Kinetic Study in Modeling Pyrolysis of Refuse Plastic Fuel
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- 作者：Binlin Dou ; Sungjin Lim ; Pilsun Kang ; Jungho Hwang ; Soonho Song ; Tae-U Yu ; Kyoon-Duk Yoon
- 刊名：Energy & Fuels
- 出版年：2007
- 出版时间：May 2007
- 年：2007
- 卷：21
- 期：3
- 页码：1442 - 1447
- 全文大小：167K
- 年卷期：v.21,no.3(May 2007)
- ISSN：1520-5029
文摘
For the pyrolysis of refuse plastic fuel (RPF), the typical particle size is large and the time required forpyrolysis is long. Therefore, the rate-limiting mechanisms of gas diffusion and chemical reaction might beimportant. In this paper, the kinetics of RPF pyrolysis was investigated through a thermogravimetry analysisunder isothermal conditions between 300 and 600 
C. A kinetic model was used to examine the effects of thesurface chemical reaction and gas diffusion on the rate-limiting steps of RPF pyrolysis. The results show thatthe rate was controlled by a combination of the surface chemical reaction and gas diffusion through the solidproduct layer. The activation energies for the surface chemical reaction and gas diffusion were determined tobe 70.2 and 65.9 kJ mol-1, respectively. The weight loss of RPF pyrolysis occurred mainly at temperatureshigher than 400 C and increased with temperatures. Concentrations of pyrolysis gases including H2, CO, andhydrocarbons were analyzed through a real-time gas analyzer. Gas yields from pyrolysis were sensitive totemperatures higher than 300 C, while a very small amount of gas was released at 300 C.
C. A kinetic model was used to examine the effects of thesurface chemical reaction and gas diffusion on the rate-limiting steps of RPF pyrolysis. The results show thatthe rate was controlled by a combination of the surface chemical reaction and gas diffusion through the solidproduct layer. The activation energies for the surface chemical reaction and gas diffusion were determined tobe 70.2 and 65.9 kJ mol-1, respectively. The weight loss of RPF pyrolysis occurred mainly at temperatureshigher than 400 C and increased with temperatures. Concentrations of pyrolysis gases including H2, CO, andhydrocarbons were analyzed through a real-time gas analyzer. Gas yields from pyrolysis were sensitive totemperatures higher than 300 C, while a very small amount of gas was released at 300 C.