Assessment of laminar flame velocity of producer gas from biomass gasification using the Bunsen burner method |
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| Affiliation: | 1. Mechanical Engineering Institute, Federal University of Itajubá – UNIFEI, Itajubá, MG, 37500-903, Brazil;2. UNA –Rua João Basílio, 420, Centro, Pouso Alegre, MG, Brazil;3. Universidade Santo Amaro, UNISA, Rua Humboldt, 29, Santo Amaro, SP, Brazil;1. School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China;2. School of Mathematics and Economics, Hubei University of Education, Wuhan 430205, China;3. Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Huanggang Normal University, Huanggang, 438000, China;4. Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, China;5. School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China;1. College of Energy Engineering, Zhejiang University, Hangzhou, 310027, China;2. College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou, 310018, China;3. School of Mechanical, Aerospace and Automotive Engineering, Coventry University, Coventry, CV1 5FB, United Kingdom;1. University of Oxford, United Kingdom;2. Shell Global Solutions, United Kingdom |
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| Abstract: | Producer gas is a renewable fuel obtained from gasification processes. This fuel may be burned directly in furnaces to supply thermal demands, or used to run internal combustion engines or gas turbines. The characteristics of producer gas have been studied by various authors, however, most studies generally use mixtures of synthetic gases to represent Producer Gas. The main goal of this study is to evaluate the laminar flame velocity of Producer Gas obtained from gasifying eucalyptus wood in a two-stage downdraft gasifier using the Bunsen burner method and the Schlieren image visualization technique to register the profile of the flame. The Producer Gas volume fractions that were used in the tests were 20%, 16%, and 1.8% for CO, H2, and CH4, respectively. This resulted in a 4.9 MJ/Nm³ lower heating value. The registered laminar flame velocity at the stoichiometric point under optimal conditions was 0.33 m/s. The tests were carried out at standard atmospheric pressure and atmospheric temperature. The results were compared to studies of other authors, and this study shows that fractions of Hydrogen (H2) and Carbon Monoxide (CO) in the Producer Gas result in increased laminar flame velocities, while fractions Nitrogen (N2) and Carbon Dioxide (CO2) result in reduced flame velocities. |
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| Keywords: | Laminar flame velocity Producer gas Gasification Downdraft gasifier Schlieren Visualization technique |
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