Combustion Kinetics of Char Obtained by Flash Pyrolysis of Pine Wood

摘要: The combustion kinetics of rapidly pyrolyzed wood have been investigated within the temperature range 573−773 K and oxygen concentration 2.25−36 vol %. These are, for instance, required design a char section in an integrated flash pyrolysis pilot plant. Two different experimental techniques were used: standard thermogravimetrical technique (TGA) flue gas analysis after diluted packed bed. was prepared small screen heater reactor, enabling heating rates over 300 K/s. results TGA packed-bed measurements are good agreement temperatures above 648 K. Below that temperature, reaction rate observed appears to be (up 1.5 times) lower than reactor. can described by following simple equation which has average deviation 20%: r = 5.3 × 105e-125×103/RTPO20.53(1 − X)0.49. Several pore models reported literature tested against data, but they could not improve accuracy fit. In comparison with available this specific type shows notably higher combustion.