Kinetic model and Simulation Analysis for Propane Dehydrogenation in an Industrial Moving Bed Reactor
A kinetic model for propane dehydrogenation in an
industrial moving bed reactor is developed based on the reported
reaction scheme. The kinetic parameters and activity constant are
fine tuned with several sets of balanced plant data. Plant data at
different operating conditions is applied to validate the model and
the results show a good agreement between the model
predictions and plant observations in terms of the amount of main
product, propylene produced. The simulation analysis of key
variables such as inlet temperature of each reactor (Tinrx) and
hydrogen to total hydrocarbon ratio (H2/THC) affecting process
performance is performed to identify the operating condition to
maximize the production of propylene. Within the range of operating
conditions applied in the present studies, the operating condition to
maximize the propylene production at the same weighted average
inlet temperature (WAIT) is ΔTinrx1= -2, ΔTinrx2= +1, ΔTinrx3= +1 ,
ΔTinrx4= +2 and ΔH2/THC= -0.02. Under this condition, the surplus
propylene produced is 7.07 tons/day as compared with base case.
[1] D. Sanfilippo, and I. Miracca, Dehydrogenation of Paraffins: Synergies
between CatalystbDesign and Reactor Engineering, Catalysis Today,
111, 2006, 133-139.
[2] H. F. Rase, Handbook of Commercial Catalysts: Heterogeneous
Catalysts. CRC Press, New York, 2000.
[3] L. C. Loc, N. A. Gaidai, S. L. Kiperman and H. S. Thoang, Kinetics of
propane and n-butane Dehydrogenation over Platinum-Alumina
Catalysts in the presence of Hydrogen and Water Vapor. Kinetics and
Catalysis, 37(6), 1996, 851-857.
[4] A. Rosjorde, S. Kjelstrupa, E. Johannessena, R. Hansenb, Minimizing
the Entropy Production in a Chemical Process for Dehydrogenation of
Propane, Energy, 32, 2007, 335-343.
[5] M. P. Lobera, C. Tellez, J. Herguido and M. Menendez, Transient
Kinetic Modelling of Propane Dehydrogenation over a Pt-Sn-K/Al2O3
Catalyst, Applied Catalysis A: General, 349, 2008, 156-164.
[6] M. P. Lobera, C. Tellez, J. Herguido and M. Menendez, Propane
Dehydrogenation over Pt Sn K/╬│-Al2O3 Catalyst in a Two-Zon
Fluidized Bed Reactor, Ind. Eng. Chem. Res. 47, 2008, 9314-9320.
[7] M.M. Bhasin, J.H. McCain, B.V. Vora, T. Imai and P.R. Pujado,
Dehydrogenation and Oxydehydrogenation of Paraffins to Olefins,
Applied Catalysis A: General, 221, 2001, 397-419.
[8] P. Pujado and B. Vora, 1990. Hydr. Proc., 65, 1990.
[9] http://www.uop.com/gasprocessing/TechSheets/Oleflex.pdf.
[10] F. Cavani, and F. Trifiro, 1994. Skillful Matching of Chemistry and
Engineering in Catalytic Dehydration of Low-Molecular-Weight
Alkanes, La Chimica & L-Industria, 76, 1994.
[1] D. Sanfilippo, and I. Miracca, Dehydrogenation of Paraffins: Synergies
between CatalystbDesign and Reactor Engineering, Catalysis Today,
111, 2006, 133-139.
[2] H. F. Rase, Handbook of Commercial Catalysts: Heterogeneous
Catalysts. CRC Press, New York, 2000.
[3] L. C. Loc, N. A. Gaidai, S. L. Kiperman and H. S. Thoang, Kinetics of
propane and n-butane Dehydrogenation over Platinum-Alumina
Catalysts in the presence of Hydrogen and Water Vapor. Kinetics and
Catalysis, 37(6), 1996, 851-857.
[4] A. Rosjorde, S. Kjelstrupa, E. Johannessena, R. Hansenb, Minimizing
the Entropy Production in a Chemical Process for Dehydrogenation of
Propane, Energy, 32, 2007, 335-343.
[5] M. P. Lobera, C. Tellez, J. Herguido and M. Menendez, Transient
Kinetic Modelling of Propane Dehydrogenation over a Pt-Sn-K/Al2O3
Catalyst, Applied Catalysis A: General, 349, 2008, 156-164.
[6] M. P. Lobera, C. Tellez, J. Herguido and M. Menendez, Propane
Dehydrogenation over Pt Sn K/╬│-Al2O3 Catalyst in a Two-Zon
Fluidized Bed Reactor, Ind. Eng. Chem. Res. 47, 2008, 9314-9320.
[7] M.M. Bhasin, J.H. McCain, B.V. Vora, T. Imai and P.R. Pujado,
Dehydrogenation and Oxydehydrogenation of Paraffins to Olefins,
Applied Catalysis A: General, 221, 2001, 397-419.
[8] P. Pujado and B. Vora, 1990. Hydr. Proc., 65, 1990.
[9] http://www.uop.com/gasprocessing/TechSheets/Oleflex.pdf.
[10] F. Cavani, and F. Trifiro, 1994. Skillful Matching of Chemistry and
Engineering in Catalytic Dehydration of Low-Molecular-Weight
Alkanes, La Chimica & L-Industria, 76, 1994.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:52937", author = "Chin S. Y. and Radzi and S. N. R. and Maharon and I. H. and Shafawi and M. A.", title = "Kinetic model and Simulation Analysis for Propane Dehydrogenation in an Industrial Moving Bed Reactor", abstract = "A kinetic model for propane dehydrogenation in an
industrial moving bed reactor is developed based on the reported
reaction scheme. The kinetic parameters and activity constant are
fine tuned with several sets of balanced plant data. Plant data at
different operating conditions is applied to validate the model and
the results show a good agreement between the model
predictions and plant observations in terms of the amount of main
product, propylene produced. The simulation analysis of key
variables such as inlet temperature of each reactor (Tinrx) and
hydrogen to total hydrocarbon ratio (H2/THC) affecting process
performance is performed to identify the operating condition to
maximize the production of propylene. Within the range of operating
conditions applied in the present studies, the operating condition to
maximize the propylene production at the same weighted average
inlet temperature (WAIT) is ΔTinrx1= -2, ΔTinrx2= +1, ΔTinrx3= +1 ,
ΔTinrx4= +2 and ΔH2/THC= -0.02. Under this condition, the surplus
propylene produced is 7.07 tons/day as compared with base case.", keywords = "kinetic model, dehydrogenation, simulation,modeling, propane", volume = "5", number = "4", pages = "287-7", }