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    STUDIA CHEMIA - Ediţia nr.2 din 2004  
         
  Articol:   MODELING AND SIMULATION OF CALCIUM CARBONATE THERMAL DECOMPOSITION IN THE VERTICAL LIME KILN BASED ON THE SHRINKING UNREACTED CORE MODEL.

Autori:  VASILE-MIRCEA CRISTEA, ANA-MARIA CORMOȘ, DAMIAN TRIF. 		 
       
         
  Rezumat:  The paper presents the dynamic simulation results obtained by modelling the vertical lime kiln for thermal decomposition of limestone. The simulator relies on the rate controlling heat balance equations describing the advance of the reaction front in the spherical limestone boulder, according to the shrinking unreacted core model. The vertical lime kiln is considered to be divided in three distinct zones along the moving flux of the solids: heating, reaction and cooling zone. Each of the zones are described by the limestone boulder travelling down along the kiln height. Results reveal the time and space distribution of temperature in the lime kiln for both solids and gases, based on the time and space distribution of the temperature in the limestone boulder and the gases surrounding it. The dynamic simulator serves as a useful tool for investigating the way that lime kiln may be operated and controlled for improved performance.  
         
     
         
         
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