乙醇装置蒸汽冷凝器设计.doc

姓名:周芬
学号:2010133162
班级:20101331班
学院:化学化工学院
年级:2010级
专业:化学工程与工艺
指导教师:王智娟
完成日期:2012年8月30日

摘要

本设计论文介绍了固定管板式换热器的整体结构设计及计算。浮头式换热器的一端管板固定在壳体与管箱间,另一端管板可以在壳体内自由移动,这种换热器壳体和管束的热膨胀是自由的,管束可以抽出,便于清洗管间和管内。其缺点是结构复杂,造价高(比固定管板高20%),在运行中浮头处发生泄漏,不易检查处理。浮头式换热器适用于壳体和管束温差较大或壳程介质易结垢的条件。
本设计任务温度和压强要求都不高,由换热器的系列标准选取公称直径为600mm、。经传热面积、。
关键词:固定浮头式换热器;传热面积;核算证明
35,000 tons / year of ethanol steam condenser design
Abstract: The design paper describes the design and calculation of the overall structure of the fixed tube sheet heat exchanger. One end of the floating head heat exchanger tube plate fixed to the housing and between the header tank, the other end of the tube plate can move freely within the housing, the thermal expansion of the housing and control of this heat exchanger is free, tube bundle can be withdrawn, to facilitate cleaning between the pipes and tube. The drawback is plex structure, high cost (20% higher than the fixed tube plate), leakage occurs at the floating head in the running is not easy to check processing. Floating head heat exchanger suitable conditions in the housing and control a larger temperature difference or the shell media easy scaling
The temperature and pressure requirements of the design task is not selected by a series of heat exchangers standard nominal diameter of 600mm nominal heat transfer area for a of fixed floating head heat exchanger. The heat transfer area, the pressure drop accounting that this annual heat exchanger can pleted to 35,000 tons / year of ethanol steam condensate cooling task.

Keywords: fixed floating head heat exchanger; heat transfer area; accounting to prove
目录
0 引言 1
换热器的应用 1
换热器的分类 1
常见及常用的换热器 2
进行换热器设计的重要意义 2
1 设计任务 2
2 设计方案的确定 2
换热器类型的选择 3
管程、壳程物料的安排 4
3 物性数据的确定 4
定性温度的确定 4
乙醇的定性温度 4
湖水的定性温度 4
冷、热流体有关物性数据 5
乙醇的物性参数 5
水的物性参数 5
4 传热面积的估算