Derived oil production by catalytic pyrolysis of scrap tires
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- 作者：Wei Li ; liwei142421@126.com" class="auth_mail" title="E-mail the corresponding author ; Chuanfeng Huang ; Dapeng Li ; Pengju Huo ; Mingfeng Wang ; Lei Han ; Gang Chen ; Huihui Li ; Xiaohong Li ; Yongjuan Wang ; Mengyan Wang
- 关键词：Scrap tire ; Catalytic pyrolysis ; Derived oil ; Aromatic
- 刊名：Chinese Journal of Catalysis
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：37
- 期：4
- 页码：526-532
- 全文大小：1425 K
文摘
Scrap tires were pyrolyzed in a continuously stirred batch reactor in the presence and absence of catalysts. The maximum yield of derived oil was up to 55.65 wt% at the optimum temperature, 500 °C. The catalytic pyrolysis was performed using 1.0 wt% (on a scrap tire weight basis) of catalysts based on ZSM-5, USY, β, SAPO-11, and ZSM-22. The oil products were characterized using simulation distillation, elemental analysis, and gas chromatography-mass spectrometry. The results show that using a catalyst can increase the conversion of scrap tires to gas and decrease char by-products; the yield of derived oil remains unchanged or a little lower. The oils derived from catalytic pyrolysis had H/C ratios of 1.55–1.65 and contained approximately 70–75 wt% light oil, 0.3–0.58 wt% S and 0.78–1.0 wt% N. Catalysts with high acid strengths and appropriate pore sizes, such as ZSM-5, USY, β, and SAPO-11, increased the amount of single-ring aromatics in the light-middle-fraction oil to 45 wt%. The derived oil can therefore be used as a petrochemical feedstock for producing high-value-added chemical products or fuel oil.