热能与动力工程毕业论文

热能与动力工程毕业论文

热能与动力工程毕业论文

题目：热轧板厂180t/h蓄热式步进加热炉设计

专业：热能与动力工程

热能与动力工程毕业论文

摘 要

本设计题目是包钢热轧板厂180t/h蓄热式连续加热炉，在借鉴已有相关文献的基础上，对加热炉进行了设计和计算，主要包括初步设计和技术设计。初步设计对加热炉的选型结构做出来初步的选择；技术设计对加热炉设计进行全面的热力计算并确定了加热炉的主要技术参数、结构形式加热炉重要辅助设备进行选择。通过本次毕业设计，改善蓄热式燃烧技术，节约了燃料，提高炉子热效率，提高了产量及产品质量，同时减少了对环境的污染，达到了节能减排的目标。

由于本设计采用了先进的蓄热式高温空气燃烧技术，该技术拥有多方面的优势，尤其在节能降耗和环保方面取得了很大的成效，相信在国内会拥有广阔的发展前景。

关键词: 加热炉；高炉煤气；蓄热式燃烧；高效节能

热能与动力工程毕业论文

ABSTRACT

In this paper, Baogang Hot MILL 180 t / h for Regenerative furnace requirements of a graduation project Reference has been in the literature on the basis of blast furnace gas to fuel the furnace design a comprehensive thermal calculation。Including combustion, the heating time, the metal structure, masonry design, heat balance calculation. In the projector adumbrate the blast and the air at the same time,not only

improve the thermal efficiency,but efficiedcly make use of the blast furnace gas.Focus

on the selection process heating furnace, the heating time and load calculation of changes in how the changes in operating parameters were studied and discussed, the furnace important supplementary equipment selection, concluded that the design and the work of the next step Their ideas and perspectives.Through this graduate design and improve regenerative combustion technology, to improve the thermal efficiency of the stove, the goal of improving product quality, while using the stove vaporization cooling system, reducing the water pipes and India to ensure heating quality.

Because the design adopted the high temperature air combustion technology, it owned the various advantage, particularly at economized on energy to decline to consume and environmental protection to obtain the very big result，we believed that it will own vast development foreground in the domestic。

Keywords: furnace，blast furnace gas，regenerative comb ustion，high efficiency

and energy saving

河北联合大学轻工学院 毕业设计目录

目 录

引 言 ............................................................................................................................ 1 1 绪论 .......................................................................................................................... 2 1.1蓄热式燃烧技术的历史发展与现状 .................................................................. 2 1.1.1蓄热式燃烧技术的历史 ............................................................................... 2 1.1.2 蓄热式燃烧技术的发展 .............................................................................. 2 1.2 蓄热式（高温空气）燃烧技术的特点 ............................................................. 3 1.3 国内外的研究现状 ............................................................................................. 4 1.3.1 国外研究现状 .............................................................................................. 4 1.3.2 国内研究现状 .............................................................................................. 5 1.4 蓄热式加热炉发趋势及展展望 ......................................................................... 6 1.5 开发与应用高温空气燃烧技术的前景 ............................................................. 6 2 初步设计 .................................................................................................................. 8 2.1 燃料的选择 ......................................................................................................... 8 2.2 加热工艺的确定 ................................................................................................. 9 2.3 炉型选择 ........................................................................................................... 10 2.4 料坯布置方式及加热方式的选择 ................................................................... 12 2.5 料坯的装出炉方式 ........................................................................................... 12 2.6 选择燃烧装置的形式及其安装位置的确定 ................................................... 13 2.7 换热装置的形式及其换向系统的确定 ........................................................... 14 2.8 炉子供风和排烟系统 ....................................................................................... 15 2.9 炉底水管的确定 ............................................................................................... 15 2.10 炉子的钢结构及冷却系统的确定 ................................................................. 17 2.11炉子的机械化及自动化 .................................................................................. 18 3

技术设计 .............................................................................................................. 19 3.1燃料燃烧计算 .................................................................................................... 19 3.1.1燃料成分及发热值 ..................................................................................... 19 3.1.2 燃料所需空气量计算 ................................................................................ 20 3.1.3 单位燃烧产物的计算 ................................................................................ 20

河北联合大学轻工学院 毕业设计目录

3.1.4 理论燃烧温度的计算 ................................................................................ 21 3.2炉膛热交换计算 ................................................................................................ 22 3.2.1 炉膛尺寸的确定 ........................................................................................ 22 3.2.2 金属出炉参数的确定 ................................................................................ 23 3.2.3 算各段炉气平均有效射线行程 ................................................................ 23 3.2.4 预定各段炉气温度 .................................................................................... 24 3.2.5 计算各段炉气黑度 .................................................................................... 24 3.2.6 各段炉顶和炉墙对金属的辐射角度系数 ................................................ 24 3.2.7 计算各段炉气的平均综合辐射系数 ........................................................ 25 3.3

金属加热计算 .................................................................................................. 25 3.3.1 温度制度的确定及边界条件 .................................................................... 26 3.3.2 均热段炉气温度校核 ................................................................................ 26 3.3.3 金属加热的各段热流密度计算 ................................................................ 27 3.3.4 金属加热时间的计算 ................................................................................ 28 均热段加热时间 .................................................................................................. 31 3.4 炉子主要尺寸的确定 ........................................................................................... 31

3.4.1 计算炉子长度 ............................................................................................ 31 3.4.2 炉子结构和操作参数 ................................................................................ 31 3.4.3 炉门数量和尺寸的确定 ............................................................................ 32 3.4.4 炉膛各部分用耐火材料及其尺寸的确定 ................................................ 33 3.4.5 炉底水管结构尺寸 .................................................................................... 34 3.5 炉底水管强度计算 ............................................................................................... 35

3.5.1 炉底水管布置特点 .................................................................................... 36 3.5.2 炉底水管强度计算原则 ............................................................................ 36 3.5.3 固定梁和步进梁的强度计算 .................................................................... 37 3.6炉膛热平衡和燃料消耗量的计算 ........................................................................ 43

3.6.1 炉膛热收入项 ............................................................................................ 44 3.6.2 炉膛热支出项 ............................................................................................ 44 3.6.3 炉膛热平衡及燃料消耗量的计算 ............................................................ 55

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