发布时间 : 星期一 文章聚合物合成工艺设计作业更新完毕开始阅读e43925e55901020206409cc4
聚合物合成工艺设计结课作业
湖南工学院
年产5万吨聚苯乙烯聚合工段工艺设计
小组成员：严 智 龙 坚
指导教师：谭 茜
聚合物合成工艺设计结课作业
摘 要
可发性聚苯乙烯（Expandable PolyStyrene，简称EPS）通称聚苯乙烯和苯乙烯系共聚物，是一种树脂与物理性发泡剂和其它添加剂的混合物。最常见的可发性聚苯乙烯是含有作为发泡剂的戊烷的透明PS粒料。
本设计为年产5万吨可发性聚苯乙烯聚合工段工艺设计，反应机理是自由基聚合，采用悬浮聚合工艺，以苯乙烯为单体，水做悬浮介质，采用低温悬浮聚合一步法生产工艺。此方法是将苯乙烯单体、引发剂、分散剂、水、发泡剂和其他助剂一起加入反应釜内,聚合后得含发泡剂的树脂颗粒,经洗涤、离心分离和干燥,制得可发性聚苯乙烯珠粒产品；针对聚合反应釜进行了物料衡算、热量衡算，在此基础上通过分析工艺流程，选择出了工艺设备并计算，绘制了带控制点的流程图、并编制了设计说明书和计算书。
关键词：可发性聚苯乙烯 悬浮聚合 物料衡算 工艺设计
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聚合物合成工艺设计结课作业
Abstract
EPS (expandable PolyStyrene EPS) known as polystyrene and styrene copolymers, is a mixture of a resin and physical foaming agent and other additives. The most common can be made of polystyrene is contained as pentane foaming agent transparent PS material particle.
Suspension polymerization is the design for the annual production capacity of 5 million tons of polystyrene section process design, reaction mechanism of free radical polymerization, suspension polymerization, using styrene monomer, water as suspending medium, using low-temperature one-step production process. This method is styrene monomer, initiator, dispersion agent, water, foaming agent and other additives together into a reaction kettle, after polymerization containing blowing agent of resin particles, after washing, centrifugal separation and drying, can be made of polystyrene beads products; for polymerization reaction kettle of material balance, heat balance calculation, based on the analysis of the process flow, selection of the process equipment and calculation. Draw a flow chart with control points, and the preparation of the design specifications and calculations.
Key words: Expandable Polystyrene suspension polymer material balance calculation process design
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聚合物合成工艺设计结课作业
目 录
摘 要 .............................................................................................................................................. 1 1 绪论............................................................................................................................................. 4
1.1概述 ..................................................................................................................................... 4
1.1.1聚苯乙烯简介 .......................................................................................................... 4 1.2指导思想 ............................................................................................................................. 4 1.3节能与环境保护 ................................................................................................................. 4
1.3.1节能 .......................................................................................................................... 4 1.3.2环境保护 .................................................................................................................. 5
2 工艺论证 ..................................................................................................................................... 6
2.1工艺原理 ............................................................................................................................. 6
2.1.1生产方案 .................................................................................................................. 6 2.1.2 工艺路线 ................................................................................................................. 6 2.1.3工艺流程 .................................................................................................................. 6 2.1.4反应原理 .................................................................................................................. 6 2.2聚苯乙烯的生产技术 ......................................................................................................... 7 3 聚合工段工艺和生产流程 ..................................................................................................... 8
3.1聚合工段工艺过程叙述 ..................................................................................................... 8 3.2生产流程 ............................................................................................................................. 8 3.3产品规格、原料及公用工程条件 ..................................................................................... 8
3.3.1产品规格 .................................................................................................................. 8 3.3.2生产方式及规模 ...................................................................................................... 9
4 物料衡算 ............................................................................................................................... 10
4.1计算依据 ........................................................................................................................... 10 4.2聚合工段物料衡算 ........................................................................................................... 10
4.2.1进料阶段 ................................................................................................................ 10 4.2.2出料阶段 ................................................................................................................ 11
5 聚合工段热量衡算 ............................................................................................................... 13 附 录......................................................................................................................................... 16
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