Page 360 - Elements of Chemical Reaction Engineering Ebook

Chap. 6 Questions and Problems 33 1

A. Without HCI:
CO: 20%, 02: 10% H,: 1%, N2: 69%
B. With HCl:
CO: 20%, 02: lo%, HI: 1%, NZ: 67%, HCI: 2%
The combustion takes place at 1000 K and 1 atm and the initial hydrogen rad-
ical mole fraction is Treat the flame as a batch reactor.
(a) Plot the mole fraction of each species and free radicals as a function of
time for both uninhibited and inhibited combustions.
(b) Repeat part (a) for different temperatures and pressures.
(S. Senkan, UCLA)
P6-22, The production of acetylene is describ.ed by R. W. Wansbaugh [Chem. Eng.,
92(16), 95 (1985)], Using the reaction and data in this article, develop a prob-
lem and solution.
16-23, The hydrogenation of benzene (B) is carried out in a CSTR sluny reactor
where the desired product is cyclohexene (C) [Chem. Eng. Sci., 51, 2873
( 1996)].

The rate laws for reactions (1) and (2) at 403 K are
K, = 0.0264 kPa-l

mol
k, = 2.7
h . kg . cat. . kPaO.5

K, = 0.04 kPa-l
kzKzPc,u,,Pn,
" ."
-rZc =
+ K2PC6HI0 mol
k, = 0.07 __
h . kg cat.. kPa
with
130 kPa < PHZ < 2 MPa
30 kPa < PC,H, < 450 MPa

The entering molar flow rate of benzene is 2 mol/s and it is necessary to
achieve at least 40% conversion of benzene at 403 K.
At what conditions should the reaction be carried out to maximize the
yield of cyclohexene?
P6-24, (Methanol synthesis) A new catalyst has been proposed for the synthesis of
methanol from carbon monoxide and hydrogen gas. This catalyst is reason-