Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Reaction Characteristics of WGS Catalyst with Fraction of Catalyst in a Batch Type Fluidized Bed Reactor

회분식 유동층 반응기에서 촉매함량 변화에 따른 WGS 촉매의 반응특성

  • Received : 2011.07.05
  • Accepted : 2011.08.22
  • Published : 2011.08.30
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Abstract

To find the optimum mixing ratio of WGS catalyst with $CO_2$ absorbent for SEWGS process, water gas shift reaction tests were carried out in a fluidized bed reactor using commercial WGS catalyst and sand (as a substitute for $CO_2$ absorbent). WGS catalyst content, gas velocity, and steam/CO ratio were considered as experimental variables. CO conversion increased as the catalyst content increased during water gas shift reaction. Variations of the CO conversion with the catalyst content were small at low gas velocity. However, those variations increased at higher gas velocity. Within experimental range of this study, the optimum operating condition(steam/CO ratio=3, gas velocity = 0.03 m/s, catalyst content=10 wt.%) to get high CO conversion and $CO_2$ capture efficiency was confirmed. Moreover, long time water gas shift reaction tests up to 20 hours were carried out for two cases (catalyst content = 10 and 20 wt.%) and we could conclude that the WGS reactivity at those conditions was maintained up to 20 hours.

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References

  1. O. Maurstad, "An Overview of Coal Based Integrated Gasification Combined Cycle (IGCC) Technology", MIT report, Publication No. LFEE 2005-002 WP, 2008, pp. 1-43.
  2. IEA report, "Prospects for Hydrogen and Fuel Cells", IEA Books, 2005, pp. 49-55.
  3. H. J. Ryu, C. K. Yi, D. Shun, G. T. Jin, "Conceptual Design and Performance Estimation of SEWGS Process for Precombustion $CO_{2}$ Capture", Theories and Applications of Chem. Eng., Vol. 14, No. 2, 2008, p. 293.
  4. J. B. Lee, T. H. Eom, D. H. Choi, K. W. Park, J. Ryu, J. I. Baek, C. K. Ryu, H. J. Ryu, "Study on Hybrid Materials of WGS Cataylst and $CO_{2}$ Sorbent for SEWGS Process", International Symposium on Low Carbon & Renewable Energy Technology, 15-18, November, Lotte Hotel, Jeju, Korea, 2010, p. 372.
  5. J. M. Lee, Y. J. Min, K. B. Lee, S. G. Jeon, J. G. Na, H. J. Ryu, "Enhancement of $CO_{2}$ Sorption Uptake on Hydrotalcite by Impregnation with $K_{2}CO_{3}$", Langmuir, Vol. 26, No. 24, 2010, p. 18788. https://doi.org/10.1021/la102974s
  6. H. J. Ryu, "Selection of Process Configuration and Operating Conditions for SEWGS System", Trans. of the Korean Hydrogen and New Energy Society, Vol. 20, No. 2, 2009, p. 168.
  7. H. J. Ryu, G. T. Jin, M. H. Park, "Natural Gas Combustion Characteristics in a Chemical Looping Combustor with Three Different Oxygen Carrier Particles", Journal of Chemical Engineering Japan, Vol. 41, No. 7, 2008, p. 716. https://doi.org/10.1252/jcej.07WE079
  8. H. J. Ryu, D. Shun, D. H. Bae, M. H. Park, "Syngas Combustion Characteristics of Four Oxygen Carrier Particles for Chemical Looping Combustion in a Batch Fluidized Bed Reactor", Korean Journal of Chemical Engineering, Vol. 26, No. 2, 2009, p. 523. https://doi.org/10.1007/s11814-009-0089-7
  9. H. J. Ryu, K. S. Kim, Y. S. Park, M. H. Park, "Natural Gas Combustion Characteristics of Mass Produced Oxygen Carrier Particles for Chemical Looping Combustor in a Batch Type Fluidized Bed Reactor", Trans. of the Korean Hydorgen and New Energy Society, Vol. 20, No. 2, 2009, p. 151.
  10. H. J. Ryu, H. S. Kim, C. K. Yi, S. H. Jo, J. H. Moon, J. C. Kim, "Reactivity Analysis of $CO_{2}$ Absorbent-WGS Catalyst One Body Particles for SEWGS", Theories and Applications of Chem. Eng., Vol. 16, No. 2, 2010, p. 279.
  11. H. J. Ryu, D. H. Bae, S. Y. Lee, D. Shun, "Reactivity Analysis of WGS Catalysts for SEWGS Process", Theories and Applications of Chem. Eng., Vol. 16, No. 2, 2010, p. 272.