1、1 化工原理化工原理课程设计课程设计说明书说明书 课题名称：年处理 7 万吨乙醇的换热器设计 目目 录录 摘 要 .1 Abstract2 第一章 设计内容 3 1.1 概述 3 1.2 固定管板式换热器的优缺点 .4 1.3 固定管板式换热器的构成及结构特点 4 1.4 固定管板式换热器的结构原理.4 第二章 设计计算 5 2.1 确定设计方案 5 2.2 确定物性数据 5 2.3 初选总传热系数7 2.4 计算传热面积 8 2.5 工艺结构尺寸 8 第三章 换热器核算 . 14 3.1 面积核算 . 14 3.2 压降核算 . 16 附表及符号说明 . 20 设计小结与致谢 . 21 参考
2、文献 22 1 摘要摘要 换热器是将热流体的部分热量传递给冷流体的设备， 又称热交换 器。换热器是实现化工生产过程中热量交换和传递不可缺少的设备。 在石油、化工、轻工、制药、能源等工业生产中，常常用作把低温流 体加热或者把高温流体冷却， 把液体汽化成蒸汽或者把蒸汽冷凝成液 体。根据统计，热交换器的吨位约占整个工艺设备的 20%有的甚至高 达 30%，其重要性可想而知。 我们这次课程设计的任务是设计一套固定管板式换热器。 乙醇为 热流体,水为冷流体。乙醇进口温度为C7070,出口温度为在这次设计过 程包括设计方案的确定，设计计算（总传热系数选择 传热面积及其 工艺尺寸的计算） ，然后进行面积与压
3、降核算经过反复核算最终确定 出了换热器的各个参数。面积裕度为 24.7%符合面积裕度范围 （15%-25%）,管程压降为 2028.6pa105pa,壳程压降为 5722pa105pa 符合设计要求。紧接着我们开始编写说明书，用 CAD 画换热器装配 图。最终完成满足要求的设计方案。 关键词关键词：固定管板式换热器 设计 2 Abstract The heat exchanger is part of thermal fluid heat transfer to the cold fluid equipment, also called heat exchanger. Heat exchang
4、er is the realization of chemical processes of heat exchange and transmission of essential equipment the petroleum, chemical industry, light industry, pharmaceuticals, energy and other industrial production, often used for the cryogenic fluid heating or cooling the high temperature fluid, the liquid
5、 vaporized into steam or the steam is condensed into liquid. According to statistics, heat exchanger tonnage about the entire process equipment 20%, some even as high as 30%, one can imagine the importance. We this course design task is to design a set of fixed tube plate heat exchanger Ethanol as t
6、he hot fluid, water as cooling fluid. Ethanol inlet temperature, outlet temperature in determining this design process including design, design calculation (calculation of heat transfer area and the process of selection of size of the total heat transfer coefficient and pressure drop), and then the area of accounting after repeated accounting Area of margin of 24.7% compliance area margin range (15%-25%), pipe pressure drop is 2028.6pa105pa, pressure shell of 5722pa105pa meets the design requi
