糖蜜酒精蒸馏节能工艺和关键设备的分析

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1、程优化设计。通过分析各塔的物流信息绘制组合曲线，确定夹点位置。然后运用夹点技术理论指导热泵精憾，确定热泵在系统中合适的放置位置，最终得到一套高效节能低成本酒精蒸馆新工艺。本论文针对酒精蒸憾装置屮所存在的问题对关键设备进行了改进，在改进夹点技术理论的指导下对工艺流程进行了重组、操作参数进行了优化、并且运用了热泵精惚技术，得到一套高效节能低成本的酒精蒸丫留新工艺。矢键词：酒精，节能，模拟，塔板，热泵精徭，夹点技术ENERGYSAVINGOPTIMIZATIONFORMOLASSESALCOHOLDISTILLATIONPROCESSA

2、NDRELATIVEKEYEUIPMENTSABSTRACTAlcoholisakindofimportantorganicsolventandchemicalmaterialItoccupiesanimportantpositioninnationaleconomyandhasbeenwidelyusedinareasoffoodindustry,chemicalindustry,medicaltreatment,electronicindustry,cosmeticproductionandsoon.Molassesisaby

3、-productofsugarproductionwhileusedastherawmaterialofalcoholproduction.Therefore,usingmolassestoproducealcoholisarecyclingofwasteandofimportantsignificancetoenvironmentalprotectionaswellasenergysaving.Alcoholproductionisakindofenergyintensiveprocessandtheconsumptionofs

4、teamandcoolingwaterfordistillationoccupies60-70%ofthetotalenergyconsumption.Therefore,reductionoftheenergyconsumptionfordistillationisthekeytoreducetheenergyconsumptionofalcoholproduction.However,thetraditionaldistillationprocessofmolassesalcoholhasthedisadvantagesofh

5、ugeenergyconsumption,lowqualityandlaggingtechnologyforequipments.Itisnecessarytochangethecurrentstatusunderthesituationofenergycrisis.Thescaledepositintherawdistillatorofmolassesalcoholseriouslyinaffectstheefficiencyofdistillationandthecostofequipmentsmaintenance.Inor

6、dertosolvetheproblem,anewtypeofefficientanticloggingroundfixed-valvetraywasadoptedintheimprovedprocesswhichwasdevelopedbyZhejiangUniversityofTechnologyDesignResearchInstitute.Thehydrodynamicperformancesofthenewfixed-valvetrayweretestedandcomparedwiththetraditionalfix

7、ed-valvetray.Thesimulationoftraditionalthree-columndistillationprocessofmolassesalcoholwasconductedwiththesoftwareAspenPlus.Afour-columndistillationprocesswasproposedbyprocessrecombinationtheorybasedontheanalysisofsimulationresults.Thesimulationandoptimizationofthefou

8、r-coluinnprocesswereconductedwiththesoftware,andtheprocessingparameters,streamdataandheatdutywereobtained.Basedonthesimulati