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1、一級(jí)鍋爐水處理試題及答案（Watertreatmentquestionsandanswersofprimaryboiler）1theboilercaneffectivelyconvertthechemicalenergyinthefuelintotheheatenergyofthesteam.(V)thecorrectanswer2,thesaturatedsteamisactuallysteamwithmoisture,soitisalsocalledwetsteam.(V)thecorrectanswer
2、3,thecarbonicacidsaltsolutioniseasytodecomposecarbondioxideafterheating.(x)xanswererror4boileriscomposedoftwoparts:potandfurnace,inwhichthepotistheheatabsorbingpartthatmakeswaterintohotwaterorsteam.(V)thecorrectanswerWhenthechemicalreactionofthe5judgmentrea
3、chesequilibrium,theconcentrationofreactantandproductwillnotchangeanymore,indicatingthatthereactionhasstopped.(V)wronganswer6thecarbondioxideinwaterisapartofalkalinity,whichisnotharmfultotheboiler.(x)answercorrectly7determinetheproblemusuallyhydrogenatomvale
4、nce1,oxygenatomvalence2.(V)thecorrectanswer8thelowerthepH,thelowerthealkalinityofthewater.(V)thecorrectanswer9,theproblemofwaterintowatervaporbelongstochemicalchanges.(x)answercorrectly10toensurethatthewaterqualityoftheboilerisqualifiedisthepremisetomaintai
5、ngoodsteamquality.(V)thecorrectanswer11boilerwithsmallerwatervolume,suchastubularandDCcoiltypefuelboiler,canbesimplytreatedbyaddingchemicalsinthepot.(V)wronganswer12,thejudgmentofpurepotpluswatertreatmentisusuallyonlysuitableforsmalllow-pressureboiler.(V)th
6、ecorrectanswer13,whenthecontentofsuspendedsubstanceinrawwaterishigher,itwillpollutetheresinandaffecttheexchangecapacityofresin.Youransweriscorrect14,whenthesodiumcarbonateisusedasawatertreatmentagent,sodiumcarbonatecanprotectthemetalwithoutcorrosion.(V)wron
7、ganswer15determinethechemicaldeoxidizeranddissolvedoxygeninwaterredoxreaction,removedissolvedoxygen.(V)thecorrectanswer16judgmentofphosphoricacidthreesodiumcanbeproducedwithhardnesssubstanceseasytoremovesewageslag,sothepotwatershouldbemorephosphoricacidthre
8、esodium.(x)answercorrectly17theantiscalingeffectofcompoundantiscalingagentisbetterthanthatofsinglescaleinhibitor.(V)thecorrectanswer18theboilerwithaddingchemicalsinthepotshouldbedischargedasmuchaspossi
