Estudio Cinético Del Proceso De Devolatilización De Biomasa Lignocelulósica Mediante Análisis Termogravimétrico Para Tamaños De Partícula DE 2 A 19 mm
- Andrés Melgar Bachiller 1
- David Borge Diez 1
- Juan F.. Perez 2
- 1 Grupo de Motores Térmicos y Energías Renovables- MYER, Universidad de Valladolid. Valladolid, España. Tecnologías
- 2 Grupo de Manejo Eficiente de la Energía, GIMEL, Facultad de Ingeniería, Universidad de Antioquia Spain. Tecnologías
ISSN: 0012-7353
Year of publication: 2008
Volume: 75
Issue: 155
Pages: 123-131
Type: Article
More publications in: DYNA: revista de la Facultad de Minas. Universidad Nacional de Colombia. Sede Medellín
Abstract
A chemical kinetic study of the biomass devolatilization process is presented looking for to improve the design of the biomass gasification-combustion systems and their kinetics (dimensional) models. The study is carried out by means of thermogravimetric tests, with biomass size between 2 – 19 mm, and with the heating rate of 10, 15 and 20 K/min. This work is developed because there are not available results on the literature with biomass size bigger than 1 mm. The experimental points are fitted by means of a first order model, to calculate the parameters of the kinetic constants (Arrhenius form). The activation energy is proportional to the heating rate and the biomass size. It can be seen that the thermal decomposition of the biomass is gotten at higher temperatures; due to the transports phenomena (heat and mass) are more relevant. The kinetic parameters calculated can be used in the biomass gasificationcombustion dimensional models, in function of the biomass size, to improve the simulation results.