Modeling the temperature in coal char particle during fluidized bed combustion
Апстракт
The temperatures of a coal char particle in hot bubbling fluidized bed (FB) were analyzed by a model of combustion. The unsteady model includes phenomena of heat and mass transfer through a porous char particle, as well as heterogeneous reaction at the interior char surface and homogeneous reaction in the pores. The parametric analysis of the model has shown that above 550 degrees C combustion occurs under the regime limited by diffusion. The experimental results of temperature measurements by thermocouple in the particle center during FB combustion at temperatures in the range 590-710 degrees C were compared with the model predictions. Two coals of different rank were used: lignite and brown coal, with particle size in the range 5-10 mm. The comparisons have shown that the model can adequately predict the histories of temperatures in char particles during combustion in FB. In the first order, the model predicts the influence of the particle size, coal rank (via porosity), and oxygen c...oncentration in its surroundings. (C) 2007 Elsevier Ltd. All rights reserved.
Кључне речи:
fluidized bed / coal combustion / modeling / temperatureИзвор:
Fuel, 2008, 87, 6, 905-914
DOI: 10.1016/j.fuel.2007.05.020
ISSN: 0016-2361
WoS: 000253894800033
Scopus: 2-s2.0-38849167570
Колекције
Институција/група
VinčaTY - JOUR AU - Manovic, Vasilije AU - Komatina, Mirko AU - Oka, Simeon N. PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3379 AB - The temperatures of a coal char particle in hot bubbling fluidized bed (FB) were analyzed by a model of combustion. The unsteady model includes phenomena of heat and mass transfer through a porous char particle, as well as heterogeneous reaction at the interior char surface and homogeneous reaction in the pores. The parametric analysis of the model has shown that above 550 degrees C combustion occurs under the regime limited by diffusion. The experimental results of temperature measurements by thermocouple in the particle center during FB combustion at temperatures in the range 590-710 degrees C were compared with the model predictions. Two coals of different rank were used: lignite and brown coal, with particle size in the range 5-10 mm. The comparisons have shown that the model can adequately predict the histories of temperatures in char particles during combustion in FB. In the first order, the model predicts the influence of the particle size, coal rank (via porosity), and oxygen concentration in its surroundings. (C) 2007 Elsevier Ltd. All rights reserved. T2 - Fuel T1 - Modeling the temperature in coal char particle during fluidized bed combustion VL - 87 IS - 6 SP - 905 EP - 914 DO - 10.1016/j.fuel.2007.05.020 ER -
@article{ author = "Manovic, Vasilije and Komatina, Mirko and Oka, Simeon N.", year = "2008", abstract = "The temperatures of a coal char particle in hot bubbling fluidized bed (FB) were analyzed by a model of combustion. The unsteady model includes phenomena of heat and mass transfer through a porous char particle, as well as heterogeneous reaction at the interior char surface and homogeneous reaction in the pores. The parametric analysis of the model has shown that above 550 degrees C combustion occurs under the regime limited by diffusion. The experimental results of temperature measurements by thermocouple in the particle center during FB combustion at temperatures in the range 590-710 degrees C were compared with the model predictions. Two coals of different rank were used: lignite and brown coal, with particle size in the range 5-10 mm. The comparisons have shown that the model can adequately predict the histories of temperatures in char particles during combustion in FB. In the first order, the model predicts the influence of the particle size, coal rank (via porosity), and oxygen concentration in its surroundings. (C) 2007 Elsevier Ltd. All rights reserved.", journal = "Fuel", title = "Modeling the temperature in coal char particle during fluidized bed combustion", volume = "87", number = "6", pages = "905-914", doi = "10.1016/j.fuel.2007.05.020" }
Manovic, V., Komatina, M.,& Oka, S. N.. (2008). Modeling the temperature in coal char particle during fluidized bed combustion. in Fuel, 87(6), 905-914. https://doi.org/10.1016/j.fuel.2007.05.020
Manovic V, Komatina M, Oka SN. Modeling the temperature in coal char particle during fluidized bed combustion. in Fuel. 2008;87(6):905-914. doi:10.1016/j.fuel.2007.05.020 .
Manovic, Vasilije, Komatina, Mirko, Oka, Simeon N., "Modeling the temperature in coal char particle during fluidized bed combustion" in Fuel, 87, no. 6 (2008):905-914, https://doi.org/10.1016/j.fuel.2007.05.020 . .