年产5万吨味精糖化工段设计

年产5万吨味精糖化工段设计

摘要

味精，学名“谷氨酸钠（C5H8NO4Na）”。谷氨酸是氨基酸的一种，也是蛋白质的最后分解产物。我们每天吃的食盐用水冲淡400 倍，已感觉不出咸味，普通蔗糖用水冲淡200 倍，也感觉不出甜味了，但谷氨酸钠，用于水稀释3000倍，仍能感觉到鲜味，因而得名“味精”。

谷氨酸是利用微生物发酵生产的一个具有代表性的产品，生产工艺涉及种子培养、发酵、提取、脱色、离心和干燥等重要的单元操作和工程概念。通过对谷氨酸车间的工艺设计，可以加强对自己对所学知识的综合利能力。

本设计是以精制淀粉（纯度为85.9%）为原料进行设计，使用一次喷射双酶法为糖化工艺，以年实际工作日300天计算，日产味精165吨。对全厂物料进行了衡算，对糖化工段的罐体如糖化罐进行了详细计算，以确定它的参数，便于设备布置图的绘制。 关键词：谷氨酸钠；糖化；工艺计算

年产5万吨味精糖化工段设计

Abstract

Monosodium glutamate (MSG) is the sodium salt of the non-essential amino acid glutamic acid，which is the final resolve product from protein. If we dilute the salt with 400 times water, we can’t taste salty any more. If we dilute the sucrose with 200 times water, we can’t taste sweetness too. But even if 3000 times water, Monosodium glutamate still taste flavor. Glutamate is produced by microbial fermentation of a representative of the products, production processes involved in seed culture, fermentation, extraction, bleaching, centrifugation and drying unit operations and other important engineering concepts.Through the workshop process design glutamate, can enhance their knowledge of the comprehensive profitability.

The design is based on refined starch (85.9% purity) as raw materials for the design, the use of a jet of two enzymes for the saccharification process, the actual working days to 300 days calculated at 165 tons of monosodium glutamate production.The whole plant materials for the balance, the chemical section of the tank, such as sugar saccharification tanks carried out a detailed calculation to determine its parameters, easy to draw the layout of the device. Key words:glutamate;saccharification;process calculation.

年产5万吨味精糖化工段设计

目 录

引言 ................................................................... 1 第一章 糖化工段工艺 .................................................... 1

1.1 味精简介 ....................................................... 1 1.2 设计方案的确定 ................................................. 2

1.2.1 糖化方法的选择论证 ....................................... 2 1.2.2 液化工艺条件的论证 ....................................... 2 1.3 糖化工艺流程 ................................................... 3 1.4 糖化工艺技术要点 ............................................... 3

1.4.1 调浆配料 ................................................. 3 1.4.2 喷射液化 ................................................. 4 1.4.3 糖化 ..................................................... 4 1.4.4 过滤 ..................................................... 4 1.4.5 贮存 ..................................................... 4

第二章 糖化工段物料衡算 ................................................ 4

2.1 生产能力 ....................................................... 4 2.2 计算指标 ....................................................... 4 2.3 总物料衡算 ..................................................... 5

2.3.1 商品淀粉用量 ............................................. 5 2.3.2 糖化液量 ................................................. 5 2.3.3 产谷氨酸量 ............................................... 5 2.3.4 衡算结果汇总 ............................................. 6 2.4 糖化工段物料衡算 ............................................... 6

2.4.1 淀粉浆量及加水量 ......................................... 6 2.4.2 液化酶量 ................................................. 6 2.4.3 CaCl2量 .................................................. 6 2.4.4 糖化酶量 ................................................. 6 2.4.5 糖液产量 ................................................. 7 2.4.6 过滤糖渣量 ............................................... 7 2.4.7 生产过程进入的蒸汽冷凝水及洗水量 ......................... 7 2.4.8 衡算结果汇总 ............................................. 7

第三章 糖化工段设备选型 ................................................ 7

3.1 糖化罐 ......................................................... 7 3.2 调浆罐 ......................................................... 8 3.3 储浆罐 ......................................................... 9 3.4 连续液化喷射器 ................................................ 10 3.5 维持罐 ........................................................ 10 3.6 层流罐 ........................................................ 10 3.7 储糖罐 ........................................................ 10

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年产5万吨味精糖化工段设计

3.8 设备选型汇总 .................................................. 11 参考文献 .............................................................. 12 课程设计体会 .......................................................... 12 附图(糖化罐设备总装图)

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