Methane Recovery and Carbon Dioxide Stripping by MEA Solution the Autocirculation Bubble Lift Column Reactor

내부순환식 기포탑 반응기 상에서 MEA (monoethanolamine) 용액에 의한 이산화탄소 분리 및 메탄회수

  • Lee, In-Hwa (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University) ;
  • Kim, Sun-Yil (Department of Environmental Engineering, Chosun University) ;
  • Park, Ju-Young (Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University)
  • 이인화 (조선대학교 환경공학과 BK21 바이오가스기반 수소생산 전문인력양성사업팀) ;
  • 김선일 (조선대학교 환경공학과) ;
  • 박주영 (조선대학교 환경공학과 BK21 바이오가스기반 수소생산 전문인력양성사업팀)
  • Received : 2007.02.21
  • Accepted : 2007.04.17
  • Published : 2007.06.10

Abstract

For the simultaneous methane recovery and $CO_2$-stripping, we have been developed dual vent auto circulation bubble lift column reactor, and evaluate optimum conditions for monoethanolamine (MEA) solutions as a $CO_2$ absorbent. At the 5 wt% MEA solution, we investigated the pH change during $CO_2$-stripping and absorption reaction, $CO_2$-stripping rate with reaction time, methane recovery efficiency for various inflow rates of air, $CO_2$-stripping rate for flow liquid over flow height, and $CO_2$-stripping dependency on the temperature of absolvent solutions. The suggested optimum conditions for $CO_2$ recovery with MEA in the dual vent auto circulation bubble lift column reactor were 40 mm over flow liquid height, 1.5 L/min of air inflow rate, and $25^{\circ}C$ of absorbent solution temperature.

Keywords

carbon dioxide;methane;autocirculation bubble lift column reactor;gas purification;MEA (monoethanolamine)

Acknowledgement

Supported by : 조선대학교

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