An irreversible aqueous phase reaction, A + B → P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m3 of each A and B enters the reactor at 8m3 /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed? Data: Heat of reaction = - 50 kJ/mole Density of the reacting mixture = 1000kg/m3 Specific heat of reacting mixture = 2kJ/kg.K The above data can be assumed to be independent of temperature and composition?
Correct answer: B. 290
- A. 190
- B. 290
- C. 390
- D. 490
Explanation
Complete reaction would release 4 kmol/m³ × 50 kJ/mol = 200,000 kJ/m³, producing a temperature rise of 200,000/(1000 × 2) = 100 K. Therefore, the inlet must not exceed 390 − 100 = 290 K.
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