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ID:57226314
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页数:55页
时间:2020-08-04
《电厂化学概述课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、电厂化学概述西北发电运行有限责任公司一电厂化学概述-电厂化学所担负的任务(1)制备充足并且合格的除盐水(1)Preparingsufficientandqualifiedwater;(2)通过加药处理锅炉给水、炉水,防止和减缓热力系统结垢、腐蚀和积盐,并保证蒸汽品质优良(2)Treatingboilerfeedwaterandboilerwaterthroughchemicaldosing,preventingandslowingdownscaling,corrosionandsaltdepositionin
2、thermodynamicsystem,andensuringgoodsteamquality.(3)对凝结水进行精处理,深度除盐、消除机组的腐蚀产物,消除或缓冲冷却水漏入凝结水所造成的危害(4)通过加药处理循环冷却水,防止和减缓凝汽器冷却水管以及其他冷却水系统的腐蚀和结垢(4)Treatingcirculatingcoolingwaterthroughchemicaldosing,preventingandslowingdowncorrosionandscalingincoppertubeofcondens
3、erandothercoolingwatersystems.(5)通过汽水的在线监督和定期的化验分析,不断调整和优化水处理工艺及加药调节,保证汽水品质(5)Continuouslyadjustingandoptimizingwatertreatmentprocessandchemicaldosingregulationandensuringsteamandwaterqualitythroughon-linesupervisionandperiodicchemicalanalysisofsteamandwate
4、r.(6)通过对煤样的采集、制备和分析化验,给出可靠的煤质监督数据;(7)通过对汽轮机油、变压器油的化验分析和必要的处理,保证油品合格(7)Ensuringeligibleoilqualitythroughchemicalanalysisandnecessarytreatmentforsteamturbineoilandtransformeroil.(8)机组停运保养:它与水处理工作也密切相关。它包括机组停运前对热力系统进行加药处理等工作。(8)Outagemaintenanceofunit:closelyr
5、elatingtowatertreatment,andincludingworklikechemicaldosingtreatmentonthermodynamicsystemandsoonbeforeunitoutage.(9)化学清洗:当锅炉水冷壁结垢量超标时,必须对锅炉本体进行化学清洗。在化学清洗过程中,要求在不同阶段提供不同质量的水,因此水处理工作是保证化学清洗效果的重要因素之一。(9)Chemicalcleaning:whenscalingonboilerwaterwallexceedsthesta
6、ndard,itmustmakechemicalcleaningfortheboilerproper.Intheprocessofchemicalcleaning,itisrequiredtosupplywaterofdifferentqualitiesindifferentstages,sowatertreatmentisoneoftheimportantfactorsthatensurechemicalcleaningeffect.(10)废水处理回收(10)Treatmentandreclamation
7、ofwastewater1.Boiler;2.Steamturbine;3.Generator;4.Condenser;5.Condensatepump;6.LPheater;7.Deaerator;8.Feedwaterpump;9.HPheater;10.Make-upwatertreatmentequipment;11CoolingwaterpumpSuperheatedsteamCondensateCoolingwater1971110241165823FeedwaterExtractedsteamf
8、romsteamturbineFlowprocessdiagramofthermodynamicsysteminpowerplant一、电厂化学概述-汽水循环1.1汽水循环:化学补水至凝汽器→低加→除氧器→给水泵→高加→省煤器→汽水分离器→过热器→汽轮机→凝汽器1.1Steamandwatercirculation:Chemicalmake-upwatertocondenser→LPheater→D
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