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1、異型豎板式降膜蒸發(fā)器的設(shè)計(jì)摘要我國是世界上生產(chǎn)乳類產(chǎn)品的大國,特別是奶粉產(chǎn)品的加工生產(chǎn)在我國的食品加工行業(yè)內(nèi)具有重要地位。因此,為了創(chuàng)造更高的商品價(jià)值和生產(chǎn)效率,我國的食品機(jī)械設(shè)計(jì)人員不斷實(shí)現(xiàn)加工設(shè)備的技術(shù)創(chuàng)新與改進(jìn)。近年來,降膜式異形豎板蒸發(fā)器脫穎而出,在奶粉加工設(shè)備的濃縮環(huán)節(jié)被廣泛使用,并且獲得好評(píng)。降膜式異形豎板蒸發(fā)器是根據(jù)薄膜傳熱理論和板式換熱器原理發(fā)展起來的一種高效,節(jié)能、新型蒸發(fā)設(shè)備,它與管式降膜蒸發(fā)器相比,具有傳熱效率高傳熱效率高、物料受熱時(shí)間短、掛料量少、不易結(jié)垢且結(jié)垢易清洗等諸多優(yōu)點(diǎn)。但是,由降膜式異形豎板蒸發(fā)器為濃縮設(shè)備的全套奶粉生產(chǎn)設(shè)備的設(shè)
2、計(jì)及其規(guī)范仍處初步發(fā)展階段,尚待研究與發(fā)展。本文核心以降膜式異型豎板蒸發(fā)器為濃縮設(shè)備的全套奶粉生產(chǎn)設(shè)備進(jìn)行結(jié)構(gòu)與選型設(shè)計(jì)。關(guān)鍵詞:異型豎板式降膜蒸發(fā)器DesignonFallingFilmEvaporatorinIrregular-shapedRiserABSTRACTOurcountryistheworldproductionofproductsofthebigcountry,breastmilkpowderproductsprocessingandproduction,especiallyinthefoodprocessingindustryinourcou
3、ntryhastheimportantposition.Therefore,inordertocreatehighercommodityvalueandtheproductionefficiency,ourcountry'sfoodmachinerydesignpersonnelcontinuouslyrealizesprocessingequipmentoftechnologyinnovationandimprovement.Inrecentyears,fallingfilmtypeabnormityverticalboardevaporatorstandou
4、t,milkpowderprocessingequipmentintheconcentrationofthelinktobeusedextensively,andhaswongoodcomments.Fallingfilmtypeabnormityverticalboardevaporatorisaccordingtofilmheattransfertheoryandplateheatexchangerprincipledevelopedakindofhighefficiency,energysaving,newevaporationequipment,itan
5、dtubetypedropmembraneevaporator,comparedwithheattransferefficiencyhighheattransferefficiencyhigh,rawmaterialisheatedtimeisshort,hangshoesfew,isnoteasytobescalingandscalingeasytoclean,andmanyotheradvantages.But,byfallingfilmtypeabnormityverticalboardevaporatorforthefullsetoftheconcent
6、rationequipmentproductionequipmentdesignanditsmilkpowdercriterionstillpreliminarystageofdevelopment,placeistoresearchanddevelopment.Thispapercoretofallingfilmtypedifferentverticalboardevaporatorforthefullsetoftheconcentrationequipmentproductionequipmentmilkpowderstructureandtypedesig
7、n.Keywords:DifferentverticalplateFallingfilmEvaporator目錄前言1第一章流程設(shè)計(jì)21.1全套奶粉生產(chǎn)設(shè)備的工藝流程設(shè)計(jì)21.2濃縮設(shè)備的生產(chǎn)工藝流程設(shè)計(jì)2第二章工藝計(jì)算42.1設(shè)計(jì)要求42.1.1加工對(duì)象42.1.2操作條件42.2濃縮設(shè)備傳熱面積的計(jì)算52.2.1各效二次蒸汽蒸發(fā)量計(jì)算52.2.2第二效蒸發(fā)器進(jìn)料濃度B1的計(jì)算62.2.3通入生蒸汽量的計(jì)算62.2.4傳熱面積的初步計(jì)算72.2.5傳熱面積的校核與取值82.3換熱板上液相回流量的計(jì)算122.3.1判定原理122.3.2回流量的計(jì)算132.4全套
8、設(shè)備的熱性能142.4.