Experimental characterization of gaseous species emitted by the fast pyrolysis of biomass and polyethylene |
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| Institution: | 1. Laboratoire de Physique et Chimie de l’Environnement, Université de Ouagadougou, 03 BP 7021 Ouaga 03, Burkina Faso;2. Laboratoire de Combustion et de Détonique (UPR 9028 CNRS), ENSMA – Téléport 2, 1 avenue Clément ADER, BP 40109, 86961 FUTUROSCOPE Cedex, France;3. Ecole des mines d’Albi Carmaux, Campus Jarlard, Route de Teillet, 81013 ALBI CT Cedex 09, France;1. Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre, 687, P-4169-007 Porto, Portugal;2. Instituto de Química Física “Rocasolano”, CSIC, Serrano 119, 28006 Madrid, Spain;1. Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;2. Chemistry Department, College of Science, King Saud University, Riyadh, 1145, Saudi Arabia;3. Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43300 UPM Serdang, Selangor, Malaysia;4. Catalysis Science and Technology Research Centre, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;1. Aalto University, School of Engineering, Department of Energy Technology, Applied Thermodynamics, PO Box 14400, FI-00076 Aalto, Finland;2. Aalto University, School of Electrical Engineering, Department of Electrical Engineering and Automation, Finland;3. Aalto University, School of Science, Department of Applied Physics and COMP CoE, PO Box 11000, FI-00076 Aalto, Finland;4. Brown University, Department of Physics, PO Box 1843, Providence, RI 02912, USA;1. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China;2. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;3. School of Chemistry and Chemical Engineering, Beifang University of Nationalities, Yinchuan 750021, Ningxia Hui Autonomous Region, China |
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| Abstract: | This study aims to experimentally characterize the carbonaceous and nitrogenous species, from the flash pyrolysis of millet stalks and polyethylene plastic bags, using the device of the tubular kiln, coupled to two gas analyzers: Analyzer Fourier Transform Infrared (FTIR) and an analyzer Infrared Non-Dispersive (IRND). Gaseous products analyzed are: CH4, C2H2, C2H4, C3H8, C6H6, CO, CO2, NO2, NO, N2O, HCN and NH3. Whatever the temperature of thermal degradation, the pyrolysis shows us that in terms of mass:- •For the millet stalks, the gaseous compounds are formed mainly CO and CO2 to the carbonaceous species, HCN and NH3, for the nitrogenous species analyzed;
- •As regards the polyethylene bags, hydrocarbons for carbonaceous species and HCN, NH3 and NO2 for the nitrogenous species, are most abundant.
In addition, the results suppose that in our experimental conditions, the hydrocarbon which is involved primarily in the formation of CO is ethylene C2H4. At the end of this characterization, we determined the rate of carbon and nitrogen found in the volatile gas. With millet stalks we have about 45% of volatile carbon and 15% of the nitrogen of fuel that are found in gaseous products. The results obtained with the plastic bags give 68% carbon and 15% nitrogen found in the nitrogenous species analyzed. |
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