Characterization of Styrene Recovery from the Pyrolysis of Waste Expandable Polystyrene
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- 作者：Jong Jin Park ; Kwinam Park ; Ji-Soo Kim ; Sanjeev Maken ; Hocheol Song ; Hochul Shin ; Jin-Won Park ; and Myung-Jae Choi
- 刊名：Energy & Fuels
- 出版年：2003
- 出版时间：November 2003
- 年：2003
- 卷：17
- 期：6
- 页码：1576 - 1582
- 全文大小：127K
- 年卷期：v.17,no.6(November 2003)
- ISSN：1520-5029
文摘
Catalytic and thermal degradation of waste expandable polystyrene (WEPS) have been studiedin a semi-batch reactor with continuous flow of nitrogen to achieve greater oil yield and maximizestyrene monomer recovery. Effect of temperature, nature of catalyst and its size, reaction timeof catalytic pyrolysis, and effect of repyrolysis have been also investigated. Higher reactiontemperature favors the oil yield and also decreases the reaction time with maximum styreneselectivity (76.31 wt %) at 450 
C. Among the catalysts studied, solid base BaO is found to be themost efficient and increases the styrene selectivity (84.29 wt %) significantly at a reactiontemperature of 350 C in comparison to thermal and acid catalytic degradation. Modified catalystFe-A/Al (A = basic material) also shows better activity than Fe2O3 or Fe/Al. Increase in the sizeof the catalyst and repyrolysis decrease the oil yield, and styrene production also decreases onrepyrolysis.
C. Among the catalysts studied, solid base BaO is found to be themost efficient and increases the styrene selectivity (84.29 wt %) significantly at a reactiontemperature of 350 C in comparison to thermal and acid catalytic degradation. Modified catalystFe-A/Al (A = basic material) also shows better activity than Fe2O3 or Fe/Al. Increase in the sizeof the catalyst and repyrolysis decrease the oil yield, and styrene production also decreases onrepyrolysis.