Research Papers: Fuel Combustion

Co-Combustion of Pulverized Coal and Biomass in Fluidized Bed of Furnace

[+] Author and Article Information
Mitianiec Wladyslaw

Mechanical Faculty,
Cracow University of Technology,
Al. Jana Pawla II 37,
Krakow 31-864, Poland
e-mail: wmitanie@usk.pk.edu.pl

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received December 5, 2016; final manuscript received April 26, 2017; published online June 27, 2017. Assoc. Editor: Wojciech Stanek.

J. Energy Resour. Technol 139(6), 062204 (Jun 27, 2017) (8 pages) Paper No: JERT-16-1491; doi: 10.1115/1.4036958 History: Received December 05, 2016; Revised April 26, 2017

Combustion processes of two fuels, pulverized coal and biomass, in furnaces take place at steady state. Combustion of condensed fuels involves one-way interfacial flux due to phenomena in the condensed phase (evaporation or pyrolysis) and reciprocal ones (heterogeneous combustion and gasification). Many of the species injected in the gas phase are later involved in gas phase combustion. This paper presents results of combustion process of two-phase charge contained coal and wetted biomass, where the carrier was the air with given flow rate. The furnace has three inlets with assumed inlet flow rate of coal, biomass, and air, and combustion process takes place in the furnace fluidized space. The simulation of such combustion process was carried out by numerical code of open source computational fluid dynamics (CFD) program code_saturne. For both fuels, the moist biomass with following mass contents: C = 53%, H = 5.8%, O = 37.62%, ash = 3.6, and mean diameter of molecules equal to 0.0008 m and pulverized coal with following mass contents: C = 76.65%, H = 5.16%, O = 9.9%, ash = 6.21%, and mean molecule diameter 0.000025 m were used. Devolatilization process with kinetic reactions was taken into account. Distribution of the main combustion product in furnace space is presented with disappearance of the molecules of fuels. This paper presents theoretical description of the two-phase charge, specification of the thermodynamic state of the charge in inlet boundaries and furnace space, and thermal parameters of solid fuel molecules obtained from the open source postprocessor paraview.

