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毕业论文作者：学号：学院：专业：生物工程题目：年产25万吨酒精工厂的设计指导者：2010年6月吉林摘要I年产25万吨酒精工厂的设计摘要本设计为年产25万吨酒精工厂的设计计。依据东北地区的特点选择以玉米为原料，厂址选择在有“玉米黄金带”之称的吉林省吉林市郊区。工艺上的设计为：双酶法液化糖化工艺(提高淀粉利用率)、连续发酵工艺（提高生产效率）、五塔压差蒸馏工艺（保证产品质量及提高热能利用率）、分子筛工艺，通过物料衡算、设备选型计算、水电汽耗的计算等合理优化设计生产工艺过程。其中采出酒精量33205.625kg/h，玉米粉量78773.75kg/h，闪蒸量9165.825kg/h，蒸汽消耗量92032.45kg/h，蒸馏工段总耗水量176377.775kg/h。关键词：食用酒精，液化糖化，发酵，蒸馏东北电力大学学士学位毕业论文IIWithanAnnualOutputof10,000EdibleethylalcoholFactoryDesign—SectionKey:ToppingstillSectionAbstractThedesignforanannualoutputof100,000tonsoffuelethanolplantdesign,whichfocusesonsectionforthetoppingstill.Basedonthecharacteristicsofthenortheasternregionchoosetocornasrawmaterial,thesitechosenina“goldenmaizebelt”,saidtheoutskirtsofSipingCity,JilinProvince.Theprocessisdesignedto:double-glycosylatedenzymaticliquefactiontechnology（reducedtheheatenergyloss）,continuousfermentationprocess（enhancedtheproductionefficiency）,thefivetowerspressuredistillationtechnology（bothguaranteedtheproductqualityandtoraisetheheatenergyusefactor）,molecularsievetechnology,throughthematerialbalance,equipmentselection,thewaterconsumptionofelectricalcalculations,todesignareasonableoptimalprocess.Including：productionofalcohol33205.625kg/h，theamountofcornflour78773.75kg/h，theamountofflash9165.825kg/h，Steamconsumption92032.45kg/h，totalwaterconsumptionofdistillationSection176377.775kg/h.Keyword:Edibleethylalcohol，Fluidsaccharification，Fermentation，Distillation目录I目录第1章绪论................................................................................11.1中国酒精工业的发展历史...........................................................................21.2酒精生产的主要问题...................................................................................21.3解决酒精生产问题的对策...........................................错误!未定义书签。1.4国内外酒精生产技术水平比较分析...........................................................3第2章设计概论................................................................................42.1毕业设计的目的...........................................................................................42.2毕业设计的题目...........................................................................................42.3毕业设计的任务...........................................................................................42.4设计的指导思想...........................................................................................52.5设计的依据...................................................................................................52.6生产方案的确定和产品方案.......................................................................52.7厂址选择.......................................................................................................52.8原料来源、规格及标准...............................................................................82.9主要辅料的质量标准...................................................................................92.10水的质量标准（外观理化指标及要求）..............................................102.11成品品种及质量标准................................................................................122.12主要工艺技术参数....................................................................................122.13生产工作制度...........................................................................................132.14环保措施...................................................................................................132.14.1CO2回收利用...................................................................................132.14.2杂醇油回收......................................................................................142.14.3液体、固体CO2(干冰)的制备和贮运.........................................142.14.4酵母回收..........................................................................................142.14.5酒精糟回收......................................................................................15第3章酒精生产工艺流程的设计及说明................................................163.1酒精的性质、用途及生产方法概述.........................................................163.1.1性质....................................................................................................163.1.2用途....................................................................................................163.1.3玉米原料生产酒精流程....................................................................163.2酒精生产工艺流程的确定.........................................................................163.3工艺条件及说明.........................................................................................173.3.1玉米粉供应工序................................................................................173.3.2液化糖化工序.....................................................................................173.3.3发酵工序.............................................................................................183.3.4酒精蒸馏.............................................................................................19第4章酒精生产过程中的物料和热量衡算.............................................244.1物料及热量衡算.........................................................................................244.1.1成熟醪量的计算...............................