味精工艺设计

年产2万吨味精工艺设计

XXX

（XXX学院化工专业XXX班，陕西 汉中 723001）

指导教师：XXX

[摘 要]：本设计是年产2万吨味精工艺设计；以玉米淀粉为原料水解生成葡萄糖、利用谷氨酸生产菌进行

碳代谢、生物合成谷氨酸、谷氨酸与碱作用生成谷氨酸一钠即味精为主体工艺，进行工艺计算、物料衡算、热量衡算、设备选型，并绘制了等电罐结构图，发酵工序带控制点图，糖化工序图，工厂平面布置图。

[关键词]：味精；发酵；工艺设计

Annual production capacity of 20000 tons of monosodium glutamate process design

WANG Xiao-fei

(Grade06, Class 1, Major of Chemical Engineering and Technique College of Chemical and environment

science of Shaanxi University of Technology,Hanzhong 723001,Shaanxi)

Tutor: LI Zhi-zhou

ABSTRACT：The design is an annual output of 20,000 tons of monosodium glutamate process design; To

hydrolysis of corn starch as raw materials to generate glucose, glutamic acid producing bacteria to use carbon metabolism, biosynthesis of glutamic acid, glutamic acid and alkali to form a sodium glutamate or MSG is the main process,*for process calculation, material balance calculation,heat balance calculation, equipment selection,and mapped the structure of isoelectric tank, fermentation processes with control point map, the factory floor plan, saccharification process map.

Key Words：MSG, Fermentation, Process Design

目 录

摘 要 ........................................................................................................... I ABSTRACT ................................................................................................ II 1.总 论 ......................................................................................................... 1

1.1项目依据 ...................................................................................................... 1 1.1.1课题背景及味精概述 ............................................................................ 1 1.1.2味精产业概况 ........................................................................................ 1 1.1.3味精需求现状 ........................................................................................ 2 1.2设计原则 ...................................................................................................... 2 1.3设计任务 ...................................................................................................... 3 1.4厂制概况 ...................................................................................................... 3 1.4.1工厂组织 ................................................................................................ 3 1.4.2工作制度 ................................................................................................ 3 1.4.3人员配备 ................................................................................................ 3 1.5厂址选择 ...................................................................................................... 3 1.5.1 建厂依据 ............................................................................................... 3 1.5.2 指导方针 ............................................................................................... 3 1.5.3 选厂经过 ............................................................................................... 4 1.6 环境保护剂废物处理 ................................................................................. 4

2.工艺设计 ................................................................................................... 6

2.1工艺流程设计 .............................................................................................. 6 2.1.1 工艺流程设计的重要性 ....................................................................... 6 2.1.2 工艺流程设计的原则 ........................................................................... 6 2.1.3 工艺流程设计 ....................................................................................... 6 2.2玉米制备淀粉工艺 ...................................................................................... 7 2.2.1湿法玉米淀粉制备工艺过程 ................................................................ 7 2.2.2湿法玉米淀粉生产的主要设备 ............................................................ 8 2.2.3玉米淀粉生产工艺技术指标 ................................................................ 8 2.3淀粉糖化工艺 .............................................................................................. 9 2.3.1概述 ........................................................................................................ 9 2.3.2一次喷射双酶法制糖工艺流程 ............................................................ 9 2.3.3一次喷射双酶法制糖工艺控制要点 .................................................... 9 2.4发酵工艺 .................................................................................................... 10 2.5谷氨酸提取工艺 ........................................................................................ 10 2.5.1概述 ...................................................................................................... 10 2.5.2谷氨酸发酵液的特征和主要成分 ...................................................... 10 2.5.3等电点—离子交换法提取谷氨酸 ...................................................... 11 2.6谷氨酸制造味精工艺 ................................................................................ 12

3.物料衡算 ................................................................................................. 13

3.1生产过程的总物料衡算 ............................................................................ 13 3.1.1生产能力 .............................................................................................. 13

