You are designing a plug-flow reactor for the following gas-phase reaction:
A D
k1=15 ft3/ lb mol*s
Unfortunately, there is also a side reaction:
A U
U is a pollutant and costs money to dispose of; D is the desired product.
(a) What size of reactor will provide an effluent stream at the maximum dollar value? D has a value of $60/lb mol; it costs $15 per lb mol to dispose of U. A has a value of $10 per lb mol. (Ans.: V = 896)
(b) Suppose thatand
. What temperature (400 to 700
) would you recommend for a 400-
CSTR?
Additional information:
Feed: 22.5 SCF/s of pure A
Reaction conditions: 460, 3 atm pressure
Volumetric flow rate: 15/s at reaction donditions
Concentration of A in feed: 4.47 Xmol/