Korean Chemical Engineering Research

  • 제54권5호
  • /
  • Pages.648-652
  • /
  • 2016
  • /
  • 0304-128X(pISSN)
  • /
  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
권호 표지
DOI QR코드

DOI QR Code

구아니딘계 초염기 흡수제에 의한 충진탑에서의 이산화탄소 포집 특성

Carbon Dioxide Absorption in a Packed Column Using Guanidine-based Superbase Solution

  • 최영민 (한국교통대학교 화공생물공학과) ;
  • 홍연기 (한국교통대학교 화공생물공학과) ;
  • 유정균 (한국에너지기술연구원 그린에너지공정연구실)
  • Choi, Young Min (Department of Chemical and Biological Engineering, Korea National University of Transportation) ;
  • Hong, Yeon Ki (Department of Chemical and Biological Engineering, Korea National University of Transportation) ;
  • You, Jong Kyun (Green Energy Process Laboratory, Korea Institute of Energy Research)
  • 투고 : 2016.06.02
  • 심사 : 2016.07.04
  • 발행 : 2016.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 구아니딘계 초염기인 1,1,3,3-테트라메틸 구아니딘(TMG)과 에틸렌 글라이콜로 구성된 비수계 흡수제를 충진탑에 적용하여 이산화탄소 흡수특성을 고찰하였다. 흡수탑은 내경이 1 in이고 높이는 0.6 m이며 탑 내부는 $0.16in{\times}0.16in$의 규격을 갖는 다공 충진물로 채웠다. 흡수탑에서의 이산화탄소 제거 효율에 대한 흡수제 농도, 조업온도 등의 영향 뿐 아니라 이들이 물질전달 저항에 미치는 영향을 고찰하였다. 이산화탄소에 대한 TMG의 로딩값은 약 ${\alpha}=1.0mol_{CO2}/mol_{TMG}$에 달하였으며 이산화탄소가 적게 로딩된 흡수제에서는 총괄 물질전달 계수가 TMG의 농도에 비례하였으나 ${\alpha}=0.5$ 이상의 로딩값에서는 총괄 물질전달계수가 오히려 감소하였다. 이는 흡수제의 이산화탄소에 대한 로딩값에 따른 흡수제 점도 증가로 인한 액체상에서의 물질전달 저항 증가로 해석할 수 있다.

The study of $CO_2$ absorption in a packed column by 1,1,3,3-tetramethylguanidine (TMG) dissolved in ethylene glycol is presented. Absorption column of inner diameter 1 in and 0.6 m length was filled with Protruded-packing $0.16in{\times}0.16in$. We investigated the effect of operating conditions on overall mass transfer coefficients as well as on $CO_2$ removal efficiency. The loading values reached at about $1.0mol_{CO2}/mol_{TMG}$. In case of absorbent with lean $CO_2$ loading, the overall mass transfer coefficient was proportional to the concentration of TMG. However, in the range of more than ${\alpha}=0.5molCO_2/molTMG$, the overall mass transfer coefficients decreased with the concentration of TMG. It is due to the increasing of mass transfer resistance in liquid phase as increasing of viscosity at higher loading values.

키워드

참고문헌

  1. O, M.-G., Park, S.-J., Han, K.-H., Lee, J.-S. and Min, B.-M., "The Operational Characteristics of $CO_2$ 5 ton/day Absorptive Separation Pilot Plant," Korean Chem. Eng. Res., 50(1), 128-134(2012). https://doi.org/10.9713/kcer.2012.50.1.128
  2. Hasib-ur-Rahmana, M., Siaj, M. and Larachia, F., "Ionic Liquids for $CO_2$ Capture-Development and Progress," Chem. Eng. Proc., 49, 313-322(2010). https://doi.org/10.1016/j.cep.2010.03.008
  3. Zhao, B., Sun, Y., Yuan, Y., Gao, J., Wang, S., Zhuo, Y. and Chen, C., "Study on Corrosion in $CO_2$ Chemical Absorption Process Using Amine Solution," Energy Proc., 4, 93-100(2011). https://doi.org/10.1016/j.egypro.2011.01.028
  4. Jessop, P. G., Heldebrant, D. J., Li, X. W., Eckert, C. A. and Liotta, C. L., "Green Chemistry: Reversible Nonpolar-to-polar Solvent," Nature, 436, 1102-1102(2005).
  5. Heldebrant, D. J., Jessop, P. G., Thomas, C. A., Eckert, C. A. and Liotta, C. L., "The Reaction of 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) with Carbon Dioxide," J. Org. Chem., 70, 5335-5338 (2005). https://doi.org/10.1021/jo0503759
  6. Wang, C., Luo, H., Jiang, D., Li, H. and Dai, S., "Reversible and Robust $CO_2$ Capture by Equimolar Task-specific Ionic Liquidsuperbase Mixture," Green Chem., 12, 870-874(2010). https://doi.org/10.1039/b927514b
  7. Wang, C., Luo, H., Luo, X., Li. H. and Dai, S., "Equimolar $CO_2$ Capture by Imidazolium-based Ionic Liquids and Superbase Systems," Green Chem., 12, 2019-2023(2010). https://doi.org/10.1039/c0gc00070a
  8. Wang, C., Luo, H., Jiang, D., Li, H., Dai, S., "Carbon Dioxide Capture by Superbase-derived Protic Ionic Liquids," Angew. Chem. Int. Ed., 49, 5978-5981(2010). https://doi.org/10.1002/anie.201002641
  9. Wang, C., Luo, X., Luo, H., Jiang, D., Li, H. and Dai, S., "Tuning the Basicity of Ionic Liquids for Equimolar $CO_2$ Capture," Angew. Chem. Int. Ed., 50, 4918-4922(2011). https://doi.org/10.1002/anie.201008151
  10. Heldebrant, D. J., Koech, P. K., Ang, M. C. T., Liang, C., Rainbolt, J. E., Yonkera, C. R. and Jessop, P. G., "Reversible Zwitterionic Liquids, The Reaction of Alkanol Guanidines, Alkanol Amidines, and Diamines with $CO_2$," Green Chem., 12, 713-721(2010). https://doi.org/10.1039/b924790d