海水脱硫中吸收塔脱硫效率的研究

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1、嫣’天毕又蓼+目《n第一∥^}TIANdINUNIVERSITY博士学位论文■■～一⋯i舢■■■一一级学科鎏巍茔学科专业：建遗拄苤型茔作者姓名：旦圭生指导教师：途堂盔堑埕干津士堂砰睿幸瞎2005年f月摘要ABSTRACTByfar，therewereonlytwopowerstationsinChina，inwhichSeawaterdesulphurizationtechniquewereused，Theirdesignandconstructionwerea11carriedbyforeigncoun

2、triesInthisdissertationF1akt—Hydrotechniqueisinvestigatedbvbothsimulationandexperiment．Themainworkandresultsareasf0110ws．1．ThesimulationofseawaterdesulDhurizationTheseawaterdesulphurizationischemicabsorption，andit’ssimulationresultbyASPENPLUSshowsthattheb

3、iggerratioofliquidtogasis，thehigherdesulphurizationefficiencybecomes．Themorealkalinity(especiallyHCOJ—inthesea)thereis，thehigherefficiencyreaches．ThemoreS02thereisintheinlet，thelowertheefficiencywillbe．Thetemperatureaffectsefficiencyclearly，too．Aftersatis

4、fiedthesmokeoutinthechimneyandvapornotdewing，thesmoketemperatureshouldbeloweredproperly．Theanionintheseawater，exclusiveHCO3一andC0{2。．affectstheefficiencylightly．Natriumionintheseacanimprovethedesulphurizationability，andotherpositiveionsdonotaffectit．2．The

5、experimentstudyofdesulphurizationIntheexperiment，wevalidatethecorreetnessofabovesimulationresult．Furthermore，wecontrastPal】RingandplasticMellapakStructuredpacking．Theresultshowsthatnotonlytheratiooftheareatov01ume，buta1sothera“ooftowerdiametertopackingdia

6、metercanaffectthedesulphurizationefficiency．WhenD／d=16，it’sefficiencyishigherthanbothofD／d=1Oandd／d=25．ForStructuredPacking。theefficiencyismainlyrelativetoL／G．The1argertheratioofareatovolumeis，thehigherefficiencyreaches．TobothrandompackingandStructuredpac

7、king，thethicknessofthepackaffectstheefficiencyIIloregreatly．ThethickerⅡ煎茎一——packingis，thehighertheeffiCiencybecomes·3．ThestudYofeffectoftheseawateI"deSUlphurizatiOntechl3iquetoseaSeveraleffectsbroughtbyse￡twateTdesu]_phurizat．ionareasbelow．ThepHbecomeslow

8、eraroundthedraJ．npointirlthesea．ItalSOheighteiqstheCOD。EtFIdreduCeSDO．Atthesametirile．itmakestheSe￡twat．erteml3eraturehigher，andenhancestheSOd2一conicenti13theseO．．PartofheavymetalSinthecoalaredrainedtosea．afterburni