활성탄소섬유상에서 CH4/CO2 혼합가스의 흡착 특성

Adsorption Characteristics of $CH_4/CO_2$ Mixed Gases on Activated Carbon Fibers

  • 문승현 (한국에너지기술연구원 청정에너지연구부) ;
  • 심재운 (한국에너지기술연구원 청정에너지연구부)
  • Moon, Seung-Hyun (Energy and Environment Research Department, Korea Institute of Energy Research) ;
  • Shim, Jae-Woon (Energy and Environment Research Department, Korea Institute of Energy Research)
  • 발행 : 2004.01.01

초록

An adsorption process to recover the pure $CH_4\;and\;CO_2$ from its mixture was examined. In this study, activated carbon fibers were used as a selective adsorbent. The activated carbon fibers has 78~94% micropore volume and 10.5~20.3${\AA}$ narrow pore size, and showed high adsorption rate and the good selectivity for $CO_2$ under the ambient pressure. The ACF with high surface area showed short mass transfer zone and long breakthrough time and, its adsorption capacity depended on the microporosity. Compared with single component adsorption, the amount adsorbed $CO_2$ on ACF increased by the roll-up of $CH_4$ in mixed gases. The adsorption selectivity increased as now rate and $CO_2$ concentration of mixed gases increased, showing 5.2 selectivity for 75% $CO_2$ concentration.

키워드

참고문헌

  1. Alcaniz-Monge, J., M.A. Casa-Lillo, D. Cazorla-Amoros, and A. Linares-Solano (1997) Methane storage in activated carbon fibres, Carbon, 35, 291-297
  2. Burchell, T.D., R.R. Judkins, M.R. Rogers, and A.M. Williams (1997) A novel process and material for the separation of carbon dioxide and hydrogen sulfide gas mixtures, Carbon, 35, 1279-1294
  3. Ehrburger, P., S.K. Ryu, B.S. Rhee, J.K. Lee, D.W. Lee, and N. Pusset (1990) Proceeding of International Carbon Conference, Paris. 96
  4. Fung, A.W.P. (1993) Raman scattering and electrical conductivity in higly disordered activated carbon fibres by air oxidation. J. Mat. Res., 31. 489-500
  5. Gregg. S.J. and K.S.W. Sing (1982) Adsorption. Surface Area and Porosity. 2nd ed., Academic Press. New York, 195pp
  6. Kim, Y.C., Y.K. Yeo. H.U. Lee. and H.K. Song (1998) Simulation of PSA process for $CO_2$ recovery from flue gas, 화학공학회지, 36, 562-570
  7. Mochida, I., S. Yatsunami, Y. Kawabuchi, and Y. Nakayama (1995) Influence of heat-treatment on the selective adsorption of $CO_2$ in a model natural gas over molecular sieve carbons, Carbon, 33, 1611-1619
  8. Quinn, D.F. and J.A. Macdonald (1992) Natural gas storage, Carbon, 30, 1097-1103
  9. Ryu, S.K. (1990) Porosity of activated carbon fibers, High Temperature - High Pressure, 22, 345- 354
  10. Ruthven, D.M., S. Farooq, and K.S. Knaebel (1994) Pressure Swing Adsorption, VCH, New York
  11. Villar-Rodil, S., A. Martinez-Alonso, J.M.D. Tascon (2002) 'Carbon molecular sieves for air separation from nomex aramid fibers', J. Colloid. Interface Sci., 254, 414-416 https://doi.org/10.1006/jcis.2002.8658
  12. Yang, R.T. (1987) Gas Separation by Adsorption Process, Butterworths, Boston