聚乙烯醇生产工艺设计说明书.docx
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1、本科毕业设计说明书聚乙烯醇生产工艺设计THE DESIGN OF POLYVINYL ALCOHOL SYNTHESIS PROCESS学 院专业班级学生姓名指导教师 聚乙烯醇生产工艺设计摘要聚乙烯醇(PVA)是一种水溶性的高分子化合物。它具有较佳的黏接性、皮膜原料柔韧性、平滑性、耐油性、耐溶剂性、胶体保护性、气体阻绝性、耐磨性以及经特殊处理具有的耐水性等。其应用领域涉及纺织、食品、医药、建筑、造纸、印刷、农业等行业。本文主要介绍了年产6万吨聚乙烯醇的生产工艺设计。其工艺流程为:使用电石制备乙炔,合成醋酸乙烯酯后再将其聚合,得到聚醋酸乙烯酯,再将聚醋酸乙烯酯醇解得到聚乙烯醇。文章将整个的工艺流
2、程分为四个工段,并逐个对其进行物料衡算和能量衡算,从而得到每个阶段各种物料的进料量和出料量,以及冷却水或油的用量。之后对主要的设备的尺寸进行了计算,得到聚合釜的直径为3.4 m,高度为4.6774 m。最后用AutoCAD(Auto Computer Aided Design)画出了工艺流程图,聚合釜的尺寸图以及工厂布置图。关键词:聚乙烯醇,聚醋酸乙烯酯,醇解,工艺流程图,工艺设计THE DESIGN OF POLYVINYL ALCOHOL SYNTHESIS PROCESSABSTRACTPolyvinyl alcohol (PVA) is a water-soluble polymer.
3、 It has a better bonding strength resistance, coating material flexibility, smoothness, oil resistance, solvent resistance, protective colloid, gas block resistance, abrasion resistance, and after a special treatment it can resistant water. It can apply in textile, food, medicine, construction, pape
4、r, printing, agriculture and other industries.This paper describes the design of annual output of 60,000 tons of polyvinyl alcohol process. The process is, first prepared acetylene with calcium carbide, synthesis of vinyl acetate and then be polymerized to obtain poly vinyl acetate, and use it to pr
5、oduce polyvinyl alcohol. The whole process is divided into four steps in the article, and by calculating the material balance and energy balance of every steps, we can get the feed amount and the quantity of each step, as well as the amount of cooling water or oil. Then the dimensions of the major d
6、evice are calculated to obtain a polymerization vessel having a diameter of 3.4m, a height of 4.6774m.And also use AutoCAD to draw a flow chart, a polymerization vessel dimensions and plant design.KEYWORDS:Polyvinyl alcohol,polyvinyl acetate,alcohol solutions,process flow diagrams,process designII目录
7、摘要IABSTRACTI1绪论11.1聚乙烯醇的简介11.2聚乙烯醇的发展和应用11.3国外聚乙烯醇的生产消费状况11.3.1生产能力11.3.2消费状况11.4我国聚乙烯醇的生产消费状况11.4.1生产能力11.4.2消费状况11.5本文拟定的工作内容12聚乙烯醇的生产工艺过程12.1乙炔的制备12.2 醋酸乙烯酯的合成制备12.3聚醋酸乙烯酯的制备12.4 聚醋酸乙烯酯的醇解13物料衡算13.1数据资料收集13.2计算基准13.3按工艺流程计算每个阶段的物料衡算13.3.1 阶段一:乙炔的制备13.3.2 阶段二:醋酸乙烯酯的合成反应(反应器)13.3.3 阶段三:聚醋酸乙烯酯的制备(聚合
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