Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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0.1 MW Test Bed CO2 Capture Studies with New Absorbent (KoSol-5)

신 흡수제(KoSol-5)를 적용한 0.1 MW급 Test Bed CO2 포집 성능시험

  • Lee, Junghyun (Creative Research Laboratory, KEPCO Research Institute) ;
  • Kim, Beom-Ju (Creative Research Laboratory, KEPCO Research Institute) ;
  • Shin, Su Hyun (Creative Research Laboratory, KEPCO Research Institute) ;
  • kwak, No-Sang (Creative Research Laboratory, KEPCO Research Institute) ;
  • Lee, Dong Woog (Creative Research Laboratory, KEPCO Research Institute) ;
  • Lee, Ji Hyun (Creative Research Laboratory, KEPCO Research Institute) ;
  • Shim, Jae-Goo (Creative Research Laboratory, KEPCO Research Institute)
  • 이정현 (한전전력연구원 창의미래연구소) ;
  • 김범주 (한전전력연구원 창의미래연구소) ;
  • 신수현 (한전전력연구원 창의미래연구소) ;
  • 곽노상 (한전전력연구원 창의미래연구소) ;
  • 이동욱 (한전전력연구원 창의미래연구소) ;
  • 이지현 (한전전력연구원 창의미래연구소) ;
  • 심재구 (한전전력연구원 창의미래연구소)
  • Received : 2016.05.10
  • Accepted : 2016.07.11
  • Published : 2016.08.10
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Abstract

The absorption efficiency of amine $CO_2$ absorbent (KoSol-5) developed by KEPCO research institute was evaluated using a 0.1 MW test bed. The performance of post-combustion technology to capture two tons of $CO_2$ per day from a slipstream of the flue gas from a 500 MW coal-fired power station was first confirmed in Korea. Also the analysis of the absorbent regeneration energy was conducted to suggest the reliable data for the KoSol-5 absorbent performance. And we tested energy reduction effects by improving the absorption tower inter-cooling system. Overall results showed that the $CO_2$ removal rate met the technical guideline ($CO_2$ removal rate : 90%) suggested by IEA-GHG. Also the regeneration energy of the KoSol-5 showed about $3.05GJ/tonCO_2$ which was about 25% reduction in the regeneration energy compared to that of using the commercial absorbent MEA (Monoethanolamine). Based on current experiments, the KoSol-5 absorbent showed high efficiency for $CO_2$ capture. It is expected that the application of KoSol-5 to commercial scale $CO_2$ capture plants could dramatically reduce $CO_2$ capture costs.

한전 전력연구원에서 개발한 고효율 아민계 습식 $CO_2$ 흡수제(KoSol-5)를 적용하여 0.1 MW급 Test Bed $CO_2$ 포집 성능시험을 수행하였다. 500 MW급 석탄화력발전소에서 발생되는 연소 배가스를 적용하여 하루 2톤의 $CO_2$를 처리할 수 있는 연소 후 $CO_2$ 포집기술의 성능을 확인하였으며 또한 국내에서는 유일하게 재생에너지 소비량을 실험적으로 측정함으로써 KoSol-5 흡수제의 성능에 대한 신뢰성 있는 데이터를 제시하고자 하였다. 그리고 주요 공정변수 운전 및 흡수탑 인터쿨링 효율 향상에 따른 에너지 저감 효과를 테스트하였다. 흡수탑에서의 $CO_2$ 제거율은 국제에너지기구 산하 온실가스 프로그램(IEA-GHG)에서 제시하는 $CO_2$ 포집기술 성능평가 기준치($CO_2$ 제거율: 90%)를 안정적으로 유지하였다. 또한 흡수제(KoSol-5)의 재생을 위한 스팀 사용량(재생에너지)은 $2.95GJ/tonCO_2$가 소비되는 것으로 산출되었는데 이는 기존 상용 흡수제(MEA, Monoethanol amine)의 평균 재생에너지 수준(약 $4.0GJ/tonCO_2$) 대비 약 26% 저감 된 수치이다. 본 연구를 통해 한전 전력연구원에서 개발한 KoSol-5 흡수제 및 $CO_2$ 포집 공정의 우수한 $CO_2$ 포집 성능을 확인할 수 있었고, 향후 본 연구에서 성능이 확인된 고효율 흡수제(KoSol-5)를 실증급 $CO_2$ 포집플랜트에 적용할 경우 $CO_2$ 포집비용을 크게 낮출 수 있을 것으로 기대된다.

Keywords

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