Plastic waste elimination by co-gasification with coal and biomass in fluidized bed with air in pilot plant |
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| Affiliation: | 1. Biomass Processing Laboratory, Centre of Biofuel and Biochemical Research, Department of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Perak, Malaysia;2. Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Malaysia campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia;3. Department of Chemical Engineering, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates;1. Process Engineering and Technologies Postgraduate Program, University of Caxias do Sul, 95070-560, Caxias do Sul, RS, Brazil;2. Mining Engineering, Metallurgical and Materials Postgraduate Program, Federal University of Rio Grande do Sul (UFRGS), 90650-002, Porto Alegre, RS, Brazil;3. Chemical Engineering Undergraduate Program, University of Caxias do Sul, 95070-560, Caxias do Sul, RS, Brazil;1. Department of Chemical Engineering, University of the Basque Country, P.O. Box 644, E-48080, Bilbao, Spain;2. Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba, Aramaki-aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan;3. Japan Society for the Promotion of Science, 8 Ichibancho, Chiyoda-ku, Tokyo 102-8472, Japan;4. Energy Research Institute, Faculty of Engineering, University of Leeds, Leeds LS2 9JT, UK |
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| Abstract: | Treatment of plastic waste by gasification in fluidized bed with air using dolomite as tar cracking catalyst has been studied. The gasifier has a 1 m high bed zone (diameter of 9.2 cm) followed by a 1 m high freeboard (diameter of 15.4 cm). The feedstock is composed of blends of plastic waste with pine wood sawdust and coal at flow rates of 1–4 kg/h. Operating variables studied were gasifier bed temperature (750–880 °C), equivalence ratio (0.30–0.46), feedstock composition and the influence of secondary air insertion in freeboard. Product distribution includes gas and char yields, gas composition (H2, CO, CO2, CH4, light hydrocarbons), heating value and tar content in the flue gas. As a result, a gas with a medium hydrogen content (up to 15% dry basis) and low tar content (less than 0.5 g/mn3) is obtained. |
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