Pyrolysis and combustion kinetics of lycopodium particles in thermogravimetric analysis
来源期刊：中南大学学报(英文版)2015年第9期
论文作者：Seyed Alireza Mostafavi Sadjad Salavati Hossein Beidaghy Dizaji Mehdi BIDABADI
文章页码：3409 - 3417
Key words：lycopodium dust particles; thermogravimetric analysis; pyrolysis; combustion; ignition temperature; chemical kinetics
Abstract: Biomass is a kind of renewable energy which is used increasingly in different types of combustion systems or in the production of fuels like bio-oil. Lycopodium is a cellulosic particle, with good combustion properties, of which microscopic images show that these particles have spherical shapes with identical diameters of 31 μm. The measured density of these particles is 1.0779 g/cm2. Lycopodium particles contain 64.06% carbon, 25.56% oxygen, 8.55% hydrogen and 1.83% nitrogen, and no sulfur. Thermogravimetric analysis in the nitrogen environment indicates that the maximum of particle mass reduction occurs in the temperature range of 250-550 °C where the maximum mass reduction in the DTG diagrams also occurs in. In the oxygen environment, an additional peak can also be observed in the temperature range of 500-600 °C, which points to solid phase combustion and ignition temperature of lycopodium particles. The kinetics of reactions is determined by curve fitting and minimization of error.
Seyed Alireza Mostafavi1, Sadjad Salavati2, Hossein Beidaghy Dizaji2, Mehdi Bidabadi2
(1. Department of Mechanical Engineering, Faculty of Engineering, Arak University, Arak, 38156-88349, Iran;
2. School of Mechanical Engineering Department of Energy Conversion, Combustion Research Laboratory,
Iran university of Science and Technology, Narmak, Tehran, 16887, Iran)
Abstract:Biomass is a kind of renewable energy which is used increasingly in different types of combustion systems or in the production of fuels like bio-oil. Lycopodium is a cellulosic particle, with good combustion properties, of which microscopic images show that these particles have spherical shapes with identical diameters of 31 μm. The measured density of these particles is 1.0779 g/cm2. Lycopodium particles contain 64.06% carbon, 25.56% oxygen, 8.55% hydrogen and 1.83% nitrogen, and no sulfur. Thermogravimetric analysis in the nitrogen environment indicates that the maximum of particle mass reduction occurs in the temperature range of 250-550 °C where the maximum mass reduction in the DTG diagrams also occurs in. In the oxygen environment, an additional peak can also be observed in the temperature range of 500-600 °C, which points to solid phase combustion and ignition temperature of lycopodium particles. The kinetics of reactions is determined by curve fitting and minimization of error.
Key words:lycopodium dust particles; thermogravimetric analysis; pyrolysis; combustion; ignition temperature; chemical kinetics
