垃圾焚烧灰电弧熔融炉热工特性的研究  

Study on Thermal Performance of Waste Incineration Ash Arc-Melting Furnace

作　　者：刘汉桥[1] 魏国侠[2] 蔡九菊[3] 

机构地区：[1]天津城市建设学院能源与机械工程系,天津300384 [2]天津城市建设学院材料科学与工程系,天津300384 [3]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《工业炉》2010年第3期24-27,共4页Industrial Furnace

基　　金：国家自然科学基金青年科学基金项目(20806051);中国博士后科学基金项目(20080440680)

摘　　要：利用处理量为2 kg的直流电弧炉对医疗垃圾焚烧灰进行熔融实验研究。考察了电弧长度对弧电压、弧电流、熔池直径、熔融时间和电能单耗的影响。结果表明:随着弧长增大,弧电压呈近似线性增长,弧电流下降,熔池直径增大,熔融时间缩短,电能单耗降低。因此,在保证电弧稳定的前提下,应尽量采用长弧操作;与单独底灰熔融相比,飞灰/底灰混合熔融时的最大弧长较大,电能单耗较低;不足之处在于石墨电极单耗稍大。The melting experiment research of hospital waste incineration ash was carried out by using 2 kg DC arc-furnace. The effects of arc length on arc voltage, arc current, diameter of molten pool, melting time and specific power consumption were investigated. The experimental results indicated that when the arc length increased, the arc voltage linearly increased, the arc current was smaller, the pool diameter was greater, the melting time was shorter and the specific power consumption was lower. Under the premise of arc stability, a long arc operation should be adopted. Compared to a separate melting of the bottom ash, the maximum arc length when fly ash/bottom ash mixed melting was longer, and the specific power consumption was lower. The disadvantage was that the specific electrode consumption was a little larger.

关 键 词：医疗垃圾 焚烧灰 电弧炉 熔融 电弧长度 

分 类 号：TK175[动力工程及工程热物理—热能工程]