0
Research Papers: Fuel Combustion

An Eulerian Approach to Computational Fluid Dynamics Simulation of a Chemical-Looping Combustion Reactor With Chemical Reactions

[+] Author and Article Information
Subhodeep Banerjee

Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: sb13@wustl.edu

Ramesh K. Agarwal

Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: rka@wustl.edu

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received July 20, 2015; final manuscript received October 19, 2015; published online December 15, 2015. Assoc. Editor: Terry Wall.

J. Energy Resour. Technol 138(4), 042201 (Dec 15, 2015) (9 pages) Paper No: JERT-15-1266; doi: 10.1115/1.4031968 History: Received July 20, 2015; Revised October 19, 2015

Chemical-looping combustion (CLC) is a next-generation combustion technology that shows great promise in addressing the need for high-efficiency low-cost carbon capture from fossil fueled power plants. Although there have been a number of experimental studies on CLC in recent years, computational fluid dynamics (CFD) simulations have been limited in the literature. In this paper, simulation of a CLC reactor is conducted using the Eulerian approach in the commercial CFD solver ansys fluent based on a laboratory-scale experiment with a dual fluidized bed CLC reactor. The solid phase consists of a Fe-based oxygen carrier while the gaseous fuel used is syngas. The salient features of the fluidization behavior in the air reactor and fuel reactor beds representing a riser and a bubbling bed, respectively, as well as the down-comer, are accurately captured in the simulation. This work is among the few CFD simulations of a complete circulating dual fluidized bed system for CLC in 3D in the literature. It highlights the importance of 3D simulation of CLC systems and the need for more accurate empirical reaction rate data for future CLC simulations.

