Discussion
A CSTR is often preferred for a strongly exothermic reaction because
Answer: C
Correct answer: the well mixed contents control temperature
The vigorous mixing keeps the whole vessel at one temperature and puts the entire contents in contact with the heat transfer surface, so there is nowhere for a hot spot to develop. That is the CSTR’s decisive advantage for a strongly exothermic reaction, and it is bought at the cost of volume - the reactor is larger than a PFR of the same duty, not more productive.
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