A countercurrent concentric tube heat exchanger is used to preheat a stream of gaseous O2 from 3 ° C to 65 ° C. This stream will feed a reactor. For heat exchange, a hot benzene stream (110ºC) is used...

A countercurrent concentric tube heat exchanger is used to preheat a stream of gaseous O2 from 3 ° C to 65 ° C. This stream will feed a reactor. For heat exchange, a hot benzene stream (110ºC) is used that comes from the bottom of a distillation tower at 45 psig and exits the exchanger at 75ºC. If 1800 kg / h of O2 at 65 ° C are required for normal reactor operation. IF the exchanger is perfectly insulated. Calculate:

(a) Benzene required (kg / min)

(b) Heat exchanged (kJ / s)

Extracted text: Top products To reactor Or T= 65°C Feed Benzene, L 75°C Нeat Benzene, L 45 psig 110°C O2 Products T= 3°C