CSTR Algorithm

For and adiabatic reaction with and , sketch conversion as a function of temperature.

Solution

A. For an exothermic reaction, is negative ΔH_RX(-),[ e.g., ΔH_RX= -100 kJ/mole A]




X increases with increasing T.




B. For an endothermic reaction,ΔH_RX is positive (+), X_EB increases with decreasing T.






For a first order reaction






Both the mole and energy balances are satisfied when X_MB=X_EB. The steady state temperature and conversion are T_SSand X_SS respectively for an entering temperature T_O.