Assessment of pyrolysis waste engine oil as an alternative fuel source for diesel engine
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Assessment of pyrolysis waste engine oil as an alternative fuel source for diesel engine A. Zahir Hussain1 · A. Santhoshkumar1 · Anand Ramanathan1 Received: 9 November 2019 / Accepted: 5 March 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract Disposal of hazardous waste engine oil (WEO) has become the forefront of climate change. Hence, the potential conversion of WEO is essential and also recycled through different pyrolysis techniques for better assessment. In this work, diesel-like fuel extracted from electrical pyrolysis and microwave pyrolysis was used as an alternative fuel for the CI engine. The pyrolysis oil generated by both pyrolysis processes was found to be reliable. Nevertheless, the physicochemical characteristics of both pyrolysis oil deviated from each other. The performance, combustion and emission characteristics of different pyrolysis fuel have been investigated to identify the suitable alternative fuel for CI engine. The performance characteristics at rated load revealed that the brake thermal efficiency of electrical pyrolysis oil (EPO) and microwave pyrolysis oil (MPO) was 26% and 25%, respectively, which was 0.8% and 1.5% lower than diesel due to its higher viscosity. Emission characteristic shows that unburnt hydrocarbon emission of EPO and MPO was higher than diesel by 7% and 15%, respectively. Similarly, the filter smoke number was 3% and 10% higher than diesel. NO emission of EPO and MPO was lower than diesel by 27% and 13%, respectively. Also, exergy analysis represents MPO has higher potential when compared to EPO due to higher exergy efficiency. Keywords Waste to energy · Pyrolysis · Performances · Emissions · Exergy Abbreviations AC Activated carbon ASTM American Society for Testing and Materials BTE Brake thermal efficiency/% BMEP Brake mean effective pressure/bar BSEC Brake specific energy consumption/MJ kWh−1 CA Crank angle/degree CI Compression ignition CO Carbon monoxide/vol% CO2 Carbon dioxide/vol% DI Direct injection EPO Electrical pyrolysis oil FEO Fresh engine oil FSN Filter smoke number GC–MS Gas chromatography and mass spectrometry HRR Heat release rate/J deg−1 CA−1 MAP Microwave-assisted pyrolysis MPO Microwave pyrolysis oil * Anand Ramanathan [email protected] 1
Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, TamilNadu 620 015, India
NCG Non-condensable gases NO Nitric oxide/ppm NOx Oxides of nitrogen/ppm PAHs Polycyclic aromatic hydrocarbons ppm Parts per million PO Pyrolysis oil UBHC Unburnt hydrocarbon/ppm WEO Waste engine oil
Introduction Waste management and waste treatment are one of the essential concerns of modern civilisation as it is challenging to find a collective treatment for them [1]. Most of the wastes are problematic to recycle, and huge amounts of landfilled waste resources are presented throughout the world. Disposal of hazardous wastes creates pollution issues and greenhouse gas emissions without the retrieval of toxic components [2]. Waste disposals such as spent engine o
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