摘 要
环氧乙烷是乙烯的重要衍生物，主要用作有机合成的中间体和原料，用于制造乙二醇、表面活性剂、洗涤剂、增塑剂以及树脂等。我国环氧乙烷生产能力有限，每年都要大量进口环氧乙烷产品来满足国内市场的需求。
环氧乙烷是乙烯衍生物中的重要基础化工原料，它主要用来生产乙二醇，因此环氧乙烷（EO）/乙二醇（EG）工艺是石油化工中的重要工艺之一。我国目前拥有大小不等的EO/EG生产装置11套，但相比于国外的同类 装置，这些装置的工艺落后，能耗和水耗较高，因此研究EO/EG工艺优化以降低生产成本，具有非常现实的意义。
本设计对年产5.0万吨环氧乙烷合成工段进行了工艺设计。并对环氧乙烷的生产方法、生产原理、流程路线及主要设备等进行了论述和计算。设计的工艺流程分为四个系统，分别为：反应系统、环氧乙烷吸收和解吸系统、二氧化碳吸收解吸系统和环氧乙烷精致系统。并以这四个系统为主线，对工艺流程进行了叙述。
本设计的专题任务为环氧乙烷脱轻组分塔和环氧乙烷精致塔塔底再沸器，针对专题任务做了热量衡算和设备计算，对设备参数进行了校核，并根据计算的结果对换热器，即环氧乙烷精致塔底再沸器进行了设备选型。
关键词：环氧乙烷
Abstract
Ethylene oxide ethylene derivatives, mainly used for organic synthesis intermediates and raw materials for the manufacture of ethylene glycol, surfactants, detergents, plasticizers, and resins. China's ethylene oxide production capacity every year to import large quantities of ethylene oxide products to meet domestic market demand.。
. Ethylene oxide is an important basic chemical raw materials in the ethylene derivatives, it is mainly used to produce ethylene glycol, ethylene oxide (EO)/ethylene glycol (EG) process is one of the important process in the petrochemical industry. China now has 11 sets of varying sizes EO/EG production unit, but compared to similar devices in the foreign and backward technology of these devices, energy and water consumption higher, so the researchers EO/EG process optimization to reduce production costs. a very real sense.。
The designed annual production capacity of 50,000 tons of ethylene oxide synthesis section in the process design. And ethylene oxide production, production principle, the process routes and major equipment, etc. are discussed and calculated. The design process is divided into four systems, namely: the reaction system, the absorption and desorption of ethylene oxide system, carbon dioxide absorption desorption system and sophisticated system of ethylene oxide. Line and the four system-based process described。
This design feature is off the light components of the tower of ethylene oxide and
ethylene oxide fine Tata bottom reboiler heat balance and equipment for thematic mandates calculation of device parameters, proofreading, and calculatedthe results of the heat exchanger, ethylene oxide fine bottom reboiler equipment selection.
Keywords: Ethylene oxide.
目录
前言 ................................................................. 1 1 文献综述 .......................................... 错误！未定义书签。 1.1 环氧乙烷的性质 .................................. 错误！未定义书签。 1.1.1 环氧乙烷的物理性质 .......................... 错误！未定义书签。 1.1.2 环氧乙烷的化学性质 .......................... 错误！未定义书签。 1.2 环氧乙烷的生产方法 1.3 环氧乙烷国内外生产技术现状 1.4 环氧乙烷国内发展现状 1.5 环氧乙烷国外发展现状 2 设计部分 2.1 设计方案的确定
2.1.1 环氧乙烷生产方法的确定 2.1.2 催化剂的选择
2.1.3 环氧乙烷生产工艺条件的确定 2.1.4 环氧乙烷生产的工艺流程 2.2 工艺计算 2.2.1设计条件 2.2.2 物料衡算 2.2.3 热量衡算 2.3 反应器的设计
2.3.1 催化剂的用量
2.3.2 确定氧化反应器的基本尺寸 2.3.3 床层压力降的计算 2.3.4 传热面积的核算 2.3.5 反应器塔径的确定 3 数据汇总 4 结论 参考文献 致谢