固定管板式换热器.doc

乙醇-水精馏塔顶产品冷凝器 摘要 换热器是化工生产中重要的设备之一，它是一种冷热流体间传递热量的设备，其中管壳式换热器应用最为广泛。本换热器为单壳程、管程的卧式固定管板式换热器，管程介质为，壳程介质为%的乙醇。 固定管板式换热器是由两端管板和壳体连接而成，因此它具有结构简单和造价低廉的优点。 本次设计主要分为两个部分，一部分是工艺，另一部分为。其中固定管板的设计较为复杂，也是至关重要的环节。本设计中，。 换热器作为换热设备随处可见，在工业中应用非常普遍，特别是耗能用量十分大的领域，随着节能技术的飞速发展，换热器的种类开发越来越多。关键词：换热器；冷凝器；；管板；abstract The heat exchanger is one of the chemical production equipment, it is a hot and cold fluid heat transfer equipment, including shell-and-tube heat exchanger is the most widely used. The condenser is a heat exchanger, the heat exchanger design for single shell, double tube side horizontal fixed tube plate heat exchanger tube medium is water, the shell media 95% ethanol . Fixed tube plate heat exchangers are connected by both ends of the tube plate and the housing and the tube box, so it has the advantages of simple structure and low cost. The design is divided into two parts, process design, and the other part of the mechanical design. Fixed tube sheet design is more complex, is also a vital link. The mechanical design is included in the structural design and design strength. In this design, the two ends of the heat exchanger tube box type B, head for the standard elliptical head. The design material selection pressure vessel industry in China use of the largest steel 16MnR. The heat exchanger as a heat transfer equipment everywhere, very common in industrial applications, especially energy consumption amount of very large areas, with the rapid development of energy-saving technology, more and more heat exchanger types of development.Keywords: heat exchanger; condenser; housing; tube plate; tube box; head 摘要 2 abstract 3 一、绪论 6 1.1、设计目的 6 1.2、该设备的作用及在生产中的应用 6 1.3、说明运用该设备的理由 6 1.4、设备的结构特点 6 1.5、在设计中遇到的问题的处理 6 1.6、设计方案的确定 7 二、换热器概述 7 2.1、换热器的分类 8 三、换热器的工艺设计 12 3.1、设计条件 12 3.2、换热器初选 12 3.2.1确定物性 12 3.2.2流程安排 13 3.2.3初选换热器的类型 13 3.2.4物料衡算 13 3.2.5计算平均传热温差 13 3.2.6设总传热系数k 14 3.3工艺结构尺寸 15 3.3.1管径和管内流速 15 3.3.2管程数和传热管数 15 3.3.3传热管排列和分程方法 15 3.3.4壳体内径 16