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http://dx.doi.org/10.7316/KHNES.2016.27.2.201

Conceptual Design and Feasibility Study on 0.5 MWth Pressurized Chemical Looping Combustor  

RYU, HOJUNG (Korea Institute of Energy Research)
LEE, DONGHO (Korea Institute of Energy Research)
JANG, MYOUNGSOO (Korea Institute of Energy Research)
KIM, JUNGHWAN (Korea Institute of Energy Research)
BAEK, JEOM-IN (Korea Electric Power Corporation (KEPCO) Research Institute)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.27, no.2, 2016 , pp. 201-210 More about this Journal
Abstract
To develop a pressurized chemical looping combustor, conceptual design of 0.5 MWth chemical looping combustor was performed by means of mass and energy balance calculations. Based on the conceptual design, reactivity of oxygen carrier and solid circulation rate were selected as key parameters. Sensitivity analysis of those key parameters were conducted with the change of oxygen carrier utilization percent from 5 to 50% and proper solid circulation rate and solid conversion rate to meet 98% of $CO_2$ selectivity were confirmed. Feasibility of 0.5 MWth pressurized chemical looping combustor was confirmed by experimental studies to find real solid circulation rate and $CO_2$ selectivity within the operating conditions based on the conceptual design. We could varied very wide range of solid circulation rate in two interconnected fluidized bed system. We also got enough $CO_2$ selectivity more than 98% in semi-continuous chemical looping combustor using OCN717 oxygen carrier. Consequently, feasibility of 0.5 MWth pressurized chemical looping combustor was confirmed.
Keywords
Chemical looping; Conceptual design; Feasibility; Solid circulation rate; $CO_2$ selectivity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 J. I. Baek, H. Jo, T. Eom, J. Lee, H. J. Ryu, "The Effect of CBB($CaO{\cdot}BaO{\cdot}B_2O_3$) Addition on the Physical Properties and Oxygen Transfer Reactivity of NiO-based Oxygen Carriers for Chemical Looping Combustion", Trans, of Korean Hydrogen and New Energy Society, Vol. 27, No. 1, 2016, pp. 95-105.   DOI
2 H. J. Ryu, H. Kim, D. H. Lee, G. T. Jin and J. I. Baek, "Reduction and Decomposition Charactersitics of $CaSO_4$ Based Oxygen Carrier Particles", Trans, of Korean Hydrogen and New Energy Society, Vol. 26, No. 6, 2015, pp. 600-608.   DOI
3 M. Akai, T. Kagajo, and M. Inoue, "Performance Evaluation of Fossil Power Plant with $CO_2$ Recovery and Sequestering System", Energy Convers. Mgmt, Vol. 36, 1995, pp. 801-804.   DOI
4 N. Kimura, K. Omata, T. Kiga, S. Takano, and S. Shikisma, "The Characteristics of Pulverized Coal Combustion in $O_2/CO_2$ Mixture for $CO_2$ Recovery", Energy Convers. Mgmt., Vol. 36, 1995, pp. 805-808.   DOI
5 M. Ishida and H. Jin, "A New Advanced Power- Generation System Using Chemical-Looping Combustion", Energy, Vol. 19, No. 4, 1994, pp. 415-422.   DOI
6 T. Hatanaka, S. Matsuda and H. Hatano, "A New-Concept Gas-Solid Combustion System MERIT for High Combustion Efficiency and Low Emissions", Proceedings of the Thirty Second IECEC, Vol. 1, 1997, pp. 944-948.
7 J. Adanez, A. Abad, F. Garcia-Labiano, P. Gayan and L. F. de Diego, "Progress in Chemical Looping Combustion and Reforming Technology", Progress in Energy and Combustion Science, Vol. 38, 2012, pp. 215-282.   DOI
8 H. J. Ryu, S. S. Park, D. H. Lee, W. K. Choi and Y. W. Rhee, "Method for Improvement of Reduction Reactivity at High Temperature in a Chemical Looping Combustor", Krean Chem. Eng. Res., Vol. 50, No. 5, 2012, pp. 843-849.   DOI
9 S. S. Park, D. H. Lee, W. K. Choi, H. J. Ryu and Y. W. Rhee, "Syngas Combustion Characteristics of Oxygen Carrier Particle in a Pressurized Fluidized Bed Reactor", Trans, of Korean Hydrogen and New Energy Society, Vol. 23, No. 1, 2012, pp. 83-92.   DOI
10 H. J. Ryu, N. Y. Lim, D. H. Bae and G. T. Jin, "Minimum Fluidization Velocity and Transition Velocity to Fast Fluidization of Oxygen Carrier Particle for Chemical Looping Combustor", HWAHAK KONGHAK, Vol 41, No. 5, 2003, pp. 624-631.
11 H. J. Ryu and G. T. Jin, "Conceptual Design of 50 kW thermal Chemical-Looping Combustor and Analysis of Variables", Energy, Engg. J., Vol. 12, No. 4, 2003, pp. 289-301.