Department of Mechanical Engineering, Government College of Technology, Coimbatore, India.
Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India.
Environ Sci Pollut Res Int. 2018 Nov;25(33):33806-33819. doi: 10.1007/s11356-018-3319-x. Epub 2018 Oct 2.
The present research focuses on the analyzing the characteristics of bio-oil derived from intermediate pyrolysis of Aegle marmelos (AM) seed cake and its suitability for C.I. engine adaptation. Owing to the high volatile matter content of 73.69%, Aegle marmelos biomass was selected as the feedstock for this research. The intermediate pyrolysis was carried out at 600 °C in a 2-kg fixed bed type pyrolysis reactor at a heating rate of 10 °C/min and the obtained bio-oil was characterized by different analytical methods. As per American Society for Testing and Materials (ASTM) standards, physicochemical properties of the bio-oil were tested and it was observed that bio-oil is a highly viscous fluid with low calorific value. Analysis of bio-oil through FT-IR and GC-MS examination confirmed the presence of phenol, esters, alkyl, and oxygenated compounds. The performance and emission testing of direct injection diesel engine were conducted with various bio-oil blends and the results were compared with baseline diesel fuel. The experimental results showed that the addition of bio-oil decreased BTE (%) while increasing the BSEC (MJ/kW-h). At the same time, increasing the bio-oil ratio with diesel decreases dangerous emissions such as carbon monoxide and oxides of nitrogen emissions in the engine exhaust. According to engine test result, it was suggested that up to 20% of AM bio-oil (F20) can be employed as engine fuel for better engine operating characteristics.
本研究重点分析了从中性热解 Aegle marmelos (AM) 种子饼中获得的生物油的特性及其对 C.I. 发动机适应性的影响。由于高挥发性物质含量为 73.69%，因此选择 Aegle marmelos 生物质作为本研究的原料。在 600°C 的 2 公斤固定床式热解反应器中以 10°C/min 的加热速率进行中间热解，并用不同的分析方法对得到的生物油进行了表征。根据美国材料与试验协会 (ASTM) 标准，对生物油的物理化学性质进行了测试，结果表明生物油是一种具有低热值的高粘性流体。通过 FT-IR 和 GC-MS 分析证实生物油中存在酚类、酯类、烷基和含氧化合物。通过使用各种生物油混合物对直喷式柴油机进行性能和排放测试，并将结果与基准柴油燃料进行比较。实验结果表明，生物油的添加降低了 BTE（%），同时增加了 BSEC（MJ/kW-h）。同时，随着生物油与柴油的比例增加，发动机废气中的一氧化碳和氮氧化物等危险排放物会减少。根据发动机测试结果，建议使用高达 20%的 AM 生物油 (F20) 作为发动机燃料，以获得更好的发动机运行特性。
