每小时40吨环形加热炉的设计+CAD图纸
毕业论文关键词： 环形加热炉；燃料燃烧；热平衡；换热器
Design of 40t/h Annular Furnace
Abstract: Annular furnace is one of the industrial furnaces，it’s a relatively mature type furnace, and it is mainly used for heating round billet, rough short billet, special shaped job and wheel hub, etc.The stack is fixed, the bottom turn round, the billet material is placed on the bottom moved from feed inlet to the discharging port to complete the whole heating process.In this design, the diameter size of the annular furnace is 14 meters, and the main fuel is producer gas, the heating system is pided three parts, respectively as preheating section, heating section and the heating section.This paper mainly focuses on the fuel combustion, size of hearth and smoke exhaust system design, including fuel combustion and billet heating time calculation, determine the basic size of the stove, heat balance calculation and determination of fuel consumption, heat exchanger calculation, resistance of flue and chimney calculation.Throughout the design process, in addition to reference all kinds of industrial furnace design manual, also uses the Basic Visual software editor to select the furnace body material and drawing by Auto CAD.
Keywords: Annular furnace; Combustion;Thermal equilibrium; Heat exchanger
目录
摘要 I
Abstract I
目录 II
1 绪论 1
1.1 课题的目的和意义 1
1.2 对炉子的基本要求 1
1.3 环形炉概述 2
1.4 环形炉的特点 2
1.5 国内外研究现状与水平 3
1.6 环形炉发展趋势 3
2 设计基本条件及内容 4
2.1 设计基本条件 4
2.1.1 加热钢管的产量及尺寸 4
2.1.2 钢坯加热要求 4
2.1.3 空气预热温度 4
2.1.4 燃料条件 4
2.2 设计的主要内容 4
3 燃料燃烧计算 6
3.1 空气需要量 6
3.1.1 理论空气需要量 6
3.1.2 实际空气需要量 6
3.2 燃烧产物量 6
3.3 燃烧产物成分 7
3.4 燃烧产物密度计算 7
3.5 理论燃烧温度的计算 7
3.6 计算汇总 9
4 各段加热时间计算 10
4.1 预热段加热时间的计算 11
4.1.1 传热系数的计算 11
4.1.2 确定预热段的加热时间 13
4.2 加热段加热时间的计算 14
4.2.1 传热系数的计算 14
4.2.2 确定加热段的时间 16
4.3 确定均热时间 17
4.4 钢坯在炉内总的加热时间 18