Abstract Sulfur is widely present in waste tires and causes difficulty to recycle waste tires as a fuel, while removal of oxygen in biomass is an important premise for its effective utilization. In this study, high caloric fuel (HCF) was prepared by co-deoxy-liquefaction of willow leaves and waste tires. The influence of mixing ratio (0–100%) and temperature (300–500℃) on the product yields and chemical compositions of HCF were investigated. Results showed that the HCF obtained at 400 ℃with mixing ratio of 80/20 (willow leaves : waste tires, m/m) possessed the highest HHV (45.52 MJ/kg), highest alkane content (56.24%) and lowest oxygen content (1.79%). Preliminary analysis of mechanisms indicated that co-deoxy-liquefaction of the mixture inhibited the formation of liquid sulfur compounds, with much of the S element being eliminated from waste tires in the form of SO2, thus improving the quality of the HCF. Experiments also suggested that the overall efficiency of the deoxy-liquefaction of biomass and the desulfur-liquefaction of waste tires were both enhanced by adding waste tires to biomass. So, co-deoxy-liquefaction of biomass and waste tires presents a promising way of producing high caloric fuel with high quality in the future.

中文翻译：

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柳叶与废轮胎共脱氧液化生产高热量燃料

摘要 硫广泛存在于废轮胎中，导致废轮胎作为燃料的回收利用困难，而去除生物质中的氧气是其有效利用的重要前提。在这项研究中，通过柳叶和废轮胎的共脱氧液化制备了高热量燃料（HCF）。考察了混合比（0-100%）和温度（300-500℃）对HCF产品收率和化学成分的影响。结果表明，400 ℃混合比为80/20（柳叶：废轮胎，m/m）得到的HCF具有最高的HHV（45.52 MJ/kg）、最高的烷烃含量（56.24%）和最低的氧含量（ 1.79%）。机理的初步分析表明，混合物的共脱氧液化抑制了液态硫化合物的形成，废轮胎中的大部分 S 元素以 SO2 的形式被消除，从而提高 HCF 的质量。实验还表明，通过在生物质中加入废轮胎，可以提高生物质脱氧液化和废轮胎脱硫液化的综合效率。因此，生物质与废轮胎的共脱氧液化是未来生产高热量、高品质燃料的一种有前景的方法。