Abstract The dried and pulverized medical solid waste was pyrolyzed at 500 °C, and the components and characteristics were analyzed after the solid, liquid and gas products were collected respectively. Experimental results showed that the combustible component in the obtained gas product accounted for 83.22% and the heat value was 10,995.02kcal/Nm3. The liquid product obtained was black viscous tar with a heat value of 8972.82 kcal/kg, GC/MS analysis indicated that hydrocarbons and lipids accounted for about 60% of liquid product, and the carbon chain length of the products is C6–C28. The carbon content of solid product after purification was up to 63.13%, and the heat value was 5454.54 kcal/kg. Furthermore, in order to make the most of the pyrolysis oil, the liquid product was separated and purified by fractional condensation under the condition of decompression. The effect of process parameters such as vacuum degree and condensing temperature was emphasized, and the optimum technological condition was obtained as follows: vacuum degree 0.04 MPa, heating temperature 140 °C and the first stage condensing temperature was 70 °C. Finally, the viscosity measurement of the residual high-viscosity components was intended to provide data support for the solution of tar plugging equipment and piping problems in practical applications.

中文翻译：

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医疗废物热解产物特性及热解油分馏研究

摘要 将干燥粉碎的医疗固体废物在500 ℃下热解，分别收集固体、液体和气体产物后，对其成分和特性进行分析。实验结果表明，所得气体产品中可燃成分占83.22%，热值为10995.02kcal/Nm3。得到的液体产物为黑色粘稠焦油，热值为8972.82 kcal/kg，GC/MS分析表明烃类和脂类约占液体产物的60%，产物的碳链长度为C6-C28。提纯后的固体产品含碳量高达63.13%，热值为5454.54 kcal/kg。此外，为了充分利用热解油，液体产物在减压条件下分馏分离纯化。强调了真空度和冷凝温度等工艺参数的影响，得到最佳工艺条件为：真空度0.04 MPa，加热温度140℃，一级冷凝温度70℃。最后，对残余高粘度组分进行粘度测量，旨在为解决实际应用中的焦油堵塞设备和管道问题提供数据支持。加热温度140℃，一级冷凝温度70℃。最后，对残余高粘度组分进行粘度测量，旨在为解决实际应用中的焦油堵塞设备和管道问题提供数据支持。加热温度140℃，一级冷凝温度70℃。最后，对残余高粘度组分进行粘度测量，旨在为解决实际应用中的焦油堵塞设备和管道问题提供数据支持。