Modeling of Coal Drying before Pyrolysis

Damintode Kolani (1) , Eric Blond (2) , Alain Gasser (2) , Tatiana Rozhkova (3) , Matthieu Landreau (3)

1 PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique
2 F2ME/MMH
3 CPM - Centre de Pyrolise de Marienau

The coking process is composed of two main stages: drying process and pyrolysis of coal. A heat and mass transfer model was developed to simulate the drying process of coal. The mechanisms of heat and mass transfer described in the model are: conduction through the coal cake; conduction and convection through the gas in pores; generation, flux and condensation of water vapor. The model has been implemented in finite element software. It requires basic data on the coke oven charge properties and oven dimensions as input. These input data were obtained by experiments or from the literature. The proposed model includes condensation and evaporation allowing us to reproduce the temperature plateau observed experimentally.

Mots clés: coal; drying; model; heat and mass transfer; vapor.; vapor

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Damintode Kolani, Eric Blond, Alain Gasser, Tatiana Rozhkova, Matthieu Landreau. Modeling of Coal Drying before Pyrolysis. Defect and Diffusion Forum, 2013, Vol. 336, pp.121-128. ⟨10.4028/www.scientific.net/DDF.336.121⟩. ⟨hal-00808039⟩