List: Quizzes

Kinetics and Reactor Design
QUIZZES
CHE 304
Spring 2016
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OCbPDL
QUIZ 1: Calculate flow quantities
• (1)… For a PFR,
given v0= 10 liter/min,
CA0= 0.8 mol/liter
• Find (a) FA0 = ?
(mol/min)
• (b) if t = 5 min, how
much A has entered
the reactor ? (mol)
• (c) If CAf (final) = 0.08
mol/liter, what is XA?
PDG
QUIZ 2: Calculate flow quantities
• (1)… For a CSTR, given
FA0= 0.4 mol/s, XAf=
0.80
• Find (a) if v0 = 0.3 m^3/s,
what is CA0? (mol/m^3)
• (b) if t = 13 s, what is NA0
= ? (mol)
• (c) What is CAf (final) = at
XA= 0.80? (Note that
v(t)=v0 is constant!)
PDG
QUIZ 3:
For the same reaction as
Example 1.1 above
ODIPDG
• If CAf= 0.03 CA0, find the final volume of
the PFR reactor.
Homework #2.8 due April 14th (Thursday)! (Postponement!!!)
PDG
QUIZ :
Levenspiel Plot (Example 2.2)
• Use the kinetics data from example 2.2 to
construct a Levelspiel plot.
PDL
Kinetics Data:
The following is the measured kinetics data for the reaction
A
B
(from a chemistry lab).
QUIZ 2:
If the reaction is second order
• -rA = kCA2
• at same k (=0.23 (mol*dm3*min)-1, and v0
(=10 dm3/min)
• Find the volume Vf of the PRF when
• CA0=1.0 mol/L
• and CAf= 0.03 mol/L.
• FA0= CA0 *v0.
Quiz: Find parameters ε, δ, Θ
• For the ammonia reaction in PFR
•
A
B
C
•
N2 + 3 H2 
2 NH3
• FA0=3, FB0= 12,
FC0 =0 (in mol/min)
v&
•
•
•
•
At T0=750K,
= 100 Liters/min.
0
(Units CA0, CB0 = moles/liter. CA0= P0/(RT0))
Final Tf= 850K. X = 0.35.
Find Pf (bar), CAf, CBf, FAf, FBf and ε, δ, Θ.
•
(R= 0.08314 bar-Liter/(K.mol) )
QUIZ: find δ for each reaction
4: EG 4.2,PEC
For Example 4.2 <163>: CSTR producing Eth-Glycol
Example 4.2
p.163
QUIZ
• PEP
QUIZ:
<484>PEQ
• Example 8-2 Heat of Reaction
• Calculate the heat of reaction for the
synthesis of ammonia from hydrogen +
nitrogen at 250oC in kcal/mol of N2 reacted
and also in kJ/mol of H2 reacted.
• Calculate the heat of reaction at the
reference temperature TR using the heats of
formation of the reacting species obtained
from Perry's Handbook or the Handbook of
Chemistry and Physics.
Q:
If the heat capacities are constant:
Q:
• ∆HRX(T=250oC) = ∆HRX(TR)+ ∆Cp*(T-TR)
QUIZ
• PEP
QUIZ:
<484>PEQ
• Example 8-2 Heat of Reaction
• Calculate the heat of reaction for the
synthesis of ammonia from hydrogen +
nitrogen at 250oC in kcal/mol of N2 reacted
and also in kJ/mol of H2 reacted.
• Calculate the heat of reaction at the
reference temperature TR using the heats of
formation of the reacting species obtained
from Perry's Handbook or the Handbook of
Chemistry and Physics.
Q:
If the heat capacities are constant:
Q:
• ∆HRX(T=250oC) = ∆HRX(TR)+ ∆Cp*(T-TR)
QUIZ
• PEQ
QUIZ: Use example 8.3 data to calculate
the Levenspiel plot “FA0/(-rA)” value at X= 0.4
FA0 = (0.9)(163 kmol/h)
CA0 = 9.3 mol/liter
QUIZ
• PEQ
QUIZ: Use example 8.3 data to calculate
the Levenspiel plot “FA0/(-rA)” value at X= 0.4
FA0 = (0.9)(163 kmol/h)
CA0 = 9.3 mol/liter
Answers to
Homework
4
Homework 4.6
Answer to Homework 4.6
Homework 4.7
Use Polymath: PFR
CSTR
Polymath:4.7 (a) Report
Polymath: 4.7 (a) ODE