dynamic response to process disturbances an analysis of ... · direction. simulated moving bed...
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22/05/2019 1
Dynamic response to process disturbances – An analysis of True Moving Bed Reactor model in transient regime
Vinicius Viena Santana
Universidade Federal da Bahia
Meet the authors
22/05/2019 2
Vinicius Viena
Dr. Idelfonso Nogueira
Universidade Federal da Bahia
LSRE- University of Porto
Dr. José Miguel Loureiro
LSRE- University of Porto
Dr. Ana Mafalda Ribeiro
LSRE - University of Porto
Dr. Márcio Martins PEI
Universidade Federal da Bahia
Overview
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Countercurrent
Chromatographic
Separation
Process Dynamics
Our work
Multifunctional
Reactors
Simulated Moving Bed Reactor (SMBR) Concept
Catalytic
Reactions
Simulated
Moving Bed
Simulated Moving Bed Reactor
A + B C + D
Sectio
n
3
Section
2
Section
4
Sectio
n
1
A + B (Feed)
Desorbent
C (Extract)
D (Raffinate)
Port
switch
and flow
direction
Simulated Moving Bed Reactor (SMBR) Concept
Catalytic
Reactions
Simulated
Moving Bed
Simulated Moving Bed Reactor
A + B C + D
Sectio
n
3
Section
2
Section
4
Sectio
n
1
A + B (Feed)
Desorbent
C (Extract)
D (Raffinate)
Port
switch
and flow
direction
True Moving Bed Reactor Model (TMBR) Concept
Catalytic
Reactions
True
Moving Bed
Model
True Moving Bed Reactor Model
SSection I Section II Section III Section IV
A + B
C + A D + A
A (Desorbent)
A + B C + D
(Feed)
(Extract)
(Rafinate)
Motivation and objectives
your date here 7
Why?
SMBR inherent
complexity
Multifunctional
reactors potential
Motivation and objectives
your date here 8
Why?
SMBR inherent
complexity
Multifunctional
reactors potential
Assess the effect of
operational variables
in dynamic response
of performance
indicators for a SMBR
using the True
Moving Bed Reactor
(TMBR) Model
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Methodology
Case Study
Synthesis of n-
Propyl-Propionate
in a TMBR unit
proposed in
(Nogueira et al.,
2018)
Performance indicators
Desorbent
consumption Productivity &
Purities & Conversion
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Methodology
Proposed analysis flowsheet
Vary operational
variables one at a
time
Simulate TMBR
transiente model in
gPROMS
Send performance
indicators results to
Matlab
Apply Gram- Schmidt
orthgonalization
algorithm
Rank operating
variables in order of
magnitude
Simulate TMBR
model with design
conditions
Part 1 Part 2
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28
22/05/2019 11
Results and Discussion
Analysis results
Feed limiting reactant concentration 1
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28
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Results and Discussion
Analysis results
SSection I
Section II Section
III Section
IV
A + B
C + A D + A
A (Desorbent)
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28
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Results and Discussion
Analysis results
Switch time 2
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28
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Results and Discussion
Analysis results
Switch time = Section Length/ Solid velocity SSection
I
L
Vs
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Results and Discussion
Analysis results
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28 Feed excess reactant concentration 3
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Results and Discussion
Analysis results
Operating Variables
Iteration CFPOH CF
AcPro QD QF QX QIV Ts
1 1,71E+02 5,70E+05 1,04E+00 2,07E-04 1,76E-02 4,53E-06 6,84E+02
2 1,68E+02 4,81E-26 8,09E-01 4,79E-06 1,17E-02 3,39E-06 6,68E+02
3 1,51E+02 3,83E-26 7,59E-01 4,75E-06 1,11E-02 3,09E-06 2,51E-28
4 8,45E-29 3,83E-26 6,22E-01 3,62E-06 9,32E-03 2,77E-06 1,32E-28
5 2,09E-29 3,83E-26 2,66E-30 5,26E-07 2,71E-04 6,54E-08 1,31E-28
6 2,09E-29 3,83E-26 1,19E-31 4,38E-07 8,99E-35 3,51E-08 1,31E-28
7 2,09E-29 3,83E-26 1,19E-31 9,11E-38 3,35E-35 2,80E-08 1,31E-28 SSection
I Section II
Section III
Section IV
A + B
C + A D + A
A (Desorbent)
17
Conclusions
The results from orthogonalization is
consistente with system
phenomenology and with previous
results
The results can be used in future works
in the field of control and optimization
22/05/2019 18
Thank you for your
attention!