年产30万吨乙酸乙酯的工艺设计

精品文档---下载后可任意编辑年产 30 万吨乙酸乙酯的工艺设计摘 要乙酸乙酯是重要的精细化工原料。它是一种具有优异溶解性能和快干性能的溶剂，已广泛应用于生产中。目前，乙酸乙酯的工业生产方法已趋于成熟，而乙醛缩合法因其具有原料来源广泛、绿色、环保等优点在众多生产方法中脱颖而出最具进展前景。本设计采纳乙醛缩合法，对工艺中的主要设备进行物料与能量衡算，并对乙酸乙酯的精馏塔、反应器进行了设计选型。根据设计要求对设备进行选型。就脱乙醇塔而言，塔体压力为常压，回流比取 3，操作条件：XD=99%、XW=。计算出塔板数为 46 块，塔高。对塔体的主要尺寸设计：精馏段：算得堰长为，出口堰高为，堰宽为，降液管底隙高度为；提馏段：算得堰长为，出口堰高为，堰宽为，降液管底隙高度为。对于反应器选择连续型搅拌反应釜：算得筒体高度，筒体和封头直径 3m，内筒筒体厚度为 10mm。设计中，首先根据工艺操作的要求和特点，参照相关工艺的资料，绘制工艺流程图，然后根据工艺计算结构设计的最终数据画出主要设备图。设计满足安全生产要求，而且经济合理。关键词：乙酸乙酯，乙醛缩合法，物料衡算，精馏塔，工艺流程图精品文档---下载后可任意编辑PRODUCTION DESIGN WITH AN ANNUAL OUTPUT OF 300 THOUSANDS TONS OF ETHYL ACETATEABSTRACTEthyl acetate is an important fine chemical raw material. It is a kind of excellent solubility and fast-drying solvent, has been widely used in production. At present, the industrial production of ethyl acetate have been more and more mature, and the condensation of acetaldehyde because of its wide raw material sources, green, environmental protection and other advantages stand out from many production methods in the most development prospect.The condensation of acetaldehyde had been used in the design, material and energy balance calculation of the main process equipment, and distillation tower, reactor for ethyl acetate were design selection. According to the design requirements, we selected the suitable equipment. As far as alcohol tower, the tower body was at atmospheric pressure,...