电弧炉高温熔融处理焚烧飞灰技术应用研究

Application research on high temperature melting treatment of incineration fly ash by electric arc furnace

基于焚化厂飞灰电弧炉高温熔融处理设备应用案例,从飞灰预处理、进料、高温电弧炉、排渣系统、烟气处理等方面进行系统研究。结果表明:飞灰预处理将二次飞灰产率由7.5%降低到6.1%,并降低了二次飞灰中的Cl、S、Na、K、Zn、Pb含量;高温熔渣直接水淬提升了熔体结构密度和能源利用效率;复合陶瓷纤维滤筒可以实现烟气多种污染物的一体化脱除。

The application of electric arc furnace for high temperature melting treatment of fly ash was systematically studied from fly ash pretreatment,feeding,high temperature electric arc furnace,slag discharge system,flue gas treatment and so on.The results showed that the pretreatment of fly ash reduced the generation rate of secondary fly ash from 7.5%to 6.1%,and also reduced the content of Cl、S、Na、K、Zn、Pb in the secondary fly ash.Direct water quenching of high temperature slag improved the structure density of melt and energy utilization efficiency.The composite ceramic fiber filter could remove various pollutants in flue gas simultaneously.