporqualityandstrictqualitysupervision,powerplantsmustbesetboilerwatertreatmentsystemsdealingwiththerawwaterdegassing,demineralization,impuritiesandothertreatment.Thispaperdesignstheboilerfeedwatertreatmentprograminthecaseof2×50MWcoalboiler.Keywords:powerplantboilerfeedwatertreatmentsystem;chemicalwatertreatment目录摘要.....................................................................................................I1引言.................................................................................................11.1选题背景及研究意义..................................................................11.2本文主要工作...........................................................................22设计说明...........................................................................................32.1工程概况..................................................................................32.2水质原始资料...........................................................................33水质资料分析.....................................................................................43.1阴、阳离子含量校核..................................................................43.2水的盐含量校核........................................................................53.3pH的校核................................................................................53.4碱度的校核...............................................................................63.5硬度的校核...............................................................................64水处理系统设备选择...........................................................................74.1离子...