文档介绍：《化工原理》
《化工设备机械基础》
课程设计
题目苯—甲苯精馏分离换热器设计
专业化学工程与工艺
姓名周仁威
学号 040940337
指导教师石新雨、谭志斗
设计时间 2011 年 12 月 1 日—12 月 16 日
化工原理及化工设备机械基础课程设计
摘要
精馏的本质是利用物质挥发度的不同,通过多次汽化、多次冷凝的精馏过程
而达到物质分离的单元操作过程,而多次汽化所需的能量即通过再沸器提供的,
这就是再沸器的作用;多次冷凝回流是通过冷凝器完成的。
苯—甲苯釜液再沸器、冷凝器都属于换热器,通常采用热虹吸式换热器,也
是一种列管式换热器,在生产企业中占有较重要的地位,它直接影响产品的质量
和产量。
本设计主要是对其工艺、结构等的设计,通过选用换热设备的型号和对国标
的查找,设计出经济实用的化工设备,达到精馏分离的目的,完成分离任务。
主要介绍了再沸器、冷凝器的设计工作以及它在生产过程中处于的地位和作
用,它们是精馏塔不可或缺的一部分,它们提供给精馏塔多次汽化所需的能量以
及多次冷凝回流的场所,在精馏分离中起到不可或缺的作用。
关键词:
再沸器汽化冷凝器冷凝列管式换热器苯—甲苯
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化工原理及化工设备机械基础课程设计
ABSTRACT
Distillation is the physical separation unit operation which is achieved by the
repeated distillation process of several vaporization and condensation, since the
volatility of different materials vary from each other. And the energy required for
vaporization is provided by the reboiler This is the role of the reboiler.
Benzene—methylbenzene reboiler is a heat exchanger, it is also a tube-type heat
exchanger. In the manufacturer industry it plays a very important role, for it has direct
impact on the product quality and yield .
This design is mainly for its technology, structure design. By selecting the model
and the national standards of the heat transfer exchanger, we e up with the
economic and practical design of chemical equipment. So we can clearly express the
structure size and it is convenient for us for further improvement and production.
Now we pleted the design of the reboiler and its role in the production
process. It is an integral part of the distillation column, which provides the energy
needed to vaporize several distillation columns.
Key words:
Reboiler ;Vaporization ;Condenser ;Condense;Condenserdistillation column
heat exchanger ;Benzene—methylbenzene
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化工原理及化工设备机械基础课程设计
第一章:冷凝器............................................................................................................................... 5
、设计任务书....................................................