Abstract：
This study examines catalytic ability of various zeolite materials in converting discarded tire pyrolyzed oil by employing a moderate sized pyrolysis plant of a 10 L working volume. The study revealed that the yield of liquid fractions using γ-Al2O3 was greater than that of HZSM-5 and HY, while the yield of condensates were limited in the absence of catalyst. The tire waste pyrolysis oil catalytcially enhanced by alumina catalyst analyzed using Fourier transform infrared spectroscopy exhibited the stretching bands corresponding to aromatic and non-aromatic compounds. The GC MS analysis revealed that the cyclic unsaturated fragment percentages in liquids were decreased by the catalysts to 53.9% with HY, 59.0% with γ-Al2O3, and 62.2% with HZSM-5, which in turn was converted into aromatic chemicals. Nitrogen adsorption desorption analysis revealed that γ-Al2O3 has an enhanced surface area of 635 m2/g which improved its catalytic performance. The cracked liquid oil had viscosity (10.36 cSt), values of pour and flash temperatures of -2.2 °C and 41 °C respectively, analogous to petroleum diesel. The upgraded pyrolysis oil (10%) is blended with gasoline (90%), and emission analysis was performed. Moreover, liquid oil needs post treatment (refining) for its use as energy source in transportation application. The novelty of this research is in its comparative analysis of multiple catalysts under controlled conditions using a small pilot-scale pyrolysis reactor, which provides insights into optimizing the pyrolysis process for industrial applications.
摘要：
本研究通过采用中等尺寸的热解设备进行10L工作体积，研究了各种沸石材料在转化废弃轮胎热解油中的催化能力。γ-Al2O3的液体馏分收率大于HZSM-5和HY，而当催化剂不存在时形成的缩合物最少。当使用氧化铝催化剂使用傅立叶变换红外光谱分析增强的轮胎废热解油时，可见对应于芳香和非芳香化合物的拉伸带。GC-MS检查的结果进一步证实了这一点。γ-Al2O3催化剂比其他两种催化剂产生更大量的液体油。使用HY的催化剂将液体中的环状不饱和片段百分比降低至53.9％，γ-Al2O3为59.0%，HZSM-5为62.2%，产生芳香化学品。氮吸附-脱附分析表明,γ-Al2O3具有635m2/g的增大的表面积,这改善了其催化性能。裂解的液体油具有粘度（10.36cSt），浇注和闪蒸温度值分别为-2.2°C和41°C，类似于石油柴油。将升级的热解油(10%)与汽油(90%)混合并进行排放分析。此外，液体油需要后处理(精炼)作为能源在运输应用中的用途。这项研究的新颖之处在于使用小型中试规模的热解反应器在受控条件下对多种催化剂进行比较分析，这为优化工业应用的热解过程提供了见解。
