富氧燃烧浮法玻璃熔窑火焰空间的数值模拟  

Numerical Simulation of Oxygen Enrichment Combustion in the Combustion Space of a Float Glass Furnace

作　　者：韩达[1] 谢峻林[1] 梅书霞[1] 金明芳[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2009年第22期55-58,62,共5页Journal of Wuhan University of Technology

基　　金："十一五"国家科技支撑计划(2006BAF02A26)

摘　　要：针对一650 t/d富氧燃烧燃油浮法玻璃熔窑火焰空间建立三维数学模型,并进行了数值模拟,其中气相用双方程κ-ε湍流模型,离散相采用DPM模型,燃烧采用非预混燃烧模型,辐射采用DO模型。模拟结果表明,与空气助燃相比:富氧燃烧时火焰温度显著提高,窑长方向"热点"突出,有利于泡界线的形成,但窑宽方向的温度梯度变大,易造成"跑料"现象;整体上熔窑碹顶温度分布变化不大;碹顶附近气流速度变小,但玻璃液面附近气流速度变大;相比之下,富氧燃烧比空气燃烧有更高的热传递效率。总的来说,通过对熔窑结构进行合理设计,富氧燃烧能够取得更好的经济效益。Based on a 650 t/d oxygen enrichment combustion float glass furnace, a three dimensional mathematical model has been devdoped. The gas phase is exprexsed with k-ε two-equation modal; the combustion is described with non-premixed model; the radiation is expressed with Discrete Ordinates Radiation Model. Compared with the air-fired case, mine conclusions are as follows： temperature during the oxygen enrichment combustion is more higher, and the ＂hot spot＂ along the furnace is evident, which is in favor of the form of the foam line, but the temperature gradient is high across the furnace, which can cause ＂running batch＂; the crown temperature varies slightly; the velocity is higher near the glass and lower near the crown; a higher thermal efficiency is shown. Generally speaking, the use of oxygen enrichment combustion in the float glass furnace will be more economically beneficial, if the design of the furnace can be optimized.

关 键 词：富氧燃烧 玻璃熔窑 火焰空间 数值模拟 

分 类 号：TQ171.6[化学工程—玻璃工业]