In the chlorination reactor, the feed slurry enters at 50 C and the products leave at 65°C. Most of the heat generated by the reaction is transferred to cooling water flowing through a jacket surrounding the reactor. The cooling water enters at 15°C and leaves at 45°C.

(a) What becomes of the heat generated by the reaction that is not transferred to the cooling water?

(b) Using data given below and neglecting heat of solution effects, estimate the heat transferred to the cooling water (kJ/h) and the required flow rate (kg/h) of the cooling water.

Data

Heat of reaction at 50°C = -1770 kJ/(kg Cl₂ consumed)

Heat capacity of CPVC = 1.9 kJ/(kg∙°C)

Average heat capacity of hydrochloric acid = 4.0 kJ/(kg∙°C)

Estimate the temperature to which the product stream could rise if the cooling water flow were interrupted (i.e., if the reactor operation were to become adiabatic). List several serious problems that could result if this situation arises.