文档介绍：20万吨每年聚***乙烯聚合及干燥包装工艺设计
摘要
本设计为年产20万吨聚***乙烯聚合和干燥包装工段的工艺设计。首先介绍了聚***乙烯的性质、主要用途、技术进展以及由***乙烯单体聚合成聚***乙烯的四种常见的工业聚合方法,并确定了以悬浮聚合法作为本设计的聚合工艺生产方法。对聚合及干燥包装工段进行了详细的物料衡算(包括聚合釜的物料衡算、汽提塔的物料衡算、离心干燥工段的物料衡算)和主要设备的热量衡算(包括聚合釜的热量衡算、换热器的热量衡算等),也对设备作了选型计算,得出本设计需采用9个70(I型)不锈钢聚合釜并联操作,9台70出料槽,29台WL-630型离心机,最后对聚***乙烯聚合过程中的安全注意事项及三废处理问题作了简单的说明。同时绘制了带控制点的PVC聚合及干燥包装工段的工艺流程图、聚合工段主要设备平面布置图、聚合工段主要设备立面布置图以及聚合釜装配图。
关键词:聚***乙烯;悬浮聚合法;干燥包装;生产工艺
Abstract
The design for an annual output of 50,000 tons of PVC dry polymerization processes of the preliminary design, the design documents from design specification and design posed of two parts. In the design of brochures, a brief introduction of the PVC production status, trends, performance and the main purpose of the current PVC also introduced the mon industrial polymer production methods. And parison, final Determined to suspension polymerization as a polymerization technology production methods. In the design process, in accordance with the requirements of the mission design, a more detailed material balance and energy balance, the equipment was calculated and the selection process, while the production of PVC in the process of attention to safety issues and "Three wastes" governance made note of the entire device to a simple technical. Drawing the corresponding design drawings, design drawings, including process maps, plans of major equipment assembly, equipment layout plans.
Key words: polyvinyl chloride ; suspension polymerization; Dryness ; monomer; Productive technology
目录
摘要 I
Abstract II
第1章概述 1
聚***乙烯简介 1
聚***乙烯的理化性质 1
聚***乙烯树脂的种类 2
聚***乙烯树脂的用途 3
聚***乙烯树脂的包装与贮运方法 4
PVC树脂工业技术进展 4
世界PVC树脂工业技术进展 4
PVC生产工艺技术的进展 6
PVC树脂的典型聚合工艺 7
悬浮聚合 7
本体聚合 8
乳液聚合 8
微悬浮聚合 9
第2章聚***乙烯聚合及干燥包装工艺 10
工艺方案选择依据 10
悬浮聚合法简介 11
悬浮聚合原理 11
聚合生产过程中常用的助剂 11
. 3 影响聚合反应的因素 13
悬浮聚合工艺流程介绍 15
16
料浆汽提工艺流程 17
离心干燥工艺流程 17
悬浮聚合的具体操作 18
第3章物料衡算 20
物