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A study of optimization of solar pyrolysis and catalyst recovery and reuse

机译：太阳能热解和催化剂回收优化研究及再利用研究

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The use of renewable energy sources in the pyrolysis process for bio-oil production has gained a renewed interest. In this work, ex-situ catalytic solar pyrolysis (ECSP) of microalgae was performed using Mg-Al mixed oxides catalyst derived from hydrotalcite. The effects of biomass loading, reaction time, and catalyst percentage on the pyrolysis product were investigated. The condition that maximizes simultaneously the bio-oil yield and its hydrocarbon content was obtained in an optimization study. A study of the effect of catalyst reuse on the pyrolysis process was also performed. The results showed that high yields of bio-oil were found when intermediary values of independent variables were used. The use of the catalyst derived from hydrotalcite improved the quality of bio-oil, promoting a reduction of oxygenated compounds and forming aromatic and long-chain aliphatic hydrocarbons. High bio-oil yield (38.55%) with high hydrocarbon content (32.65%) was achieved under the optimal conditions. The study of the catalyst reuse showed that the structure and surface area of fresh and regenerated catalyst were very similar. In addition, the hydrocarbon content of bio-oil did not significantly change after three pyrolysis cycles.
机译：在生物油产量的热解过程中使用可再生能源已经获得了重新的兴趣。在这项工作中，使用衍生自水滑石钴的Mg-Al混合氧化物催化剂进行微藻催化太阳能热解（EcSP）。研究了生物质负载，反应时间和催化剂百分比对热解产物的影响。同时最大化的病症在优化研究中获得生物油产率及其烃含量。还进行了对催化剂再利用对热解过程的影响的研究。结果表明，当使用独立变量的中间值时，发现了高产的生物油。衍生自水滑石的催化剂改善了生物油的质量，促进了氧化化合物的还原并形成芳族和长链脂族烃。在最佳条件下实现高生物油产率（38.55％），在最佳条件下实现了高烃含量（32.65％）。催化剂再利用的研究表明，新鲜和再生催化剂的结构和表面积非常相似。此外，在三次热解循环后生物油的烃含量没有显着变化。

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