(Modified P8•9B) The gas•phase exothermic elementary reactionis carried out in a moving-be...

(Modified P8•9B) The gas•phase exothermic elementary reaction

is carried out in a moving-bed reactor.

Heat is removed by a heat exchanger jacketing the reactor.

The flow rate of the coolant in the exchanger is sufficiently high that the ambient temperature is constant at 50°C. Pure A enters the reactor at a rate of

5.42 molls at a concentration of 0.27mol/dm3. Both the solid catalyst and the reactant enter the reactor at a temperature of 450 K. and the heat transfer coefficient between the catalyst and gas is virtually infinite. The heat capacity of the soild catalyst is 100 J/kg cat/K.