(693e) Single Column VSA Studies for CO2 Recovery Using Metal Organic Frame Work Adsorbent: Comparison with Commercial Zeolite | AIChE

(693e) Single Column VSA Studies for CO2 Recovery Using Metal Organic Frame Work Adsorbent: Comparison with Commercial Zeolite

Authors 

Nanoti, A. - Presenter, Indian Institute of Petroleum
Arya, A., Indian Institute of Petroleum
Dasgupta, S., Indian Institute of Petroleum
Divekar, S., Indian Institute of Petroleum
Goswami, A., Indian Institute of Petroleum
Garg, M., Indian Institute of Petroleum
Andersen, A., SINTEF Materials and Chemistry
Cavka, J., SINTEF Materials and Chemistry
Blom, R., SINTEF industry


Single Column VSA
Studies for CO2 Recovery using Metal Organic Frame Work Adsorbent: Comparison
with Commercial Zeolite

 

Aarti
Arya, Soumen Dasgupta, Swapnil Divekar, Anshu Nanoti*, Amar N. Goswami and
Madhukar O. Garg

Indian Institute of
Petroleum, Dehradun-248005, India.

Anne
Andersen, Jasmina Hafizovic Cavka & Richard Blom

SINTEF
Materials & Chemistry, P.O.Box 124 Blindern, 0314 Oslo, Norway

Rising
levels of CO2 in the atmosphere due to burning of fossil fuel have
been recognized to be the main contributor of global warming and associated
climate change phenomenon.  Fossil fuel combustion for power generation is the
major source of increased CO2 levels in the atmosphere, but
capturing CO2 from flue gas emissions in power plants where it is
available as a low pressure stream, presents a formidable challenge. Current
technologies available such as amine based absorption processes are considered
uneconomic and there is a concerted effort being made to improve such processes
or develop more efficient alternative processes. In this context adsorption
processes using Pressure or Vacuum Swing Adsorption (PSA/VSA) are attracting
interest as energy requirements are lower [1].

Solid
adsorbents like zeolites and activated carbons can be used to recover CO2
from flue gas mixtures by pressure swing adsorption technique.Several adsorbent
materials have been investigated for CO2 recovery by PSA/VSA. The
general consensus appears to be that Zeolite 13X materials performs better than
activated carbons or silica gels [2][3]. Both capacities and selectivities for
separation of CO2/N2 mixtures (representative of flue
gases from power plants) are superior. However, as CO2 isotherms on
zeolites are nonlinear, power requirement during regeneration can be high and
there is for this reason a large scope for developing new adsorbents which will
show better selectivity and regenerability.

Metal
Organic Frameworks (MOF) is a new class of adsorbents   attracting interest for
selective CO2 separation [4][5]. These are materials in which metal
ions or clusters are connected via organic linkers to form highly porous
network structures. Several MOF's have been proposed as adsorbents for CO2
recovery. These include  MOF-47  [Vanadium (IV) benzene 1,4 dicarboxylate ],
MIL-53 [Chromium (III) benzene 1,4 dicarboxylate]  and CuBTC [ Copper(II)
benzene 1,3,5 tri carboxylate]. However, the several studies that have been
reported so far on CO2 adsorption on MOF's have been limited mostly
to equilibrium isotherm and diffusion measurements with pure components [6,7,8,9].
The present paper  reports an experimental study on the separation of CO2
from mixtures with nitrogen using UIO-66 (Zr6O4(OH)4(1,4-dicarboxybenzene))MOF
adsorbent [10], in a vacuum swing adsorber operating with a heavy reflux or
rinse cycle typically used for recovery of the strong adsorptive (in this case,
CO2) from gas mixtures. UIO-66 is an in-house synthesised MOF that can
be formulated easily in suitable forms for column operation. The results are
compared with performance data generated with commercialZeolite 13X under
comparable operating conditions. The study shows that UIO-66 performs
satisfactorily in long term column operation and there was no performance
deterioration noted. CO2 recoveries are higher than observed with
the zeolite while CO2 purities are lower.

*Corresponding
author

References:

[1]Ho,M.T.,Allinson, G.W., Wiley,
D.E., 2008.Reducing the cost of CO2 capture from flue gases using
pressure swing adsorption.Ind.Eng.Chem. Res. 47, 4883-4890.

[2]Li,G., Xiao,P., Webley,
P.,Zhang, J.,Singh, R., Marshall, M., 2008. Capture of CO2 from flue
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[3]Chue,K.T., Kim,J.N., Yoo,
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[4]Rowsell, J.L.C.,Yaghi,
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[5]Couck, S., Denayer,
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[6] Choudhary, P.,
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[7]Cavenati,S.,
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[8] Liang,Z.,
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[9] Hamon, L.,
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[10] Jasmina
Hafizovic Cavka, SørenJakobsen, Unni Olsbye, Nathalie Guillou, Carlo Lamberti,
Silvia Bordiga and Karl Petter Lillerud, A New Zirconium Inorganic Building Brick Forming Metal
Organic Frameworks with Exceptional Stability
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[11]Krishna,
R., Long, J.R, 2011. Screening metal-organic frameworks by analysis of
transient breakthrough of gas mixtures in a fixed bed adsorber.J.Phys. Chem. C.
115, 12941-12950.

 

 

 

 

 

 

 

 

 

 

 

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