Chemical Reaction Engineering
The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))

400
500
1000
600

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Chemical Reaction Engineering
In case of staged packed bed reactors carrying out exothermic reaction, use

Plug flow for dilute liquid requiring no large preheating of feed
All of these
Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature
High recycle for pure gas

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