摘要:在工业生产中,为了实现物料之间热量传递过程的一种设备,统称为换热器。它是化工、炼油、动力、原子能和其他许多工业部门广泛应用的一种通用工艺设备。对于迅速发展的化工、炼油等工业生产来说,换热器尤为重要。通常在化工厂的建设中,换热器约占总投资的10-20%。在石油炼厂中,换热器约占全部工艺设备投资的35-40%。在换热设备中,应用最广泛的是管壳式换热器。目前这种换热器被当做一种传统的标准换热器,在许多工业部门中被大量的使用。尤其在化工生产中,无论是国内还是国外,它在所有换热设备中,仍占主导地位。本设计通过对换热器的了解,设计出一款能够回收废气的换热器。5636
关键词:管壳式换热器;固定管板式换热器;传热计算;结构设计
The Design of Waste Heat Recovery Unit
Abstract: In industrial production, the device which can make the material transfer their heat called heat exchanger. It is a general process equipment in chemical, oil refining, power, atomic energy, and many other industrial. For the rapid development of the chemical, oil refining and other industrial, the heat exchanger is particularly important. Usually in the construction of the chemical plants, heat exchanger accounted for about 10-20% of the total investment. In oil refinery, heat exchanger accounted for about 35-40% of all process equipment investment. In the heat exchanger equipment, the most widely used is the tube-shell heat exchanger. At present, this kind of heat exchanger is used as a traditional standard heat exchanger, is widely used in many industrial departments. Especially in chemical production, whether domestic or abroad, in all of the heat exchanger equipment, it is still dominant. This design through the understanding of the heat exchanger, designed a recycling of the exhaust gas heat transfer.
Key words: shell and tube heat exchanger; fixed tube-sheet exchanger; heat-transfer design; the structure design
目录
1 绪论 4
1.1 课题介绍 4
1.2 课题研究的意义 4
1.3 换热器的分类 4
1.3.1 混合式换热器 4
1.3.2 蓄热式换热器 5
1.3.3 间壁式换热器 6
1.3.4 中间载热体式换热器 7
1.4 国内外对换热器的研究进展及主要成果 8
1.4.1 国内外换热器研究进展综述 8
1.4.2 国内技术差距 9
1.4.3 国外换热器发展主要方向 9
1.5课题研究的内容 10
2 传热设计 11
2.1 原始数据 11
2.2流体的平均温度TM和tm 12
2.3平均温度下的物性数据 12
2.4平均传热温差Δtm 13
2.5 管径和管内流速确定 13
2.6计算传热系数K 13
2.6.1 管程传热系数 13
2.6.2 壳程给热系数 13
2.7 热流量计算 14
2.8 排管和管壳设计 14
2.9 校核传热系数 17
3 阻力计算 19
3.1 管程流动阻力 19
3.2 壳程流动阻力 19
4 细部结构的设计 20
4.1壳体和管箱的材料选择 20
4.2 管箱 21
4.3固定管板 23
4.4 接管 24
4.5 折流板 25
4.6管束分程 26 废热回收器的设计+CAD图纸:http://www.751com.cn/jixie/lunwen_2741.html