医疗废物焚烧工艺配套设计优化及焚烧系统性能测试分析

Optimization of supporting design for medical waste incineration process and testing analysis of incineration system performance

  • 摘要: 为了高效、安全、达标地焚烧医疗废物,对主焚烧工艺配套设备(一燃室、二燃室)设计核算并进行设计参数复核;选定锯末和木块作为标准测试废物的基体,对焚烧系统在焚烧过程中的氯化氢去除率、重金属汞去除率、燃烧效率、残渣热灼减率、烟尘去除率、二噁英排放浓度与性能评分的变化进行研究。采用热工程理论计算方法,对一燃室和二燃室体积进行计算;并测定焚烧过程中性能指标数的变化,用SPSS 22软件进行模型相关性分析。结果表明:反算一燃室、二燃室体积分别为1.20、3.30 m3,均小于实际炉膛内体积,满足要求。性能评分与氯化氢去除率、重金属汞去除率、烟尘去除率、燃烧效率呈极显著正相关关系(R分别为0.965、0.966、0.982、0.997),性能评分与热灼减率呈极显著负相关关系(R为−0.986),性能评分与二噁英排放浓度呈显著负相关关系(R为−0.957)。

     

    Abstract: In order to realize efficient, safe incineration of medical waste, meeting with the environmental standards, the design calculation for the main incineration process supporting equipment (including primary combustion chamber and secondary combustion chamber) was carried out and the design parameters were reviewed. Sawdust and wood blocks were used as substrates for test waste. The parameters of the incineration process, including hydrogen chloride removal rate, heavy metal mercury removal rate, combustion efficiency, residual heat removal rate, soot removal rate, dioxin emission concentration, and overall system performance score, were studied. The volumes of the primary combustion chamber and secondary combustion chamber were determined using methods of thermal engineering theory. Performance metrics were monitored during the incineration process, and correlation analysis was conducted using SPSS 22. The results showed that the volumes of the primary combustion chamber and secondary combustion chamber were inversely calculated as 1.20 and 3.30 m³, respectively, both of which were smaller than the actual furnace volume and met the requirements. The performance score exhibited a strong positive correlation with the removal rates of hydrogen chloride, heavy metal mercury, soot, and combustion efficiency (R=0.965, 0.966, 0.982, 0.997, respectively). Conversely, the performance score was significantly negatively correlated with thermal degradation rate (R=−0.986) and dioxin emission concentration (R=−0.957).

     

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