以氧化铝中空小球为床料的流化床焚烧甲苯气体试验研究

Experimental research on methylbenzene air fluidized bed incineration with small hollow Al_2O_3 bed material

采用循环流化床高温焚烧技术,以小密度的中空氧化铝小球作为床料,对具有代表性的甲苯气体进行了验证性焚烧试验,研究了甲苯在不同温度,不同浓度的焚烧效果。结果显示,低温阶段焚烧效果很差,达到临界温度750℃后,焚烧效果改善,850℃、50 m3/h下可以达到较好的甲苯分解率,甲苯燃烧后局部达到970～1000℃高温时可以达到较好的转化率;高温是影响甲苯转化率最重要的因素;增加停留时间有利于甲苯焚烧。

Using a high temperature circulating fluidized bed incineration technology with small hollow Al2O3 particle bed material, methylbenzene was selected as typical VOCs, the different combustion temperature and concentration ex- perimental test were performed. The result showed temperature played a very important role on conversion rate. Long residence time benefited the conversion.