process flow diagrams (PFDs). In the case of HYSYS professional software simulation, these customizable modules
are called unit operation extensions (UOEs).
Arinelli et al. (2017) developed a steady-state MP unit for
simulation in HYSYS: MP-UOE. The model consists of a
lumped short-cut method that makes an analogy with shell
and tube heat exchangers, where the driving force of MP is
the log mean of species partial pressure differences in
membrane extremities. Overall mass balance and component
mass balance equations complete the permeation model.
MP-UOE component permeances were calibrated with real
data from offshore platforms with CAM decarbonating CO 2 -
rich NG, therefore, despite being a short-cut method, it
reproduces with good agreement real NG separation results.
On the other hand, permeances were adjusted as constant
average values, thus the independent of temperature and
CO 2 fugacity (the main permeating component), which is a
simplification of the real operation. After permeation calculations, the energy balance around MP module finishes
MP-UOE algorithm, considering a default value for the
difference between product temperatures. The extension
admits both HFM and SWM types, for countercurrent or
parallel flows. MP-UOE was used in a variety of CO 2 -rich
NG decarbonating studies of the authors, with different
processing scenarios and configurations (Araújo et al. 2017;
Arinelli et al. 2017, 2019).
In this section, MP-UOE is further developed with
improvements regarding the energy balance, which is now
defined locally for each stream inside MP, generating two
new model categories: (i) Lumped MP models for parallel
and counter-current permeate/retentate flows using average
driving forces and lumped balances (MPx-UOE); and
G60 with FLASH at 5 O C + MP with Permeate at P=7bar
Fig. 17 Process FGc20p7 for feed G60: results of HCDPA of G60 via flash (M2F + S2F) at T = 5 °C and permeation results of MP#1 battery
Membrane-Permeation Modeling for Carbon Capture …
161
are called unit operation extensions (UOEs).
Arinelli et al. (2017) developed a steady-state MP unit for
simulation in HYSYS: MP-UOE. The model consists of a
lumped short-cut method that makes an analogy with shell
and tube heat exchangers, where the driving force of MP is
the log mean of species partial pressure differences in
membrane extremities. Overall mass balance and component
mass balance equations complete the permeation model.
MP-UOE component permeances were calibrated with real
data from offshore platforms with CAM decarbonating CO 2 -
rich NG, therefore, despite being a short-cut method, it
reproduces with good agreement real NG separation results.
On the other hand, permeances were adjusted as constant
average values, thus the independent of temperature and
CO 2 fugacity (the main permeating component), which is a
simplification of the real operation. After permeation calculations, the energy balance around MP module finishes
MP-UOE algorithm, considering a default value for the
difference between product temperatures. The extension
admits both HFM and SWM types, for countercurrent or
parallel flows. MP-UOE was used in a variety of CO 2 -rich
NG decarbonating studies of the authors, with different
processing scenarios and configurations (Araújo et al. 2017;
Arinelli et al. 2017, 2019).
In this section, MP-UOE is further developed with
improvements regarding the energy balance, which is now
defined locally for each stream inside MP, generating two
new model categories: (i) Lumped MP models for parallel
and counter-current permeate/retentate flows using average
driving forces and lumped balances (MPx-UOE); and
G60 with FLASH at 5 O C + MP with Permeate at P=7bar
Fig. 17 Process FGc20p7 for feed G60: results of HCDPA of G60 via flash (M2F + S2F) at T = 5 °C and permeation results of MP#1 battery
Membrane-Permeation Modeling for Carbon Capture …
161