文档介绍：材料与化学工程学院
本科毕业论文
课题名称: 年产40000吨PVA聚合二塔系
统设计专业: 高分子材料与工程
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2013年6月
摘要
聚乙烯醇(PVA)是一种水溶性高分子聚合物,其性能独特,具有较佳的强力粘接性、皮膜柔韧性、平滑性、耐油性、耐溶剂性、胶体保护性、气体阻隔性、耐磨性以及经特殊处理具有的耐水性等。广泛应用于纺织、食品、医药、建筑、木材加工、造纸、印刷、农业、高分子化工、生物工程等领域,具有十分优良的应用前景。所以对于高分子专业的学生,掌握其工艺技术变得十分重要。
本文首先介绍了聚乙烯醇的国内外的发展状况以及制备工艺(工艺部分主要是电石乙炔法制备工艺),然后着重介绍安徽皖维公司生产聚乙烯醇过程中的聚合精馏新技术,并对我国聚乙烯醇的发展提出了几点建议。在充分文献调研的基础上,利用《化工原理》理论知识和结合生产实际情况,对年产40000吨聚乙烯醇聚合工序中二塔系统进行了系统的设计,包括塔工艺条件的设计、塔附件的设计、塔总体高度的设计、附属设备的设计等。
关键词:聚乙烯醇,物料衡算,热量衡算,聚合二塔的设计
Abstract
Polyvinyl alcohol (PVA) is a water-soluble polymers,it have unique properties,such as strong adhesion,membrane flexibility,smoothness,oil resistance,solvent resistance,protective colloid,gas barrier,wear resistance and specially treated with water resistance and so on. they are widely used in textile,food, medicine,construction,wood processing,paper making,printing,agriculture, polymer chemistry,biotechnology and other fields,which have very good prospects. Is very important for students of polymer science and engineering department to grasp their production technology.
This paper firstly introduces the development status and the preparation process of polyvinyl alcohol (PVA) at home and abroad (Main processes of calcium carbide is prepared by acetylene). Then the new technology in the process of polymer distillation of production polyvinyl alcohol (PVA) of AnHui pany is introduced emphatically with some suggestions to the development of polyvinyl alcohol (PVA). Finally, combining the knowledge of 《The principles of chemical engineering》 and actual production condition,the second distillation tower in polymerization system with an annual output of 40000 tons prehensively designed,including the process conditions,annex of distillation,the tower height,overall auxiliary equipments.
Keyword:PVA, mass balance, energy balance, The second distillation design
目录
第1章综述 1
概述 1
聚乙烯醇的性能 1
聚乙烯醇的基本信息 1
乙烯醇的性状 1
聚乙烯醇的毒性 2
聚乙烯醇的常用数