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Research Papers: Energy From Biomass

Effect of Heat Flux Distribution Profile on Hydrogen Concentration in an Allothermal Downdraft Biomass Gasification Process: Modeling Study

[+] Author and Article Information
Yuhan A. Lenis

Department of Mechanical Engineering,
Universidad del Norte,
km 5 vía Puerto Colombia,
Barranquilla 081007, Colombia;
Department of Mechanical Engineering,
Institución Universitaria Pascual Bravo,
Calle 73 No. 73A-226,
Medellín 050034, Colombia
e-mails: ylenis@uninorte.edu.co;
yuhan.lenis@pascualbravo.edu.co

Gilles Maag

Department of Biosystems Engineering,
Faculty of Animal Science and
Food Engineering,
University of São Paulo (USP),
Avenida Duque de Caxias Norte 225,
Pirassununga, São Paulo 13635-900, Brazil
e-mail: gmaag@usp.br

Celso Eduardo Lins de Oliveira

Department of Biosystems Engineering,
Faculty of Animal Science and
Food Engineering,
University of São Paulo (USP),
Avenida Duque de Caxias Norte 225,
Pirassununga, São Paulo 13635-900, Brazil
e-mail: celsooli@usp.br

Lesme Corredor

Department of Mechanical Engineering,
Universidad del Norte,
Km 5 vía Puerto Colombia,
Barranquilla 081007, Colombia
e-mail: lcorredo@uninorte.edu.co

Marco Sanjuan

Department of Mechanical Engineering,
Universidad del Norte,
Km 5 vía Puerto Colombia,
Barranquilla 081007, Colombia
e-mail: msanjuan@uninorte.edu.co

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received May 17, 2018; final manuscript received October 7, 2018; published online October 26, 2018. Assoc. Editor: Abel Hernandez-Guerrero.

J. Energy Resour. Technol 141(3), 031801 (Oct 26, 2018) (10 pages) Paper No: JERT-18-1351; doi: 10.1115/1.4041723 History: Received May 17, 2018; Revised October 07, 2018

Considering the potential of using concentrating solar power systems to supply the heat required for the allothermal gasification process, this study analyzes hydrogen production in such a system by assuming typical radiative heat flux profiles for a receiver of a central tower concentrated solar power (CSP) plant. A detailed model for allothermal gasification in a downdraft fixed bed tubular reactor is proposed. This considers solid and gas phases traveling in parallel flow along the reactor. Results for temperature and gas profile show a reasonable quantitative agreement with experimental works carried out under similar conditions. Aiming to maximize H2 yield, eight Gaussian flux distributions, similar to those typical of CSP systems, each with a total power of 8 kW (average heat flux 20 kW/m2), but with varying peak locations, were analyzed. The results show a maximum producer gas yield and a chemical efficiency of 134.1 kmol/h and 45.9% respectively, with a molar concentration of 47.2% CO, 46.9% H2, 3.3% CH4, and 2.6% CO2 for a distribution peak at z = 1.4 m, thus relatively close to the flue gas outlet. Hydrogen production and gas yield using this configuration were 4% and 2.9% higher than the achieved using the same power but homogeneously distributed. Solar to chemical efficiencies ranged from 38.9% to 45.9%, with a minimum when distribution peak was at the reactor center. These results are due to high temperatures during the latter stage of the process favoring char gasification reactions.