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Hall, D. O. , Rosillo-Calle, F. , and de Groot, P. , 1992, “ Biomass Energy Lessons From Case Studies in Developing Countries,” Energy Policy, 20(1), pp. 62–73. [CrossRef]
McGowan, F. , 1991, “ Controlling the Greenhouse Effect: The Role of Renewables,” Energy Policy, 19(2), pp. 110–118. [CrossRef]
Demirbas, A. , 2004, “ Combustion Characteristics of Different Biomass Fuels,” Prog. Energy Combust. Sci., 30(2), pp. 219–230. [CrossRef]
Glodek, E. , 2010, “ Combustion and Co-Combustion of Biomass: Guide (Spalanie i wspólspalanie biomasy: Poradnik),” Institute of Ceramics and Building Materials, Opole, Poland.
Sahu, S. , Chakraborty, N. , and Sarkar, P. , 2014, “ Coal—Biomass Co-Combustion: An Overview,” Renewable Sustainable Energy Rev., 39, pp. 575–586. [CrossRef]
Hughes, E. , 2000, “ Biomass Cofiring: Economics, Policy and Opportunities,” Biomass Bioenergy, 19(6), pp. 457–465. [CrossRef]
Saidur, R. , Abdelaziz, E. A., Demirbas, A., Hossain, M. S., and Mekhilef, S., 2011, “ A Review on Biomass as a Fuel for Boilers,” Renewable Sustainable Energy Rev., 15(5), pp. 2262–2289. [CrossRef]
Tillman, D. A. , 2000, “ Cofiring Benefits for Coal and Biomass,” Biomass Bioenergy, 19(6), pp. 363–364. [CrossRef]
Narayanan, K. , and Natarajan, E. , 2007, “ Experimental Studies on Cofiring of Coal and Biomass Blends in India,” Renewable Energy, 32(15), pp. 2548–2558. [CrossRef]
Williams, A. , Pourkashanian, M. , and Jones, J. , 2001, “ Combustion of Pulverised Coal and Biomass,” Prog. Energy Combust. Sci., 27(6), pp. 587–610. [CrossRef]
Baxter, L. , 2011, “ Biomass-Coal Cofiring: An Overview of Technical Issues,” Solid Biofuels for Energy, Springer, London, pp. 43–73.
Baxter, L. , 2005, “ Biomass-Coal Co-Combustion: Opportunity for Affordable Renewable Energy,” Fuel, 84(10), pp. 1295–1302. [CrossRef]
Xie, J.-J. , Yang, X.-M., Zhang, L., Ding, T.-L., Song, W.-L., and Lin, W.-G., 2007, “ Emissions of SO2, NO and N2O in a Circulating Fluidized Bed Combustor During Co-Firing Coal and Biomass,” J. Environ. Sci., 19(1), pp. 109–116. [CrossRef]
Kazanc, F. , 2011, “ Emissions of NOx and SO2 From Coals of Various Ranks, Bagasse, and Coal-Bagasse Blends Burning in O2/N2 and O2/CO2 Environments,” Energy Fuels, 25(7), pp. 2850–2861. [CrossRef]
Rokni, E. , Panahi, A., Ren, X., and Levendis, Y. A., 2016, “ Reduction of Sulfur Dioxide Emissions by Burning Coal Blends,” ASME J. Energy Resour. Technol., 138(3), p. 032204. [CrossRef]
Rokni, E. , Panahi, A., Ren, X., and Levendis, Y. A., 2016, “ Curtailing the Generation of Sulfur Dioxide and Nitrogen Oxide Emissions by Blending and Oxy-Combustion of Coals,” Fuel, 181, pp. 772–784. [CrossRef]
Badzioch, S. , and Hawksley, P. , 1970, “ Kinetics of Thermal Decomposition of Pulverized Coal Particles,” Ind. Eng. Chem. Process Des. Dev., 9(4), pp. 521–530. [CrossRef]
Kobayashi, H. , 1976, “ Devolatilization of Pulverized Coal at High Temperature,” Doctoral thesis, Massachusetts Institute of Technology, Cambridge, MA. https://dspace.mit.edu/handle/1721.1/26754
Kobayashi, H. , Howard, J. B., and Sarofim, A. F., 1977, “ Coal Devolatilization in High Temperatures,” Symp. Combust., 16(1), pp. 411–425. [CrossRef]
Maffei, T. , Frassoldati, A., Cuoci, A., Ranzi, E., and Faravelli, T., 2013, “ Predictive One Step Kinetic Model of Coal Pyrolysis for CFD Applications,” Proc. Combust. Inst., 34(2), pp. 2401–2410. [CrossRef]
Zhang, Y., Xu, X., and Zuo, Y., 1999, “ Experiments and Modelling of Coal Pyrolysis Under Fluidized Bed Conditions,” J. Therm. Sci., 8(3), pp. 202–206. [CrossRef]
Li, J., Paul, M. C., Younger, P. L., Watson, I., Hossain, M., and Welch, S., 2015, “ Characterization of Biomass Combustion at High Temperature Based on Upgraded Single Particle Model,” Appl. Energy, 156, pp. 749–755. [CrossRef]
Authier, O. , Thunin, E., Plion, P., Schönnenbeck, C., Leyssens, G., Brilhac, J.-F., and Porcheron, L., 2014, “ Kinetic Study of Pulverized Coal Devolatilization for Boiler CFD Modeling,” Fuel, 122, pp. 254–260. [CrossRef]
Zahirovic, S. , Scharler, R. , and Obenberger, I. , 2004, “ Advanced CFD Modeling of Pulverized Biomass Combustion,” University of Technology, Graz, Austria, accessed June 16, 2017, http://www.bios-bioenergy.at/uploads/media/Paper-Zahirovic-CFDPulvBiomassComb-Vancouver-2004-09-10.pdf
Jenkins, B. M. , Baxter, L. L. , Miles, T. R. , and Miles, T. R. , 1998, “ Combustion Properties of Biomass,” Fuel Process. Technol., 54, pp. 17–46. [CrossRef]
Jugola, P. , and Marko Huttunen, A. , 2013, “ CFD Simulation of Biofuel and Coal Co-Combustion in a Pulverized Coal Fired Furnace,” International Flame Research Foundation, The Finnish and Swedish National Committees, Livorno, Italy, accessed June 19, 2017, http://www.ffrc.fi/FlameDays_2013/Papers/Jukola1.pdf
Nussbaumer, T. , 2003, “ Combustion and Co-Combustion of Biomass: Fundamentals, Technologies, and Primary Measures for Emission Reduction,” Energy Fuels, 17(6), pp. 1510–1521. [CrossRef]
Carra, S. , 2009, “ Homogeneous and Heterogeneous Combustion,” Politechnica di Milano, Milan, Italy, accessed June 16, 2017, www.treccani.it/export/sites/default/./413_430_ing.pdf
EDF&RD, 2015, “  Code_Saturne 4.2.0: Theory Guide,” EDF&RD, Chatou Cedex, France, accessed June 19, 2017, www.code-saturne.org
Stolarski, M. , and Krzyzaniak, M. , 2011, “ Wartosc Opalowa i Sklad Elementarny Biomasy Wierzby Produkowanej Systemem Eko-Salix,” Fragm. Agron., 28(4), pp. 86–95.


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Fig. 2

Overall dimensions of boiler

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Fig. 1

View of simulation cylindrical model of boiler with inlets and outlet

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Fig. 3

Distribution of temperature inside the furnace

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Fig. 4

Contours of charge velocity in longitudinal section of furnace

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Fig. 5

Contours of mass ratio of carbon dioxide

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Fig. 13

Emission of SO2, CO2, and CO along furnace length

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Fig. 6

Contours of mass ratio of sulfur dioxide

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Fig. 7

Variation of mole ratio of carbon in biomass and coal along the central axis X

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Fig. 8

Distribution of temperature in the boiler after correction of dimensions

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Fig. 9

Contours of NO after changing of boiler dimensions

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Fig. 10

Contours of SO2 distribution in the modified boiler

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Fig. 11

Disappearance mass rate of biomass

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Fig. 12

Contours of distribution of CO mass ratio in modified furnace




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