文档介绍：华中科技大学
硕士学位论文
方箱管式加热炉炉内的强化传热研究
姓名:胡宪法
申请学位级别:硕士
专业:工程热物理
指导教师:靳世平
20060401
摘要
能源形势的日益紧张促使企业想方设法来节能降耗。宝钢化工 F2601 加热炉改造
项目就是这样一个大环境下的产物。
要寻求加热炉节能的途径我们必须首先了解引起加热炉的能量损失的因素。主要
有排烟损失、炉墙散热损失、不完全燃烧损失等。减小炉墙散热损失和不完全燃烧损
失的潜力是非常有限的,排烟损失是加热炉能量损失中最大的一部分,所以加热炉的
节能首先要从降低排烟温度入手。本文首先对加热炉效率与一些参数的关系进行了理
论上的分析,然后从理论上探讨了加热炉节能可能采取的一些措施,最后分析了这些
方法的优缺点,提出了旋流场燃烧节能技术。
本次改造分为热力计算、冷热态试验、现场改造几个方面。通过热力计算对改造
对加热炉的一些参数带来的影响进行定量分析,评价改造的安全性,同时通过热力计
算来确定改造参数、预估改造效果。冷态模拟可以看出烟气流场旋流比直流均匀、轴
向速度较直流时低、切向速度较直流大。热态试验得到了更加均匀的温度场分布和更
好的传热效果,同时管壁温度在安全允许的范围内增加。试验结论得出改造有助于燃
烧状况的改善和传热的增强。现场改造的效果证明了先前研究期间所作的推断是正确
的。改造后排烟温度比改造前降低了 40℃,炉膛火焰充满度大为改善,燃料量节约了
近 7%,带来了可观的经济效益。

关键词:双旋流场辐射筒排烟温度模型试验

I
Abstract
Serious lack of energy makes enterprise search for ways to save energy and reduce
loss. This is how the alteration of Baogang Chemical F2601 furnace came.
Exhaust gas loss, heat dissipating loss and carbon loss are the main factor of what take
furnace energy loss. Since the potential of decrease heat dissipating loss are limited, and
exhaust gas loss is the most part of all, exhaust gas loss can be decreased toether with
carbon loss. Therefore, to decrease the exhaust gas temperature is the key point of saving
energy.
This article firstly analyzed the relationship of furnace efficiency and some parameters
(surplus air, hearth pressure and so on). Then abstractly discussed the measure take to save
the furnace energy and finally the advantages and disadvantages of these measurements are
discussed. From the analysis, a new type bustion (double bustion) is
proposed firstly.
The retrofit included thermal calculation, cold simulation and hot-state experiment,
locale construction.
Thermal calculation can quantify the influence of retrofit to be furnace parameters,
evaluate the safety. And thermal calculation can also decide the retrofit parameters, forecast
retrofit effect. By cold-state simulation, we can find that double swirl field is more
un