年产5万吨碳酸二甲酯工艺流程的dmc加压精馏塔设计-大学论文.doc

大连大学 2013届毕业论文(设计) 题目名称： 年产5万吨碳酸二甲酯工艺流程的塔设计 环境与化学工程学院 专业(班级)： 过程装备与控制工程102班 学生姓名： 指导教师： (副教授) 评阅人： (副教授) 院 长 ： (教授)  年产5万吨碳酸二甲酯工艺流程的 设计 总 计： 毕业论文： 表 格： 6 表 插 图： 8 幅 指导教师：（副教授） 评 阅 人（副教授） 完成日期：2014年05月摘要 碳酸二甲酯（DMC）是一种无毒、环保性能优异且用途广泛的化工原料。本设计尿素醇解法，该工艺的DMC回收率可达98%，产品纯度高于99.9%。Aspen plus模拟。选用的塔器为浮阀塔，采用单溢流弓形降液管，凹形受液盘，D=2.8m， =0.7m，筛孔采用等腰三角形顺式排列，筛板塔的操作上限为液泛控制，下限为漏液控制，操作弹性为2.52。 机械设计全塔质量载荷的计算，然后分别对每一段进行地震载荷、风载荷等。由地震弯矩和风弯矩引起的应力校核均全部符合标准 关键词：碳酸二甲酯、塔、aspen plus、AUTO CAD Abstract Dimethyl carbonate (DMC) is a non-toxic, excellent environmental performance and the extensive use of chemical raw materials. This design uses an alcohol solution of urea, Recovery process up to 98%, the product purity higher than 99.9%.Aspen Plus software use sophisticated separation module for the process of distillation simulate various operating units, and then based on the results of the simulation results and processes Aspen mechanical design calculations tower equipment. Optional floating valve tower , using a single down comer overflow arcade concave liquid receiving plate, D = 2.7m, HT= 0.7m, isosceles triangle mesh using the arrangement of the operation cap plate column to control flooding, the lower limit for the leakage control, operating flexibility to 2.52. In mechanical design, the tower is divided into six sections, the first tower of the whole mass loading is calculated, and then separately for each section of the seismic loads, wind loads and other calculations. By SW6 stress check software that moment caused by the earthquake and wind moments are all in compliance with the standard, hydraulic pressure test standard. Stress tower attachment checking compliance. All qualified mechanical design. Keywords: dimethyl carbonate , rectifying