Abstract: In order to determine the effect of composition and chlorine content in medical waste on PCDD/Fs（polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans）distribution，pyrolysis-combustion experiments were conducted with single component，two components and different chlorine contents. Results indicated that plastics with different chlorine content are different in both of PCDD/Fs generation and the concentration of chlorinated congeners. When PVC was combusted together with fiber，PCDD/Fs formation was enhanced，and the higher chlorinated congener was noticeably increased，which was varied with different PVC type. With the increase in chlorine content，the amounts of HxCDF，HpCDF and OCDF increased. No significant correlation between the total chlorine level in the fuel and the emission level of PCDD/Fs was observed. While，the yield of PCDD/Fs showed a conspicuous increase when chlorine content exceeded 1.73%. Furthermore，the PCDD/Fs formation characteristics were different for different PVC type even with the same chlorine content.

摘要： 为了研究医疗废物组分、氯含量对PCDD/Fs（polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans）分布特性的影响，对单组分、双组分及不同氯含量的医疗废物进行了热解－焚烧试验。通过对PCDD/Fs的分布特性分析，发现不同氯含量塑料生成PCDD/Fs的能力与氯代水平都有所不同。纤维对PVC焚烧生成PCDD/Fs有促进作用，并使其氯代水平有所提高，且对于不同PVC，这种作用有所不同。随着氯含量的增大，六、七、八氯代呋喃的产量呈增大趋势，二口恶英产量变化与氯含量的关联不是很明显，但当氯含量增大到1.73%时，其产量明显提高。相同氯含量不同PVC氯源的医疗废物其生成的PCDD/Fs特性不同。