화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.28, No.4, 1144-1147, April, 2011
DOI10.1007/s11814-010-0477-z  Export Citation
A model on an entrained bed-bubbling bed process for CO2 capture from flue gas
Jeong-Hoo Choi†, Chang-Keun Yi1, and Sung-Ho Jo1
  • Department of Chemical Engineering, Konkuk University, Seoul 143-701, Korea
  • 1Korea Institute of Energy Research, Daejeon 305-343, Korea
E-mail:
A simplified model has been developed to investigate effects of important operating parameters on performance of an entrained-bed absorber and bubbling-bed regenerator system collecting CO2 from flue gas. The particle population balance was considered together with chemical reaction to determine the extent of conversion in both absorber and regenerator. The calculated CO2 capture efficiency agreed with the measured value reasonably well. Effects of absorber parameters - temperature, gas velocity, static bed height, moisture content of feed gas on CO2 capture efficiency - have been investigated in a laboratory scale process. The CO2 capture efficiency decreased as temperature or gas velocity increased. However, it increased with static bed height or moisture concentration. The CO2 capture efficiency was exponentially proportional to each parameter. Based on the absolute value of exponent of the parameter, the effect of gas velocity, static bed height, and moisture content was one-half, one-third, and one-fourth as strong as that of temperature, respectively.
Keywords:CO2 Capture;Model;Fluidized Bed;Entrained Bed;Sodium Carbonate
  1. Yi CK, Hong SW, Jo SH, Son JE, Choi JH, Korean Chem. Eng. Res., 43(2), 294 (2005)
  2. Yi CK, Jo SH, Seo Y, Lee JB, Ryu CK, Int. J. Greenhouse Gas Control., 1, 31 (2007)
  3. Lee JB, Ryu CK, Baek JI, Lee JH, Eom TH, Kim SH, Ind. Eng. Chem. Res., 47(13), 4465 (2008)
  4. Yi CK, Jo SH, Seo Y, J. Chem. Eng. Jpn., 41(7), 691 (2008)
  5. Abanades JC, Alonso M, Rodriguez N, Gonzalez B, Grasa G, Murillo R, Energy Procedia., 1, 1147 (2009)
  6. Alonso M, Rodriguez N, Grasa G, Abanades JC, Chem. Eng. Sci., 64(5), 883 (2009)
  7. Fang F, Li ZS, Cai NS, Ind. Eng. Chem. Res., 48(24), 11140 (2009)
  8. Park KW, Park YS, Park YC, Jo SH, Yi CK, Korean Chem. Eng. Res., 47(3), 349 (2009)
  9. Park YC, Jo SH, Park KW, Park YS, Yi CK, Korean J. Chem. Eng., 26(3), 874 (2009)
  10. Seo Y, Jo SH, Ryu CK, Yi CK, J. Environ. Eng., 135, 473 (2009)
  11. Strohle J, Lasheras A, Galloy A, Epple B, Chem. Eng. Technol., 32(3), 435 (2009)
  12. Lapple CE, Chem. Eng., 58, 144 (1951)
  13. Choi JH, Chang IY, Shun DW, Yi CK, Son JE, Kim SD, Ind. Eng. Chem. Res., 38(6), 2491 (1999)
  14. Merrick D, Highley J, AIChE Symp. Ser., 70, 366 (1974)
  15. Yi CK, Elemental technology development of a dry regenerable sorbent process for CO2 capture from flue gas streams., Korea Institute of Energy Research, Ministry of Science & Technology, DA1-210 (2005)
  16. Choi JH, Park JY, Yi CK, Jo SH, Son JE, Ryu CK, Kim SD, Korean Chem. Eng. Res., 43(2), 286 (2005)
  17. Kunii D, Levenspiel O, Fluidization Engineering., 2nd Ed., Butterworth-Heinemann, Boston (1991)