1北京理工大学珠海学院 2020 届本科毕业设计年处理 50 万吨粗甲醇制低碳烯烃预处理工段设计摘要我们今次的设计任务是粗甲醇制低碳烯烃这么多工段中的预处理工段,其处理量为每年 50 万吨,今次的设计操作设计有四个基本步骤,分别有吸收、解析、压缩和干燥,上面四个操作就是这次设计的操作总和。查阅资料后得知反应工段所产生的各反应产物的摩尔分数组成有这以下几种:H2 4.40%,CO2 2.60%,H2O 1.30%, CH4 2.60%,C2H6 0.39%,C2H4 63.65%,C3H6 21.96%,C3H8 0.27%,C4H8 2.60%,C5H12 0.23%,当我们想有聚合级的乙烯和丙烯,就要除去产物中的 CO2和 H2O。除去 CO2和H2O 是这次工段设计的主要目标,经过一段时间观看相关的一些文献资料,我们用来很多时间来做这次工艺的设计,并且我在这次设计过程中用 CAD 技术画四幅图,分别是 PFD 物料流程图、PID 工艺流程图、主设备图和车间布置图。然后用现代化工的模拟软件 Aspen Plus 进行了仔细的主设备图计算,并选择了这次设计任务及工作的环境温度,压力等相关有效标准数据对工艺管道大小和尺寸还有材质进行了设计。关键词:低碳烯烃,二氧化碳,水,物料衡算,能量衡算2北京理工大学珠海学院 2020 届本科毕业设计AbstractThe design task is in treatment of 60 million tons of methanol to olefins pre processing section of the process design of the section design including absorption, resolution, compression, drying the basic steps and the basic steps are combined to form and processing section of the process.Produced in the reaction section is the reaction product of the mole fraction is composed of the following: 4.40% H2, CO2 2.60%, 1.30% H2O, CH4 2.60%, 0.39% C2H6, C2H4 63.65%, C3H6 21.96%, C3H8 0.27%, C4H8 2.60%, C5H12 0.23% because polymerization grade ethylene and design condition of grade propylene polymerization is very demanding to get,So in the process to remove the mixture of CO2 and H2O. The removal of CO2 and H2O is the main goal of the design of the section, after a period of time to watch some related data, design the annua...