北京理工大学珠海学院 2020 届本科生毕业设计年产 12 万吨丙烯腈回收工段工艺设计年产 12 万吨丙烯腈回收工段工艺设计丙烯腈是有刺激性气味、无色的液体。极易燃烧，其水蒸汽与空气接触发生反应，生成易燃易爆混合物；遇到高温或明火生成毒性气体。同时是合成橡胶、合成纤维、塑料的必要原料。本文研究年产 12 万吨丙烯腈回收工段的工艺设计流程，针对以分离丙烯腈和乙腈为目的的工艺流程，搜集相关文献及生产资料，最终确定以水为溶剂的萃取精馏塔为生产设备，并对其回收原理、流程作出论证。然后进行物料衡算、热量衡算、设备计算，并根据计算结果进行设备选型。最后进行 “三废处理”，并绘制带控制点的工艺流程图和车间 CAD 图。关键词：丙烯腈；乙腈；萃取精馏；回收工艺北京理工大学珠海学院 2020 届本科生毕业设计Annual output of 120000 tons of acrylonitrile recycling section process designAbstractAcrylonitrile, colorless, is a kind of liquid with pungent smell, which is easy to burn. When its water vapor contacts with air, it will form flammable and explosive mixture, and when encountering high temperature or open fire, it will release toxic gas. At the same time, it is also the basis and necessary raw material of three major synthetic materials - synthetic rubber, synthetic fiber and plastic. This paper mainly studies the preliminary process design of the 120000 ton / a acrylonitrile recovery section. First of all, this paper discusses the current situation and significance of the research, domestic and foreign development status, production purpose and production methods. According to the data obtained, the main production unit is to determine the extraction distillation tower with water as the solvent, and the production purpose is to separate acrylonitrile and acetonitrile. The key point of this paper is to elaborate the recovery section of acrylonitrile, and to demonstrate the principle and process of the recovery process of...
