Dynamics of physical characteristics of biowaste during pyrolysis

Kinetic Modeling of Coal/Agricultural By-Product Blends

“…Pyrolysis studies, using thermal analysis methods, have been previously performed with wood/cellulosic, fossil fuels, plastics/resins/foam, and biomass/municipal solid waste materials. [1][2][3][4][5][6] There is a diversity of opinions in the specialized literature, dealing with the thermal decomposition of lignocellulosic materials, due to the complexity of the process. 7,8 The large majority of the available kinetic studies points to a poor fit of simple reaction models in the whole range of conversions, and a break point is frequently included in the calculations, to obtain satisfactory fits to the experimental results.…”

“…Pyrolysis studies, using thermal analysis methods, have been previously performed with wood/cellulosic, fossil fuels, plastics/resins/foam, and biomass/municipal solid waste materials. − There is a diversity of opinions in the specialized literature, dealing with the thermal decomposition of lignocellulosic materials, due to the complexity of the process. , The large majority of the available kinetic studies points to a poor fit of simple reaction models in the whole range of conversions, and a break point is frequently included in the calculations, to obtain satisfactory fits to the experimental results. , Alternative solutions consist of calculating distribution functions for the activation energies, or using models of consecutive or independent reactions. ,− A first- order reaction has been widely considered for the decomposition of the whole biomass, or for the formation of some products, or for the the scheme of the two or three series of reactions proposed, ,,− although other reaction orders have been also referred to in the literature. ,, Several authors ,, have investigated the kinetics of biomass materials; however, only a few have determined the kinetics of their blends with coals.…”

Analysis of Hydrocarbons and Ash Particles Formed from Contaminated Industrial Biowaste under Combustion-like Conditions

“…The experiments simulating events occurring during the LHL process were conducted in a computercontrolled facility consisting of a high-temperature Cahn TG-171 thermogravimetric furnace with maximum sample size of 100 g coupled with a Mattson Galaxy 5020 Fourier transform infrared spectrometer. This system has been described in detail elsewhere (7); therefore, only brief description is given here. Since the sample has to remain stationary inside the cylindrical ceramic crucible (15 mm diameter) placed in the combustion chamber (30 mm diameter), biowaste "movement" through the LHL regions was simulated by programming the temperature ramps as illustrated in Figure 1 (top).…”