FIGURES IN THIS ARTICLE
<>
Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Arrhenius, S. , 1896, “ On the Influence of Carbonic Acid in the Air Upon the Temperature of the Ground,” Philos. Mag., 41(251), pp. 237–277. [CrossRef]
IPCC, 2007, “Climate Change 2007: Synthesis Report. Contribution of Working Groups I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, Pachauri, R. K., and Reisinger, A. (eds.)],” IPCC, Geneva, Switzerland, pp. 104.
Hong, J. , Chaudhry, G. , Brisson, J. G. , Field, R. , Gazzino, M. , and Ghoniem, A. F. , 2009, “ Analysis of Oxy-Fuel Combustion Power Cycle Utilizing a Pressurized Coal Combustor,” Energy, 34(9), pp. 1332–1340. [CrossRef]
Hong, J. , Chaudhry, G. , Brisson, J. G. , Field, R. , Gazzino, M. , and Ghoniem, A. F. , 2009, “ Performance of the Pressurized Oxy Fuel Combustion Power Cycle With Increasing Operating Pressure,” 34th International Technical Conference on Clean Coal and Fuel Systems, Clearwater, FL, May 31-June 4.
Kruggel-Emden, H. , Stepanek, F. , and Munjiza, A. , 2011, “ A Study on the Role of Reaction Modeling in Multi-Phase CFD-Based Simulations of Chemical Looping Combustion,” Oil Gas Sci. Technol., 66(2), pp. 313–331. [CrossRef]
Lyngfelt, A. , Leckner, B. , and Mattisson, T. , 2001, “ A Fluidized-Bed Combustion Process With Inherent CO2 Separation: Application of Chemical-Looping Combustion,” Chem. Eng. Sci., 56(10), pp. 3101–3113. [CrossRef]
Ishida, M. , Zheng, D. , and Akehata, T. , 1987, “ Evaluation of a Chemical-Looping-Combustion Power-Generation System by Graphic Exergy Analysis,” Energy, 12(2), pp. 147–154. [CrossRef]
Ishida, M. , Jin, H. , and Okamoto, T. , 1996, “ A Fundamental Study of a New Kind of Medium Material for Chemical-Looping Combustion,” Energy Fuels, 10(4), pp. 958–963. [CrossRef]
Wolf, J. , Anheden, M. , and Yan, J. , 2001, “ Performance Analysis of Combined Cycles With Chemical Looping Combustion for CO2 Capture,” 18th International Pittsburgh Coal Conference, Newcastle, Australia, Dec 3–7.
Marion, J. L. , 2006, “ Technology Options for Controlling CO2 Emissions From Fossil Fueled Power Plants,” 5th Annual Conference on Carbon Capture and Sequestration, Alexandria, VA, May 8–11.
Andrus, H. E. , Burns, G. , Chiu, J. H. , Liljedahl, G. N. , Stromberg, P. T. , and Thibeault, P. R. , 2008, “ Hybrid Combustion–Gasification Chemical Looping Coal Power Technology Development, Phase III—Final Report,” ALSTOM Power Inc., Windsor, CT, Report No. PPL-08-CT-25.
Stevens, R. , Newby, R. , Shah, V. , Kuehn, N. , and Keairns, D. , 2010, “ Guidance for NETL's Oxy-Combustion R&D Program: Chemical Looping Combustion Reference Plant Designs and Sensitivity Studies,” U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, Report No. DOE/NETL-2010/1643.
Mattisson, T. , and Lyngfelt, A. , 2001, “ Capture of CO2 Using Chemical-Looping Combustion,” 1st Biennial Meeting of the Scandinavian-Nordic Section of the Combustion Institute, Göteborg, Sweden, Apr. 18–20, pp. 163–168.
Kronberger, B. , Lôffler, G. , and Hofbauer, H. , 2005, “ Simulation of Mass and Energy Balances of a Chemical-Looping Combustion System,” Clean Air: Int. J. Energy Clean Environ., 6(1), pp. 1–14. [CrossRef]
Jerndal, E. , Mattisson, T. , and Lyngfelt, A. , 2006, “ Thermal Analysis of Chemical-Looping Combustion,” Chem. Eng. Res. Des., 84(9), pp. 795–806. [CrossRef]
Zhang, X. , Banerjee, S. , and Agarwal, R. K. , 2015, “ Validation of Chemical-Looping With Oxygen Uncoupling (CLOU) Using Cu-Based Oxygen Carrier and Comparative Study of Cu, Mn and Co Based Oxygen Carriers Using ASPEN Plus,” Int. J. Energy. Environ., 6(3), pp. 247–254.
Banerjee, S. , and Agarwal, R. K. , 2015, “ Transient Reacting Flow Simulation of Spouted Fluidized Bed for Coal-Direct Chemical Looping Combustion,” ASME J. Therm. Sci. Eng. Appl., 7(2), p. 021016. [CrossRef]
Hossain, M. M. , and de Lasa, H. I. , 2008, “ Chemical-Looping Combustion (CLC) for Inherent CO2 Separations—A Review,” Chem. Eng. Sci., 63(18), pp. 4433–4451. [CrossRef]
Johansson, M. , 2007, “ Screening of Oxygen-Carrier Particles Based on Iron-, Manganese-, Copper- and Nickel Oxides for Use in Chemical-Looping Technologies,” Ph.D. dissertation, Chalmers University of Technology, Göteborg, Sweden.
Abad, A. , Mattisson, T. , Lyngfelt, A. , and Johansson, M. , 2007, “ The Use of Iron Oxide as Oxygen Carrier in a Chemical-Looping Reactor,” Fuel, 86(7–8), pp. 1021–1035. [CrossRef]
Jung, J. , and Gawmo, I. , 2008, “ Multiphase CFD-Based Models for Chemical Looping Combustion Process: Fuel Reactor Modeling,” Powder Technol., 183(3), pp. 401–409. [CrossRef]
Deng, Z. , Xiao, R. , Jin, B. S. , Song, Q. L. , and Huang, H. , 2008, “ Multiphase CFD Modeling for a Chemical Looping Combustion Process (Fuel Reactor),” Chem. Eng. Technol., 31(12), pp. 1754–1766. [CrossRef]
Mahalatkar, K. , Kuhlman, J. , Huckaby, E. D. , and O'Brien, T. , 2011, “ Computational Fluid Dynamic Simulations of Chemical Looping Fuel Reactors Utilizing Gaseous Fuels,” Chem. Eng. Sci., 66(3), pp. 469–479. [CrossRef]
Mahalatkar, K. , Kuhlman, J. , Huckaby, E. D. , and O'Brien, T. , 2011, “ CFD Simulation of a Chemical-Looping Fuel Reactor Utilizing Solid Fuel,” Chem. Eng. Sci., 66(16), pp. 3617–3627. [CrossRef]
Shuai, W. , Guodong, L. , Huilin, L. , Juhui, C. , Yurong, H. , and Jiaxing, W. , 2011, “ Fluid Dynamic Simulation in a Chemical Looping Combustion With Two Interconnected Fluidized Beds,” Fuel Proc. Technol., 92(3), pp. 385–393. [CrossRef]
Seo, M. , Nguyen, T. D. B. , Lim, Y. , Kim, S. , Park, S. , Song, B. , and Kim, Y. , 2011, “ Solid Circulation and Loop-Seal Characteristics of a Dual Circulating Fluidized Bed: Experiments and CFD Simulation,” Chem. Eng. J., 2, pp. 803–811. [CrossRef]
Nguyen, T. D. B. , Seo, M. , Lim, Y. , Song, B. , and Kim, S. , 2012, “ CFD Simulation With Experiments in a Dual Circulating Fluidized Bed Gasifier,” Comput. Chem. Eng., 36, pp. 48–56. [CrossRef]
Ahmed, B. , and Lu, H. , 2014, “ Modeling of Chemical Looping Combustion of Methane Using a Ni-Based Oxygen Carrier,” Energy Fuel, 28, pp. 3420–3429. [CrossRef]
Guan, Y. , Chang, J. , Zhang, K. , Wang, B. , and Sun, Q. , 2014, “ Three-Dimensional CFD Simulation of Hydrodynamics in an Interconnected Fluidized Bed for Chemical Looping Combustion,” Powder Technol., 268, pp. 316–328. [CrossRef]
Parker, J. , 2014, “ CFD Model for the Simulation of Chemical Looping Combustion,” Powder Technol., 265, pp. 47–53. [CrossRef]
Chong, Y. O. , Nicklin, D. J. , and Tait, P. J. , 1986, “ Solid Exchange Between Adjacent Fluid Beds Without Gas Mixing,” Powder Technol. 47(2), pp. 151–156. [CrossRef]
Fang, M. , et al. ., 2003, “ Experimental Research on Solid Circulation in a Twin Fluidized Bed System,” Chem. Eng. J., 94(3), pp. 171–178. [CrossRef]
ANSYS, 2012, ANSYS FLUENT User's Guide, ANSYS, Inc., Canonsburg, PA.
ANSYS, 2012, ANSYS FLUENT Theory Guide, ANSYS, Inc., Canonsburg, PA.
Patil, D. J. , Annaland, M. V. , and Kuipers, J. A. M. , 2004, “ Critical Comparison of Hydrodynamic Models for Gas–Solid Fluidized Beds—Part I: Bubbling Gas–Solid Fluidized Beds Operated With a Jet,” Chem. Eng. Sci., 60(1), pp. 57–72. [CrossRef]
Patil, D. J. , Annaland, M. V. , and Kuipers, J. A. M. , 2004, “ Critical Comparison of Hydrodynamic Models for Gas–Solid Fluidized Beds—Part II: Freely Bubbling Gas–Solid Fluidized Beds,” Chem. Eng. Sci., 60(1), pp. 73–84. [CrossRef]
Lun, C. K. K. , Savage, S. B. , Jeffrey, D. J. , and Chepurniy, N. , 1984, “ Kinetic Theories for Granular Flow: Inelastic Particles in Couette Flow and Slightly Inelastic Particles in General Flow Field,” J. Fluid Mech., 140, pp. 223–256. [CrossRef]
Gidaspow, D. , 1992, Multiphase Flow and Fluidization, Academic Press, San Diego, CA.
Ergun, S. , 1952, “ Fluid Flow Through Packed Columns,” Chem. Eng. Prog., 48, pp. 89–94.
Wen, C. Y. , and Yu, H. Y. , 1966, “ Mechanics of Fluidization,” Chem. Eng. Prog. Symp. Ser., 62, pp. 100–111.
Gunn, D. J. , 1978, “ Transfer of Heat or Mass to Particles in Fixed and Fluidized Beds,” Int. J. Heat Mass Transfer, 21(4), pp. 467–476. [CrossRef]
Mattisson, T. , et al. ., 2005, “ Capture of CO2 in Coal Combustion. ECSC Coal RTD Programme Final Report,” Chalmers University of Technology, Göteborg, Sweden, Report No. ECSC-7220-PR125.
Taylor, G. I. , 1954, “ The Dispersion of Matter in Turbulent Flow Through Pipes,” Proc. R. Soc. London, Ser. A, 223(1155), pp. 446–448. [CrossRef]

