乙烯制备乙二醇全流程设计说明书.docVIP

PAGE 2 摘 要 通过对现有乙烯制备乙二醇（G）ME生产工艺的比选，采用环氧乙烷催化水和制乙二醇。乙二醇的生产分为三个系统：乙烯精致工段，乙烯制环氧乙烷工段，环氧乙烷制乙二醇工段。本项目为年产100万吨乙二醇的工艺设计，以团队的形式对乙二醇生产工艺的三个工段分别进行设计。本文主要是利用Aspen Plus软件模拟环氧乙烷生产乙二醇工艺流程。根据模拟结果对工艺过程的物料和热量进行衡算，保证工艺设计的可行性。然后对设备进行选型，并且利用CAD软件计算绘制环氧乙烷制乙二醇工段工段的物料流程图、工艺管道及仪表流程图等。 关键词：；氧乙烷催化水和制乙二醇；Aspen模拟；工艺设计 Abstract Through the comparison and selection of the existing ethylene production process of ethylene glycol (G)ME, ethylene oxide is used to catalyze water and produce ethylene glycol. The production of ethylene glycol is divided into three systems: ethylene refinement section, ethylene production ethylene oxide section, and ethylene oxide production ethylene glycol section. This project is a process design with an annual output of 1 million tons of ethylene glycol. The three sections of the ethylene glycol production process are designed separately in the form of a team. This article mainly uses Aspen Plus software to simulate the process flow of ethylene oxide production of ethylene glycol. According to the simulation results, the material and heat of the process are calculated to ensure the feasibility of the process design. Then select the equipment, and use CAD software to calculate and draw the material flow chart, process piping and instrument flow chart of the ethylene oxide to ethylene glycol section. Keywords：Oxyethane catalyzes water and makes ethylene glycol; Aspen simulation; Process design  目 录 TOC \o "1-3" \h \z \u 引 言 1 第一章 烯烃分离技术概述 2 1.1产品气预分离 2 1.2产品分离与精制 2 第二章 烯烃分离原料及产品 4 2.1原料简介 4 2.2产品简介 5 2.3 产品性质及用途 6 2.3.1 乙烯 6 2.3.2 丙烯 7 第三章 工艺方案选择 8 3.1 深冷分离技术 8 3.1.1顺序分离 8 3.1.2 前脱乙烷流程 8 3.1.3 前脱丙烷流程 9 3.1.4 三种流程对比 9 3.2 油吸收分离技术 10 3.3预切割油吸收技术 10 3.4 烯烃分离技术对比及选择 11 3.5 自动控制 11 3.5.1 产品气压缩机防喘振控制 11 3.5.2 换热器流量温度串级控制 12 3.5.3 塔设备流量温度和流量液位串级控制 13 第四章 工艺计算 14 4.1 物料衡算 14 4.1.1 Aspen预分离工序物料衡算 14 4.1.2 Aspen水洗塔物料衡算 15 4.1.3 Aspen碱洗塔物料衡算 16 4.1.4 Aspen高压脱丙烷塔物料衡算 17 4.1.5 Aspen低压脱丙烷塔