毕业设计---20万吨每年聚氯乙烯聚合及干燥包装工艺设计

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1、 I 摘摘 要要 本设计为年产 20 万吨聚氯乙烯聚合和干燥包装工段的工艺设计。首先介绍了聚氯乙 烯的性质、主要用途、技术进展以及由氯乙烯单体聚合成聚氯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 3 m（I 型）不锈钢聚合釜并联操作，9 台 70 3 m 出料槽，29 台 WL-630 型离心机，最后对聚氯乙烯聚合过程中的安全

2、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：关键词：聚氯乙烯；悬浮聚合法；干燥包装；生产工艺 II 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

3、drawings composed 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 four common industrial polymer production methods. And a comparison, final Determined to suspension polymeriz

4、ation 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 m