ELEMENTS OF CHEM. REACTION ENGR
5th Edition
ISBN: 9780135486498
Author: Fogler
Publisher: INTER PEAR
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Chapter 2, Problem 2.5P
Interpretation Introduction
Interpretation:
The reactor that can be selected to perform the given reaction is to be stated. The procedure to arrange the selected reactor is to be stated. The highest conversion that is obtained for
Concept introduction:
The full form of CSTR is Continuous-Stirred Tank Reactor. This reactor has its application in the industrial processes. This reactor actually used for liquid-phase reactions.
The conversion, X can be defined as the moles of any species A that are reacted per mole of A fed in the reactor.
The equation in which number of moles of reactant and product are same or balanced is known as mole balanced equation.
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Example A continuous fractionating column is to be design to separate 30 Ib/h of a mixture of 40 percent benzene and 60 percent toluene into an overhead product containing 97 percent benzene and a bottom product containing 98 percent toluene. These percentages are by weight. A reflux ratio of 3.5 mol to 1 mol of product is to be used. The molal latent heats of benzene and toluene are 7,360 and 7,960 cal/mol, respectively. Benzene and toluene form an ideal system with a relative volatility of about 2.5; the equilibrium curve is shown in Figure below. The feed has a boiling point of 95 °C at a pressure of 1 atm.
(a) Calculate the moles of overhead product and bottom product per hour.
(b) Determine the number of ideal plate and the position of the feed plate:
(i) if the feed is liquid and at its boiling point.
(ii)if the feed is liquid and at 20 °C (specific heat 0.44 cal/ g.°C) (iii) if the feed is a mixture of two-thirds vapor and one-third liquid.
(c) If steam at 20 Ib/in? (1.36 atm)…
Hydrogen, important for numerous processes, can be produced by the shift reaction:
CO+H2O-CO2 +H2
In the reactor system shown in the Figure, the conditions of conversion have been adjusted so
that the H2 content of the effluent from the reactor is 3 mol %. Based on the data in following
figure:
a. Calculate the composition of the fresh feed.
b. Calculate the moles of recycle per mole of hydrogen produced.
Recycle
CO, H2O
Feed
CO
H₂O
Reactor
%
3 mol %
H₂
Separator
%
CO₂ 48
H₂ 48
CO 4
Chapter 2 Solutions
ELEMENTS OF CHEM. REACTION ENGR
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