A fresh feed of butanol (B, C, H, OH), oxygen (O2), and nitrogen (N2) is mixed with a recycle stream and fed to a reactor overseen by Romana and Boswell. The flow rate of the fresh feed is 456 mol/hr with
mole fractions of 0.057 for butanol, 0.539 for oxygen, and the balance nitrogen. The reactor effluent
contains butanol, oxygen, nitrogen, CO2, NOx, and water (W, H20), which is fed to a separator. A gas
stream containing oxygen, nitrogen, CO2, NO2, and some of the water exits the separator, and a
butanol/water stream also exits the separator. Ninety-five times more water exits the separator in the
gas stream than exits the overall system in the purge stream. The overall conversion of butanol is 78%,
and the single pass conversion of butanol is 55%. The component flow rates of oxygen and nitrogen
leaving the separator are 65,8 mol/hr and 155 mol/hr, respectively,
In the last level, the overall system was solved. Component molar flow rates were found in units of
mol/hr as ň4,co, - 81.1. NA, NO, = 58.4, ņa, w = 100.3, no, B = 5.72, and now = 1.056,
Now, find the component molar flow rate (mol/hr) of the feed to the reactor
02,N2
NB
Ex: 29.2
02,02 =
EX 194
n2,w =
Ex: 1.50
mol/h
mol/hr
Ex: 146
mol/hr
mol/hr