Continuously Operated Non-isothermal Ideal Tank Reactor CSTR

2 Continuously Operated Non-isothermal Ideal Tank Reactor (CSTR) 

For non-isothermal operation of a CSTR, the term non-isothermal only refers to the difference between the reaction temperature and the inlet temperature. For steady-state operation, the reaction temperature is constant at any time but higher (lower) than the feed temperature for an exothermic (endothermic) reaction. Thus, the heat and mass balances have to be examined simultaneously. The steady-state mass balance for an ideal CSTR, Eq. (4.10.17), for a first-order reaction with reactant A is given in terms of conversion and residence time as  

The conversion given by Eq. (4.10.19) and the Arrhenius equation for the rate constant yield  

The general steady-state heat balance of a CSTR with an exothermic reaction reads  

We will now discuss the two cases, adiabatic and cooled operation of a CSTR. 

---