微波联合吸波介质处理炼焦烟气中多环芳烃

摘要

采用竖式电炉模拟制备炼焦烟气,通入微波管式炉,微波和吸波介质协同处理,以二氯甲烷和玻璃纤维对多环芳烃进行收集,采用超声波萃取、高效液相色谱法检测技术,定性、定量分析炼焦废气产生的多环芳烃(PAHs).研究了不同处理温度和吸波介质对炼焦烟气中多环芳烃处理效果的影响.结果表明,当微波温度400℃、m=6g、吸波介质为碳化硅时,处理效果最好,处理效率达49％.可以得出,微波与吸波介质共同作用对炼焦烟气有一定的降解效果.%The vertical electric furnace simulation preparation of coke smoke was used,into the microwave tube furnace,microwave and absorbing media co-processing,The polycyclic aromatic hydrocarbons (PAHs) produced by coking waste gas were analyzed by ultrasonic extraction and high performance liquid chromatography.The effects of different treatment temperature and absorbing media were studied by using dichloromethane and glass fiber.On the treatment of polycyclic aromatic hydrocarbons in coke,the results show that when the microwave temperature is 400 ℃ and m =6 g,the absorbing medium is silicon carbide,the treatment effect is the best and the treatment efficiency is up to 49％.It can be concluded that the combination of microwave and absorbing media has a certain effect on the pyrophoric flue gas.