总酒精发酵技术分析.docx

《海南大学生物工程课程论文》年产2万吨木薯酒精工业设计说明书题目：年产2万吨木薯燃料酒精生产工艺的初步设计──酒精发酵工艺初步设计学院：材料与化工学院 专业：生物工程系 姓名：班级：生物工程一班 学号：201304123100 时间：2016年5月13号 指导老师：刘平怀 摘要········································绪论······································· 1.1设计概述·························· 1.1.1设计目的·················· 1.1.2设计依据······················· 1.1.3主要设计内容······················· 1.2木薯酒精发酵的前景与意义···························· 1.3海南发展木薯燃料酒精的优势························ 1.4目前酒精发酵的主要研究方向·························2.酒精发酵的机理··································· 2.1酵母酒精发酵的几个阶段······················ ··· 2.2酵母发酵过程的十二个反应··························3.发酵方案的选择、论证······················ ········· 3.1传统发酵技术······················ ········ 3.1.1间歇式发酵······························· 3.1.2补料分批发酵法（半连续法）························ 3.1.3连续发酵······································ 3.2新型发酵技术······················ ·· 3.2.1固定化酵母细胞发酵技术······················ 3.2.2真空发酵和气提发酵技术················ 3.2.3浓醪发酵······················· 3.2.4无蒸煮无糖化一步发酵················· 3.2.5透析膜发酵······················· 3.2.6萃取发酵························· 3.3发酵方案的选择及论证······················ ········· 3.4发酵流程························· 3.4.1：发酵罐的清洗······················ 3.4.2：发酵罐的灭菌·············· 3.4.3酒精捕集···················· 3.4.4 发酵成熟醪··························4.发酵过程参数设计与控制························ 4.1 发酵过程的控制指标··························· 4.2发酵后的放罐指标································ 4.3 发酵过程参数检测与控制····························· 4.4发酵过程中化学、生物学参数的控制····················· 4.5酒精发酵过程的其他影响因素及其控制和防治···················· 4.5.1乙醇浓度的影响·························· 4.5.2杂菌污染的影响及其防治·························5.酒精发酵过程的物料衡算及热量衡算································ 5.1物料衡算 5.1.1工艺技术指标及基础数据 5.1.2原料消耗的计算 5.1.3蒸煮醪量的计算 5.1.4糖化醪与发酵醪量的计算 5.1.5年产20000吨木薯干原料酒精厂总物料衡算 5.2热量衡算 5.2.1发酵过程产热