五环多环芳烃苯并[b]荧蒽、苯并[k]荧蒽、苯并[a]芘、二苯并[a，h]蒽属于高环多环芳烃，降解难度高、危害大，其中苯并[a]芘危害性最大，具有很强的致毒性和致癌性。通过竖式电炉模拟制备炼焦烟气，采用微波和吸波介质协同处理的方法，以二氯甲烷和玻璃纤维对多环芳烃进行收集，通过超声波萃取、高效液相色谱法检测技术，定性、定量分析炼焦烟气产生的五环多环芳烃，研究了微波-吸波介质处理五环多环芳烃实验时微波温度，以及吸波介质的质量、粒径、种类等实验因素对4种多环芳烃各分量及总量降解效果的影响。实验结果表明，当微波温度400℃、碳化硅吸波介质6 g时，总的降解率为72%，苯并[b]荧蒽、苯并[k]荧蒽、苯并[a]芘、二苯并[a，h]蒽降解率分别为79%、75%、72%和48%，处理效果较好，尤其苯并[a]芘降解率最高。

Five rings polycyclic aromatic hydrocarbons (PAHs) such as benzo[b] fluoranthene,benzo[k] fluoranthene,benzo[a] pyrene and dibenzo[a,h] anthracene are difficult to degrade and has huge harmfulness.Of which benzo[a] pyrene is the most harmful,with strong toxicity and carcinogenicity.The coking flue gas are prepared in simulation through a vertical electrical furnace,and PAHs are collected by dichloromethane and glass fiber together through the synergy treatment method combining microwave and wave absorbing media.The ultrasonic extraction and high performance liquid chromatography (HPLC) are used to qualitatively and quantitatively analyze the five rings PAHs in coking flue gas.The effects of microwave temperature,and the mass,particle size and species of wave absorbing media on the degradation efficiency of these four PAHs alone and in total are studied.The experimental results show that the total degradation rate is 72% and the degradation rates of benzo[b] fluoranthene,benzo[k] fluoranthene,benzo[a] pyrene and dibenzo[a,h] anthracene are 79%,75%,72% and 48% respectively when the microwave temperature is 400℃ and the mass of silicon carbide absorbing medium is 6 g.The treatment effect is good,especially the degradation rate of benzo[a] pyrene is the highest.