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1、北京理工大学珠海学院2010届本科生毕业设计年产10万吨柠檬酸厂糖化、发酵车间的设计摘要本设计采用薯干原料发酵,只需将薯干磨成粉,加水调浆,直接加入少量α-淀粉酶液化后灭菌、冷却即可接种发酵。制备柠檬酸一般采用晒干的薯干作为原料。其中薯干含水10%-15%、淀粉70%左右、蛋白质6%左右。薯干原料中的蛋白质可作为氮源供菌体生长。薯干原料中含有铁、镁、钾、钙等的无机盐,选用的黑曲霉C0527对这些成分不敏感,故不必对原料做这方面的预处理。本设计采用液体深层好氧发酵、钙盐法提取技术生产柠檬酸。这两种方法都是国内比较流行的生产方法,有着大量的实际经验,易于操作,风险小。由于本设计为
2、糖化、发酵车间的设计,着重于这两个车间的工艺计算、设备选型。通过全厂物料衡算、车间热量衡算,确定糖化、发酵车间主要设备发酵罐、种子罐、车间管道的设计和选型以及全厂及车间布置。本设计还包括发酵罐,全厂平面图,车间平面布置图,工艺流程图。关键词:薯干深层好氧发酵黑曲霉柠檬酸设备设计和选型VII北京理工大学珠海学院2010届本科生毕业设计Annualoutputof100,000tonscitricacidplantsaccharificationfermentation,fermentationplantdesignABSTRACTThedesignofrawmaterialsu
3、sedpotatofermentation,simplypotatomills,water-paste,addingasmallamountofdirectα-amylaseliquefaction,sterilization,cooling,fermentationcanbevaccinated.Preparationofcitricacidnormallyusedasrawmaterialsdriedpotato.Potatomoisturecontentof10%to15%,about70percentofstarch,proteinabout6percent.Pota
4、torawmaterialsintheproteincanbeusedassourceofnitrogenforcellgrowth.Potatorawmaterialscontainingiron,magnesium,potassium,calciumofinorganicsalt,optionalblackAspergillusnigerC0527isnotsensitivetotheseingredients,itneednotdoanypretreatmentoftherawmaterials.
Thedesignofagoodgasliquidsdeepfermen
5、tation,drycalciumcitrateextractiontechnologyproduction.Thetwomethodsaremorepopulardomesticproductionmethods,hasagreatdealofpracticalexperience,easytooperate,therisksmall.Asthedesignforthesaccharificationandfermentationworkshopthedesign,thetwoworkshopsfocusedontheprocess,theselectionofequipm
6、ent.Throughthewholeplantmaterialbalance,energybalanceworkshop,identifiedglycosylation,fermentationworkshopmajorequipmentfermenter,seedtanks,pipelinesandworkshopsinthedesignandselection.Andthewholeplantandfacilitylayout.ThedesignalsoincludesFermentor,Thefactoryplan,Shopfloorplan,FlowChart.Ke
7、ywords:PotatoDeep-seatedaerobicfermentationAspergillusnigerCitricacidEquipmentDesignandSelectionVII北京理工大学珠海学院2010届本科生毕业设计目录摘要……………………………………………………………………ⅠABSTRACT…………………………………………………………...Ⅱ1.引言……………………………………………………………...........11.1柠檬酸的性质和用途……………………………………………