年产2.2万吨味精工厂初步工艺设计_毕业设计 推荐

沈阳化工大学本科毕业设计

题目：年产2.2万吨味精工厂初步工艺设计

院系：环境与生物工程学院

专业：生物工程

论文提交日期： 2011 年6月 24 日

论文答辩日期： 2011年 6月 29 日

毕业设计（论文）任务书

生物工程专业07-02班学生：吴皓

毕业设计（论文）题目：年产2.2万吨味精工厂初步工艺设计。

毕业设计（论文）内容：味精生产工艺流程的物料衡算、热量衡算、水衡算以及味精生产主要工艺流程工序的设计、设计味精生产的主要设备（发酵罐）的设计。

毕业设计（论文）专题部分：味精生产的工艺设计和发酵罐的设计。

起止时间：2011年3月---2011年6月

指导教师：签字年月日

教研主任：签字年月日学院院长：签字年月日

年产2.2万吨味精工厂初步工艺设计

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、利用谷氨酸生产细菌进行碳代谢、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，进行物料衡算、热量衡算、水衡算和发酵罐选型计算,并绘制了发酵罐结构图，发酵流程图，全厂平面布置图糖化流程图，提取与精制流程图.

设计的结果和目的主要是通过工艺流程及相关设备进行计算，设计出一个具有高产量，低能耗，污染小的现代化味精生产工厂。

本次设计是通过对味精生产的四个工艺流程的物料、热量和水进行了衡算和发酵罐选型计算，得到可行的数据，并且据此选取了合适的发酵生产设备以及合理的工艺流程进行味精的工厂生产，从而提高味精生产的质量和产量，降低了生产的成本,既为味精的工厂化生产的进步提供合理的理论依据,又为环境保护和可持续发展提供重要的数据支持,因此此次味精工厂初步工艺设计是较为必要的.

通过一系列计算,我们得出了此次毕业设计所需的重要数据:玉米淀粉为原料日产100% MSG 68.75吨，每日消耗的86%的玉米淀粉质量为102.12吨，日运转糖化罐2罐，投放料2罐次。

本次设计采用7台公称容积为200立方米的机械搅拌式发酵罐进行发酵，日运转6台。该发酵罐的具体技术参数为：高度为9.54m，罐体总高14.41m，罐身厚度14mm，封头壁厚16 mm，选用六平叶涡轮式搅拌器，搅拌器转数140r/min，搅拌轴功率2156kw，罐内工作压力0.15MPa。总蒸汽量330.4t/d，平均量13.8t/h，高峰时用量36.9t/h。日供给新鲜水12766.1t，二次水15413t/d，凝结水131.01t/d，每日排水15256t。从而完成了年产2.2万吨味精工厂初步工艺设计。

由于此次味精工厂设计仅限于理论计算和模拟的运行数据,对于现实的生产只存在指导和借鉴意义,其实用性有待在生活生产中进行进一步可行性测试和研究.

关键词：味精；发酵；工艺设计; 发酵罐;

Annual production capacity of 22000 tons

of monosodium glutamate factory preliminary process

design

Abstract

The design is an annual output of 22,000 tons of monosodium glutamate for material balance calculation , heat balance calculation, water balance calculation and the selection calculation of fermentor, 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 material balance calculation , heat balance calculation, water balance calculation and the selection calculation of fermentor, and mapped the structure of fermentation tank, fermentation process with control point map, the factory floor plan , saccharification process map and the process map of extraction and purification .

The result of the design and the destination of the process is to conceive a high yield, low energy consumption and the production of small pollution MSG plant modernization.

This design is to get the feasible data through the four phase calculation, including the material balance calculation , heat balance calculation, water balance calculation and the selection calculation of fermentor, based on which we chose the factory of suitable fermentation production equipment and the reasonable technological processes to produce, in order to improve the quality and output and to low the cost at the same time, both giving the reasonable theory base to the progress of factory production of monosodium glutamate and providing the data support to the environment protection and sustainable development .So, the factory preliminary process design is comparative necessary.

After a series of calculation, we gain the following important data required for this design: the mass of the 100% MSG with corn starch as raw material is 68.75 t, the mass of 86% corn starch is 102.12t, the number of tank needed to work is 2, which demands of 2 times of filling.

This design adopts 7 mechanical agitated fermentor with the nominal of 200m³ to ferment, with 6 operating a day.This kind of fermentor technical parameters is as follow : The height is 9.54mm, the main height of can body is 14.41mm, the thickness is14 mm, the thickness of end socket is16 mm, the revolving speed is 140r/min, the shaft power is2156 kw, the working pressure inside the tank is 0.15MPa. The total quantity of steam is330.4 t/d, the average is 13.8t/h, peak consumption is36.9 t/h. the fresh water is2766.1 t/d,