钠碱再生循环脱硫液中金属离子的溶解平衡特性

《钠碱再生循环脱硫液中金属离子的溶解平衡特性》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、天津大学硕士学位论文钠碱再生循环脱硫液中金属离子的溶解平衡特性姓名：刘丽梅申请学位级别：硕士专业：环境工程指导教师：张书廷20070601ABSTRACTInfluegasdesulfurizationwithmembraneelectrolysisandsodiumalkalirecycling，sulfuricacidusedbroadlyasindustrialrawmaterialsisby-product．nequalityofsulfuricaciddecidesitsmarket；therefore,fordifferentkeyelemen

2、tcombinationthequalityofsulfuricacidisthebasicandnecessaryrequirementsforresourceofby-productositionandrelatedtotheactualapplicationofthedesulfurizationprocess。Theparticularityoftheregernarationoffertileliquorfromdesulfurizationprocessisthatthereexistdissolutionandprecipitationequ

3、ibriumsofmetalionsintheabsorbent．Precipitationwillaffecttheoperationofequipment；onotherhand，dissolutionwillaffecttheregenerationoftheby-product．Therelationshipsbetweentheexistencecharacteristicandmaximumcontentofmetalionsandtheoperafingconditionandthevariousmetalicioninterationala

4、ctionswereinvestigated．Firstofall，thesolubilityforvarioussinglemetalionindifferentconcentrationsulfuricacidliquorWastheoreticallyanalyzed，thenexperimentallydetermined,atlasttherelationsbetweenthemaximummetalionconcentrationinsulfuricacidliquorandtheoperatingconditions，theactualinp

5、utcontent,themeasuringconditionsandthepriciptationtimewereanalyzed．Theresultsfromexperimentsaboutrelationbetweenmaximummatalioncontentandoperatingconditionsshowedthatactualdosageofmetalelementinfluencedmetalioncontentinsulfuricacidsolutiongreatly．Formagnesium,aluminumandironions，t

6、heioncontentsinsolutionWereinagreement‘witlltheiractualdosage．Forlowqoncentrationsulfuricacidsolution,theactualamountofmagnesium,aluminumandironionsarelargerandmagnesian,aluminousandironioncontentsinthesolutionaregreater．For8．0％and98％sulfuricacid,theresultsarejusttheopposite．Forca

7、lciumion,whensulfuricacidconcentrationsare25％，40％，50％and80％，respectively,thedosageofaddedcalciumisgreater,andthecalciumioninsolutionissmaller．Whensulfuricacidconcentrationis80％，theactuallyaddeddosageofcalciumis1．06439／L，andthecalciumioncontentinthesolutionis0．691g／L．Differentmeasu

8、ringmethodshavegreatinfluenceonca