3.1.2计算指标（以淀粉质为原料） .......................................................... 13 3.1.3物料衡算 .............................................................................................. 13 3.1.4总物料衡算结果 .................................................................................. 14 3.2制糖工序的物料衡算 ................................................................................ 14 3.3发酵工序的物料衡算 ................................................................................ 15 3.4谷氨酸提取车间物料衡算 ........................................................................ 17 3.4.1中和等电工序 ...................................................................................... 17 3.4.2离交工序 .............................................................................................. 18 3.4.3提取车间物料衡算验算 ...................................................................... 18 3.5精制车间物料衡算 .................................................................................... 19 3.5.1中和脱色工序物料衡算 ...................................................................... 19 3.5.2精制（结晶）工序物料衡算 .............................................................. 20 3.6精制生产过程物料衡算图 ........................................................................ 20

4.热量衡算 ................................................................................................. 23

4.1液化工序热量衡算 .................................................................................... 23 4.1.1液化加热用蒸汽量 .............................................................................. 23 4.1.2液化液冷却用水量 .............................................................................. 23 4.2糖化工序热平衡说明 ................................................................................ 23 4.3连续灭菌和发酵工序热量衡算 ................................................................ 23 4.3.1培养液连续灭菌用蒸汽量 .................................................................. 23 4.3.2培养液冷却用水量 .............................................................................. 24 4.3.3发酵罐空罐灭菌用蒸汽量 .................................................................. 24 4.3.4发酵过程产生的热量及冷却用水量 .................................................. 25 4.4谷氨酸提取工序冷量衡算 ........................................................................ 25 4.5谷氨酸钠溶液浓缩结晶过程的热量衡算 ................................................ 25 4.5.1热平衡与计算蒸汽加热量 .................................................................. 26 4.5.2二次蒸汽冷凝所消耗循环冷却水量 .................................................. 26 4.6干燥过程的热量衡算 ................................................................................ 27 4.7溴化锂制冷机所用蒸汽量 ........................................................................ 28 4.8生产过程耗用蒸汽衡算汇总 .................................................................... 28

5.水平衡 ..................................................................................................... 29

5.1糖化工序用水量 ........................................................................................ 29 5.2发酵配料及培养基灭菌后冷却用水量 .................................................... 29 5.3发酵过程冷却用水量 ................................................................................ 29 5.4谷氨酸提取工序冷却用水量 .................................................................... 29 5.5中和脱色工序用水量 ................................................................................ 29 5.6精制工序用水量 ........................................................................................ 29 5.7动力工序用水量 ........................................................................................ 29 5.8用水量汇总 ................................................................................................ 29

6.主要设备选型及计算 ............................................................................. 31

6.1罐的选择 .................................................................................................... 31

6.1.1发酵罐 .................................................................................................. 31 6.1.2种子罐 .................................................................................................. 33 6.1.3离子交换柱 .......................................................................................... 34 6.1.4尿素罐 .................................................................................................. 36 6.1.5等电罐 .................................................................................................. 36 6.1.6油罐 ...................................................................................................... 37 6.2泵的选择 .................................................................................................... 37 6.3空气系统选择 ............................................................................................ 37 6.3.1流程选择的原则 .................................................................................. 37 6.3.2空气净化设备流程 .............................................................................. 37 6.3.3具体设备要求 ...................................................................................... 37 6.4容器、槽的选择 ........................................................................................ 39 6.5其他设备的选择 ........................................................................................ 39 6.6辅助设备选择 ............................................................................................ 40

7.全厂总平面设计 ..................................................... 错误！未定义书签。

7.1总平面设计任务和步骤 ............................................................................ 44 7.1.1总平面设计任务 .................................................................................. 44 7.1.2工厂组织 .............................................................................................. 44 7.2总平面布置评述 ........................................................................................ 44 7.3工厂布置原则 ............................................................................................ 45 7.4竖向布置原则 ............................................................................................ 45 7.5设备布置的原则 ........................................................................................ 46 7.6厂区管线布置原则 .................................................................................... 46

8.设计结果 ................................................................................................. 47

8.1设计成果 .................................................................................................... 47 8.2 关键设备一览图 ....................................................................................... 47

总结 ............................................................................................................ 48 致谢 ............................................................................................................ 49 参考文献 .................................................................................................... 50 附录 ............................................................................................................ 51

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