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References

Ladanai, S. , and Vinterbäck, J. , 2009, “ Global Potential of Sustainable Biomass for Energy,” SLU, Institutionen för energi och Tek. Swedish University of Agricultural Sciences, Department of Energy and Technology, Uppsala, Sweden, p. 32.
Bridgwater, A. V. V. , 1995, “ The Technical and Economic Feasibility of Biomass Gasification for Power Generation,” Fuel, 74(5), pp. 631–653. [CrossRef]
Zhang, W. , 2010, “ Automotive Fuels From Biomass Via Gasification,” Fuel Process. Technol., 91(8), pp. 866–876. [CrossRef]
Lenis, Y. A. , and Pérez, J. F. , 2014, “ Gasification of Sawdust and Wood Chips in a Fixed Bed Under Autothermal and Stable Conditions,” Energy Sources, Part A, 36(23), pp. 2555–2565. [CrossRef]
Pérez, J. F. , Melgar, A. , and Benjumea, P. N. , 2012, “ Effect of Operating and Design Parameters on the Gasification/Combustion Process of Waste Biomass in Fixed Bed Downdraft Reactors: An Experimental Study,” Fuel, 96, pp. 487–496. [CrossRef]
Islam, S. , and Dincer, I. , 2018, “ A Comparative Study of Syngas Production From Two Types of Biomass Feedstocks With Waste Heat Recovery,” ASME J. Energy Resour. Technol., 140(9), p. 092002.
Di Blasi, C. , 2000, “ Dynamic Behaviour of Stratified Downdraft Gasfiers,” Chem. Eng. Sci., 55(15), pp. 2931–2944. [CrossRef]
Di Blasi, C. , 2004, “ Modeling Wood Gasification in a Countercurrent Fixed-Bed Reactor,” AIChE J., 50(9), pp. 2306–2319. [CrossRef]
Di Blasi, C. , and Branca, C. , 2013, “ Modeling a Stratified Downdraft Wood Gasifier With Primary and Secondary Air Entry,” Fuel, 104, pp. 847–860. [CrossRef]
Yucel, O. , and Hastaoglu, M. A. , 2016, “ Kinetic Modeling and Simulation of Throated Downdraft Gasifier,” Fuel Process. Technol., 144, pp. 145–154. [CrossRef]
Hobbs, M. L. , Radulovic, P. T. , and Smoot, L. D. , 1992, “ Modeling Fixed-Bed Coal Gasifiers,” AIChE J., 38(5), pp. 681–702.
Musinguzi, W. B. , Okure, M. A. E. , Sebbit, A. , Løvås, T. , and da Silva, I. , 2014, “ Thermodynamic Modeling of Allothermal Steam Gasification in a Downdraft Fixed-Bed Gasifier,” Adv. Mater. Res, 875–877, pp. 1782–1793. [CrossRef]
Al-Zareer, M. , Dincer, I. , and Rosen, M. A. , 2018, “ Influence of Selected Gasification Parameters on Syngas Composition From Biomass Gasification,” ASME J. Energy Resour. Technol., 140(4), p. 41803. [CrossRef]
Iliuta, I. , Leclerc, A. , and Larachi, F. , 2010, “ Allothermal Steam Gasification of Biomass in Cyclic Multi-Compartment Bubbling Fluidized-Bed Gasifier/Combustor—New Reactor Concept,” Bioresour. Technol, 101(9), pp. 3194–3208. [CrossRef] [PubMed]
Olaleye, A. K. , Adedayo, K. J. , Wu, C. , Nahil, M. A. , Wang, M. , and Williams, P. T. , 2014, “ Experimental Study, Dynamic Modelling, Validation and Analysis of Hydrogen Production From Biomass Pyrolysis/Gasification of Biomass in a Two-Stage Fixed Bed Reaction System,” Fuel, 137, pp. 364–374. [CrossRef]
Garcia, H. J. , 2011, “ Modelación de La Gasificación de Biomasa En Un Reactor de Lecho Fijo,” Universidad Nacional de Colombia, Bogotá, Colombia.
Romero, M. , and Steinfeld, A. , 2012, “ Concentrating Solar Thermal Power and Thermochemical Fuels,” Energy Environ. Sci., 5(11), p. 9234. [CrossRef]
Kalinci, Y. , Hepbasli, A. , and Dincer, I. , 2013, “ Performance Assessment of Hydrogen Production From a Solar-Assisted Biomass Gasification System,” Int. J. Hydrogen Energy, 38(14), pp. 6120–6129. [CrossRef]
Piatkowski, N. , Wieckert, C. , Weimer, A. W. , and Steinfeld, A. , 2011, “ Solar-Driven Gasification of Carbonaceous Feedstock—A Review,” Energy Environ. Sci., 4(1), pp. 73–82. [CrossRef]
Piatkowski, N. , and Steinfeld, A. , 2011, “ Solar Gasification of Carbonaceous Waste Feedstocks in a Packed-Bed Reactor-Dynamic Modeling and Experimental Validation,” AIChE J., 57(12), pp. 3522–3533. [CrossRef]
