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

Solid Circulation Characteristics of Two Oxygen Carriers for Chemical Looping Combustion System

케미컬루핑 연소시스템을 위한 두 가지 산소전달입자들의 고체순환 특성

  • Received : 2018.07.19
  • Accepted : 2018.08.31
  • Published : 2018.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

To confirm the operating range of two oxygen carriers for chemical looping combustion system, the effects of operating variables on solid circulation rate were measured and discussed using a two-interconnected circulating fluidized bed system at ambient temperature and pressure. Moreover, suitable operating ranges to avoid choking of the fast fluidized bed (air reactor) were confirmed for two oxygen carriers. A continuous long-term operation of steady-state solid circulation more than 24 hours was also demonstrated within the operating windows. Finally we could confirm that those two oxygen carriers are suitable for chemical looping combustion system with high solid circulation rate and smooth solid circulation.

Keywords

References

  1. H. J. Ryu, S. S. Park, J. H. Moon, W. K. Choi, and Y. W. Rhee, "Effects of Temperature, Pressure, and Gas Residence Time on Methane Combustion Characteristics of Oxygen Carrier Particle in a Pressurized Fluidized Bed Reactor", Trans. of the Korean Hydrogen and New Energy Society, Vol. 23, No. 2, 2012, pp. 173-183. https://doi.org/10.7316/KHNES.2012.23.2.173
  2. 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", Korean Chem. Eng. Res., Vol. 50, No. 5, 2012, pp. 843-849. https://doi.org/10.9713/kcer.2012.50.5.843
  3. Y. Liu, Q. Guo, Y. Cheng, and H. J. Ryu, "Reaction Mechanism of Coal Chemical Looping Process for syngas Production with CaSO4 Oxygen Carrier in the CO2 Atmosphere", Industrial and Engineering Chemistry Research, Vol. 51, 2012, pp. 10364-10373. https://doi.org/10.1021/ie3009499
  4. H. J. Ryu, C. W. Lee, D. H. Lee, D. H. Bae, S. Y. Lee, and Y. S. Park, "Direct Combustion Characteristics of Coal by Oxygen Carrier", Trans. of the Korean Hydrogen and New Energy Society, Vol. 25, No. 1, 2014, pp. 87-96. https://doi.org/10.7316/KHNES.2014.25.1.087
  5. Y. Liu, W. Jia, Q. Guo, and H. J. Ryu, "Effect of Gasifying Medium on the Coal Chemical Looping Gasification with CaSO4 as Oxygen Carrier", Chinese Journal of Chemical Engineering, Vol. 22, 2014, pp. 1208-1214. https://doi.org/10.1016/j.cjche.2014.09.011
  6. Q. Guo, X. Hu, Y. Liu, W. Jia, M. Yang, W. Man, H. Tian, and H. J. Ryu, "Coal Chemical Looping Gasification of Ca based Oxygen Carriers Decorated by CaO", Powder Technology, Vol. 275, 2015, pp. 60-68. https://doi.org/10.1016/j.powtec.2015.01.061
  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. J. Y. Yoon, H. Kim, J. Kim, D. Lee, J. I. Baek, and H. J. Ryu, "Solid Circulation Characteristics of Oxygen Carrier for Chemical Looping Combustion System at Ambient Temperature and Pressure", Trans. of the Korean Hydrogen and New Energy Society, Vol. 28, No. 4, 2017, pp. 384-391. https://doi.org/10.7316/KHNES.2017.28.4.384