LFX-20型逆燃式医疗废物焚烧炉二恶英实测分析

概述我国目前医疗废物焚烧处置中的主要炉型,着重介绍LFX-20型逆燃式焚烧炉焚烧处置医疗废物的实际运行工况。在1燃室、2燃室平均温度分别为869.5℃和898.7℃条件下,对医疗废物焚烧烟气进行检测。各项常规指标均低于国标限值,二恶英检测中其质量浓度实测值为15ng/m3,相应毒性当量为0.46ngTEQ/m3,同时对医疗废物焚烧后产生烟气中二恶英和灰渣的检测结果进行了分析,焚烧后底渣体积约为焚烧前医疗废物体积的1/10,重量为原来的12%～18%,飞灰热灼减率为34.6%,并给出分析结果。

Measurement of Dioxins and Its Analysis for the LFX-20 Reversal-burning Medical Wastes Incinerator

Several types of incinerators were summarized,which were used in the treatment of the medical wastes in China.Then,the operating conditions for the LFX-20 reverse-burning incinerator were detailed.The flue gases resulting from the incineration of medical waste were measured when the primary combustion chamber and the secondary combustion chamber were respectively 869.5℃and 898.7℃.The results show that all the values of routine index are lower than the regulatory thresholds of the National Standard;the dioxins concentration is 15 ng/m3 and the TEQ(toxic equivalent quantity) is 0.46 ngTEQ/m3,which is below but close to the National Standard.Meanwhile,the measurement results of dioxins and clinker were analyzed,it shows that the volume of clinker after incineration is 1/10 of that of medical waste before incineration and the weight is 12% to 18% of the waste weight;The fly ash is reduced to 34.6% due to burning.