期刊
FUEL
卷 251, 期 -, 页码 693-708出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2019.04.069
关键词
Municipal solid waste; Pyrolysis; Py-GC/MS; TG-FTIR; Kinetic analysis
资金
- National Natural Science Foundation of China [51776139, 51878557]
- National Key R&D Program of China [2018YFC1901305, 2017YFC0703101]
Typical five MSW components (paperboard, PVC, sawdust, cotton fabric, and vegetables) were examined by using Py-GC/MS and TG-FTIR. Py-GC/MS experimental results showed different products at 500 degrees C with varying percentage including benzene derivatives, phenolic compounds, acids, alcohols, aldehydes and ketones, alkanes, and other compounds and revealed that the pyrolyzed organic content in different components varied by the temperature gradient. During rapid pyrolysis of PVC at 600-800 degrees C, the yield of major plasticized pyrolysis products including benzene and toluene was significantly increased from 21.76 wt% to 39.45 wt% and 15.03 wt% to 22.33 wt%, respectively. The thermogravimetric analysis also revealed the degradation and significant conversion of components at higher temperatures. Furthermore, to have a better understanding, mixed waste pyrolysis results were also compared with the calculated mixed waste results. The results disclosed the strong interactions between the PVC pipe and vegetables. In addition, the binary mixture of PVC with other components also promoted low-temperature pyrolysis. Besides, paperboard also showed strong interaction with sawdust and cotton clothes. TG-FTIR results disclosed that when the chemical composition and constituents of waste components are similar, the composition becomes the main influencing factor for mixed pyrolysis. In addition, a kinetic approach was also employed to determine the activation energy of MSW components during pyrolysis and the activation energy of the pyrolysis of vegetables was found to be in lower range with 82.85 E/(kJ.mol(-1)) in comparison with other components.
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