For the given conversion of a first order exothermic reaction run adiabatically, which reactor will have...

For the given conversion of a first order exothermic reaction run adiabatically, which reactor will have the higher exit temperature? A) CSTR b) PFR c) same for PFR and CSTR d) cannot tell

Expert Solution

For the given conversion of a first order exothermic reaction that runs adiabatically, the PFR will have the higher exit temperature.

Reason:- Since the reaction is exothermic, the temperature increases as the reaction progresses.

In CSTR because of the assumption of perfect mixing, the temperature inside of the reactor at any instant of time will be the same.

So in CSTR as the temperature increases, as the reaction progresses, the high-temperature products will mix with the previously formed low-temperature products and attain a uniform temperature less than that of the high-temperature products.

On the other hand, In PFR as the reaction progresses along the length of the PFR, the temperature also increases. Because of the assumption of no back mixing in PFR, the previously formed low-temperature products cannot be mixed with the high-temperature products.

As a result of this, the product that we obtain from the exit of PFR will be of higher temperature.

Amanda K answered 2 years ago

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