Melchior, T. , Perkins, C. , Lichty, P. , Weimer, A. W. , and Steinfeld, A. , 2009, “ Solar-Driven Biochar Gasification in a Particle-Flow Reactor,” Chem. Eng. Process. Process Intensif., 48(8), pp. 1279–1287. [CrossRef]
Maag, G. , and Steinfeld, A. , 2010, “ Design of a 10 MW Particle-Flow Reactor for Syngas Production by Steam-Gasification of Carbonaceous Feedstock Using Concentrated Solar Energy,” Energy Fuels, 24(12), pp. 6540–6547. [CrossRef]
Kruesi, M. , Jovanovic, Z. R. , dos Santos, E. C. , Yoon, H. C. , and Steinfeld, A. , 2013, “ Solar-Driven Steam-Based Gasification of Sugarcane Bagasse in a Combined Drop-Tube and Fixed-Bed Reactor—Thermodynamic, Kinetic, and Experimental Analyses,” Biomass Bioenergy, 52, pp. 173–183. [CrossRef]
Lichty, P. , Perkins, C. , Woodruff, B. , Bingham, C. , and Weimer, A. , 2010, “ Rapid High Temperature Solar Thermal Biomass Gasification in a Prototype Cavity Reactor,” ASME J. Sol. Energy Eng., 132(1), p. 11012. [CrossRef]
Kruesi, M. , Jovanovic, Z. R. , and Steinfeld, A. , 2014, “ A Two-Zone Solar-Driven Gasifier Concept: Reactor Design and Experimental Evaluation With Bagasse Particles,” Fuel, 117(Pt. A), pp. 680–687. [CrossRef]
Siebers, D. L. , and Kraabel, J. S. , 1984, Estimating Convective Energy Losses From Solar Central Receivers, Sandia National Laboratories, Albuquerque, NM.
Di Blasi, C. , Signorelli, G. , and Portoricco, G. , 1999, “ Countercurrent Fixed-Bed Gasification of Biomass at Laboratory Scale,” Ind. Eng. Chem. Res., 38(7), pp. 2571–2581. [CrossRef]
Mandl, C. , Obernberger, I. , and Biedermann, F. , 2010, “ Modelling of an Updraft Fixed-Bed Gasifier Operated With Softwood Pellets,” Fuel, 89(12), pp. 3795–3806. [CrossRef]
Pérez, J. , 2009, Gasificación de Biomasa: Estudios Teórico Experimentales En Lecho Fijo Equicorriente, Editorial Universidad de Antioquia, Medellín, Colombia.
Buekens, A. G. , and Schoeters, J. G. , 1985, “ Modelling of Biomass Gasification,” Fundamentals of Thermochemical Biomass Conversion, R. P. Overend, T. A. Milne, and L. K. Mudge, eds., Elsevier Applied Science Publishers, Brussels, Belgium, pp. 619–689.
Bryden, K. M. , and Ragland, K. W. , 1996, “ Numerical Modeling of a Deep, Fixed Bed Combustor,” Energy Fuels, 10(2), pp. 269–275. [CrossRef]
Z'Graggen, A. , Haueter, P. , Maag, G. , Vidal, A. , Romero, M. , and Steinfeld, A. , 2007, “ Hydrogen Production by Steam-Gasification of Petroleum Coke Using Concentrated Solar Power-III. Reactor Experimentation With Slurry Feeding,” Int. J. Hydrogen Energy, 32(8), pp. 992–996. [CrossRef]
Gómez, A. , Klose, W. , and Rincón, S. , 2008, Pirólisis de Biomasa: Cuesco de Palma de Aceite, Kassel University Press, Kassel, Germany.
Li, Y. H. , and Chen, H. H. , 2018, “ Analysis of Syngas Production Rate in Empty Fruit Bunch Steam Gasification With Varying Control Factors,” Int. J. Hydrogen Energy, 43(2), pp. 667–675. [CrossRef]

Figures

Grahic Jump Location
Fig. 4

Temperature profile comparison between A1 (Tsi and Tgi) and A2 (Ti) approaches. Left: top of the reactor. Right: bottom of reactor.

Grahic Jump Location
Fig. 5

Model validation after reaching steady-state. Left: temperature profile; right: gas concentration.

Grahic Jump Location
Fig. 6

Gas yield (left) and solid yield and temperature profile (right) at homogeneous heat flux distribution

Grahic Jump Location
Fig. 7

Performance indicators: (a) temperature profile, (b) final gas concentration, and (c) process efficiencies. BM indicates benchmark.

Grahic Jump Location
Fig. 8

Gas components (left) and solid phase rates (right) for strategies G0.2, G0.8, and G1.4

Grahic Jump Location
Fig. 9

Process performance as a function of peak flux value and its location

Grahic Jump Location
Fig. 3

Heat distribution along gasifier length. Biomass enters at 0 m.

Grahic Jump Location
Fig. 2

Schematic representation of the discretization method employed to solve the system of partial differential equations

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