基于有机朗肯循环的铝电解槽烟气余热发电技术研究

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1、中南大学硕士学位论文基于有机朗肯循环的铝电解槽烟气余热发电技术研究姓名：柯文申请学位级别：硕士专业：热能工程指导教师：周乃君20090401ABSTRACTWriththerapiddevelopmentofourcountry'seconomy,thecontradictionofarelativeshortageofenergyhasbecomeoneofthemostimportantlimitedfactorswhichaffectthedevelopmentofeconomyandsociety．Currently,researchand

2、developmentonenergysavingtechnologiesofindustrialprocesshaveimportantpracticalsignificance．Inrecentyears，electrolyticaluminiumindustryhavebeendevelopedfastinourcountry,andtheprimaryproductionisatthefirstplaceofthewholeworld．Electrolyticaluminiumindustryhashighenergyconsumption

3、asintensiveresourceandenergyenterprises，andthepowersavingisitsetemaltheme．A1argenumberoflow．temperatureflueemissionsfromprocessofaluminiumreduction，whichheatlOSSoftheflueawaytroughsystemgenerallyis20％～35％bytotalenergyexpenditure．Basedonthecharacteristicsofthefluegasfromaluminu

4、mreductioncells，atechnologyprototypeofwasteheatpowergenerationforaluminumreductioncells’flueonthebasisoforganicrankinecyclewasproposed，whichprovidesanewthoughtforenergysavingandemissionreductionofelectrolyticaluminumindustry．Basedonsu伍cientinvestigationfortherelativefieldathom

5、eandabroad，withatypicalfluesystemof200kAseries’aluminumreductioncellsinafactory,wasteheatpowergenerationsystembasedonrankinecyclewasbuilt．Relevantmathematicsmodelswereestablishedbasedonthefirstandsecondlawofthermodynamics．Withtheaimofensuringoptimalsystemperformance，screeninga

6、ndoptimizationanalysisforworkingfluidsweredone，andthemostadaptableoneisisopentanewhichwasselectedasthecyclefluidinthesystem．Themainequipmentinthesystemwereselected，whichincludesthatatypeofnon-standardturbinewithlowboilingpointworkingfluidsisonewithsingle‘classsingle．cylinderco

7、ndensingsteamimpulse，theevaporatorisspiralfintubeexchangerandthecondenserisfixedtubesheetexchanger．Andthenthestructureandworkingparametersofthemainequipmentwerell中南大学硕士学位论文ABSTRACTresearchedanddesigned．Throughtheoreticalcalculations，theresultsshowthattheratedpowerofsystemis600

8、kW,thecycleefficiencyis7．5％，theareaofevaporatoriS2000mz，thear