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1、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CC-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。由于本设计为糖化、发酵车间的设
2、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Annualoutputof100,000tonscitricacidplantsaccharificationfermentation,fermentationplantdesignABSTRACTThedesignofrawmaterialsusedpotatofermentation,
3、simplypotatomills,water-paste,addingasmal1amountofdirecta~amylase1iquefaction,sterilization,cooling,fermentationcanbevaccinated.Preparationofcitricacidnormallyusedasrawmaterialsdriedpotato.Potatomoisturecontentof10%to15%,about70percentofstarch,proteinabout6percent.Potatorawmater
4、ialsintheproteincanbeusedassourceofnitrogenforcel1growth.Potatorawmaterialscontainingiron,magnesium,potassium,calciumofinorganicsalt,optionalblackAspergi1lusnigerC0527isnotsensitivetotheseingredients,itneednotdoanypretreatmentoftherawmaterials.Thedesignofagoodgas1iquidsdeepferme
5、ntation,drycalciumcitrateextractiontechnologyproduction.Thetwomethodsaremorepopulardomesticproductionmethods,hasagreatdealofpracticalexperience,easytooperate,therisksmal1.Asthedesignforthesaccharificationandfermentationworkshopthedesign,thetwoworkshopsfocusedontheprocess,thesele
6、ctionofequipment.Throughthewholeplantmaterialbalance,energybalanceworkshop,identifiedglycosylation,fermentationworkshopmajorequipmentfermenter,seedtanks,pipelinesandworkshopsinthedesignandselection.Andthewholeplantandfacilitylayout.ThedesignalsoincludesFermentor,Thefactoryplan,S
7、hopfloorplan,FlowChart.Keywords:PotatoDeep-seatedaerobicfermentationAspergi1lusnigerCitricacidEquipmentDesignandSelection摘要ABSTRACTII1.引言11.1柠檬酸的性质和用途11.2柠檬酸的来源和发展情况12•生产工艺2.1生产方法2.2生产流程in1.3.1原料的处理32.3.2发酵工序...32.3.3醪液处理工序32.3.4提取工段32.3.5精制工段43.工艺计算书53.1物料衡算53.1.1工艺技术指标及基础数据53.
8、1.2原料消耗计算(基准:1吨成品柠檬酸)2.1.3发酵醪量的计算61.1.5液化醪量的计算6