Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지
DOI QR코드

DOI QR Code

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

0.5 MWth 가압 케미컬루핑 연소기 개념설계 및 구현 가능성 조사

  • Received : 2016.03.22
  • Accepted : 2016.04.30
  • Published : 2016.04.30
Download PDF
⟨ Previous Next ⟩

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

References

  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. https://doi.org/10.7316/KHNES.2016.27.1.095
  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. https://doi.org/10.7316/KHNES.2015.26.6.600
  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. https://doi.org/10.1016/0196-8904(95)00125-W
  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. https://doi.org/10.1016/0196-8904(95)00126-X
  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. https://doi.org/10.1016/0360-5442(94)90120-1
  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. https://doi.org/10.1016/j.pecs.2011.09.001
  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. https://doi.org/10.9713/kcer.2012.50.5.843
  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. https://doi.org/10.7316/khnes.2012.23.1.083
  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.

Cited by

  1. Effect of solid residence time on CO2 selectivity in a semi-continuous chemical looping combustor vol.35, pp.6, 2018, https://doi.org/10.1007/s11814-018-0042-8