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    STUDIA CHEMIA - Ediţia nr.2 din 2005  
         
  Articol:   MODELING AND SIMULATION OF THE LIMESTONE THERMAL DECOMPOSTION IN THE VERTICAL LIMEKILN.

Autori:  CĂLIN-CRISTIAN CORMOŞ, ANA-MARIA CORMOȘ, PAUL ŞERBAN AGACHI. 		 
       
         
  Rezumat:  A mathematical model of the limestone thermal decomposition process has been developed in order to determine the evolutions of temperature, solid and gaseous products distribution in the vertical limekiln. The modeling approach considers the kiln divided into four different subsystems: the gas phase, two solid phases (limestone and coke) and the kiln wall. The model incorporates a detailed mathematical description for the two phases presented into the system, also taking into account the heat transfer through the kiln wall. The gas phase, solid phases and kiln wall have been modeled using mass and heat balance equations for counter-current flow systems. Both time and spatial distribution for gaseous and solid components are described revealing the interactions between different subsystems considered. A variability study has been used to point out the main process variables and material properties included in the dynamic model. The dynamic model has been compared and fitted with process data collected from an industrial limekiln resulting in a dynamic simulator able to show the evolution of the main process variables versus time and space.  
         
     
         
         
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