Professional Reference Shelf

R13.6 Adiabatic Operation of Batch Reactors

 

    For adiabatic operationimage 09eq4.gifand when the work done by the stirrer can be neglectedimage 09eq5.gif  
       
   

image 09eq6.gif

(13-13)
       
    whereimage 09eq7.gifAn analytical solution relating X and T can be found for the case of constant or mean heat capacity.  
       
   

image 09eq8.gif

(13-15)
     
    multiplying by dt, separating variables and integrating between the initial conditions, X = 0 and T =T0, and later conditions X =X and T =T, yields  
       
   

image 09eq9.gif

 
       
    Taking the antilog, we have  
       
   
image 09eq10.gif
 
       
    solving for X yields  
       
   
image 09eq11.gif
 
       
    Then  
       
   
image 09eq12.gif
(13-16)
       
    This form is the same as the equation relating X and T derived for flow reactors. Rearranging yields  
       

Temperature
conversion
relationship for
an adiabatic batch
reactor

 
image 09eq13.gif
(13-17)