7万吨/年碳酸二甲酯车间的工艺设计

【作者】 刘斌；

【导师】 陈立宇；

【作者基本信息】 西北大学 ， 化学工程（专业学位）， 2012， 硕士

【摘要】 本论文进行的是7万吨／年碳酸二甲酯车间的工艺设计,碳酸二甲酯被认为是新近崛起的极具发展前景的绿色化工产品,在溶剂、汽油柴油添加剂、锂离子电解液以及化学合成等领域的应用。本设计采用尿素直接醇解工艺制备碳酸二甲酯,反应过程分为两步,尿素与甲醇反应生成氨基甲酸酯,氨基甲酸酯与甲醇反应生成碳酸二甲酯,分别采用第一反应器和催化精馏反应塔设备实现反应过程。产物分离分别经过膜分离、氨分离塔、萃取精馏塔、碳酸二甲酯塔得到合格的产品,产物分离中的氨基甲酸酯塔和邻二甲苯塔分别为中间产物回收和萃取剂回收操作。本设计工作的主要内容有：工艺路线比较,工艺流程确定,工艺流程chemCAD软件模拟,工艺设备计算及选型,车间设备布置。设计成果主要包括：设计说明书,流程模拟原文件,物料流程图,带控制点的工艺流程图,工艺设备一览表,车间设备布置图。更多还原

【Abstract】 This Project is technology design for capacity of70000ton dimethyl carbonate product annually. Dimethyl carbonate is a kind of green chemical products recent rise very promising. Application in areas such as solvent, gasoline additive, diesel fule additive and chemical synthesis.The designed technological route is direct alcoholysis of urea. The reaction process is divided into two steps:the carbamate is synthesized by urea and methanol firstly and then carbamate reactes with methanol to dimethyl carbonate. Which process was achieved by first reactor and catalytic-distillation tower. The product of dimethyl carbonate gets from series of separation unit operation such as:membrane of CO2, distillation tower of ammonia, distillation tower of extractive, distillation tower of dimethyl carbonate. Meanwhile, the distillation tower of carbamate aim to recollect carbamate and distillation tower of p-xylene to extractor.All designed in this project, including technological process argumentation and simulation with chemCAD. Based on the equipments were confirmed and located. The result including description of design, list of equipments, equipment plot plan, piping&instrument diagram.更多还原