Figures

Grahic Jump Location
Fig. 1

Schematic representation of a CLC system with (a) interconnected fluidized beds and (b) packed bed with alternating flow [5]

Grahic Jump Location
Fig. 2

Sketch of experimental reactor: (1) air reactor, (2) down-comer, (3) fuel reactor, (4) slot, (5) gas distributor plate, (6) wind box, (7) reactor part, (8) particle separator, and (9) leaning wall. The symbols (x) and (o) indicate fluidization in the down-comer and slot. (a) The lower part—front view, (b) entire reactor—front view, and (c) entire reactor—side view.

Grahic Jump Location
Fig. 3

Computational domain and grid for 2D CFD simulation with detailed view of lower bed

Grahic Jump Location
Fig. 4

Contours of solid volume fraction for the first second of 2D simulation showing the initial development of solids flow inside the dual fluidized bed reactor system. The maximum value of 0.63 represents the solids packing limit volume fraction.

Grahic Jump Location
Fig. 5

Static pressure loop inside the dual fluidized bed reactor after 1 s of 2D simulation showing the pressure drops and gravity-driven flows inside the system (AR = air reactor and FR = fuel reactor)

Grahic Jump Location
Fig. 6

Contours of CO2 mass fraction for the first 5 s of 2D simulation showing the vortex pattern seen during the initial development of gas flow inside the fuel reactor

Grahic Jump Location
Fig. 7

Mass fractions of CO2 and H2O at the fuel reactor outlet for the 2D simulation showing fluctuations caused by the vortex pattern seen in Fig. 6 during initial development of flow

Grahic Jump Location
Fig. 8

Stable plume of reversed flow in fuel reactor after 10 s of simulation

Grahic Jump Location
Fig. 9

Computational domain (L) and grid (R) for 3D CFD simulation

Grahic Jump Location
Fig. 10

Contours of CO2 mass fraction for the first 10 s of 3D simulation showing the increased diffusion and absence of the vortex pattern compared to the 2D case

Grahic Jump Location
Fig. 11

Mass fractions of CO2 and H2O at the fuel reactor outlet for the 3D simulation

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In