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Effects of Moisture on Pyrolysis of Polypropylene |
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| Authors: | Chao-Hsiung Wu Ching-Yuan Chang Jyh-Ping Lin |
| Affiliation: | 1Assoc. Prof., Dept. of Envir. Engrg., Da-Yeh Univ., Chang-Hwa 515, Taiwan. 2Prof., Grad. Inst. of Envir. Engrg., National Taiwan Univ., Taipei 106, Taiwan. 3Assoc. Prof., Dept. of Envir. Engrg., Fushin Inst. of Technol., I-Lan 261, Taiwan. |
| Abstract: | The thermal degradation kinetics of polypropylene (PP) in steam was investigated with a thermal gravimetric analysis (TGA) reaction system. The experiments were carried out in the 500–800 K temperature range at various constant heating rates of 1, 2, and 5 K∕min. The partial pressure of steam in the system was adjusted to 0.24 atm, which is seen in most municipal solid waste (MSW) incinerators in Taiwan. The results indicated that the water molecule significantly enhanced the thermal degradation rate of PP. The corresponding activation energy, preexponential factor, and reaction order were determined. It was found that thermal degradation of PP in steam can be adequately described by an overall rate equation. |
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