화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.57, No.3, 420-424, June, 2019
DOI10.9713/kcer.2019.57.3.420  Export Citation
파일럿 규모의 공정에서 CO2가 함유된 합성가스로부터 합성천연가스(SNG) 생산
SNG Production from CO2-Rich Syngas in a Pilot Scale SNG Process
강석환†, 류재홍, 김진호, 김효식, 유영돈, 김준우1, 고동준1, 강 용2
  • 고등기술연구원 플랜트엔지니어링센터, 17180 경기도 용인시 처인구 백암면 고안로 51번길 175-28
  • 1포항산업과학연구원, 57801 전라남도 광양시 금호로 187-12
  • 2충남대학교 응용화학공학과, 34134 대전광역시 유성구 대학로 99
Suk-Hwan Kang†, Jae-Hong Ryu, Jin-Ho Kim, Hyo-Sik Kim, Young-Don Yoo, Jun-Woo Kim1, Dong-Jun Koh1, and Yong Kang2
  • Plant Engineering Center, Institute for Advances Engineering, 175-28 Goan-ro 51beon-gil, Baegam-myeon, Yongin-si, Gyeonggi-do, 17180, Korea
  • 1Research Institute of Industrial Science and Technology (RIST), 187-12 Geumho-ro, Gwangyang-si, Jeollanam-do, 57801, Korea
  • 2Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
E-mail:
초록
포항산업과학연구원(RIST, Research Institute of Industrial Science & Technology)-고등기술연구원(IAE, Institute for Advanced Engineering)에서 제안한 합성천연가스(Synthetic Natural Gas, SNG) 제조공정(3개의 단열반응기와 1개의 등온반응기로 구성됨)에서, 합성가스와 함께 스팀을 공급함으로써 메탄화반응과 수성가스전환 반응을 동시에 반응시켜 촉매층의 온도와 촉매 비활성화를 제어하였다. SNG 공정개발을 위해 본 연구에서는, 포항산업과학연구원에서 제조한 니켈계 촉매를 사용하여 낮은 H2/CO 비(CO2 22% 포함) 조건에서의 메탄화반응 특성을 평가하였다. 운전조건(1차 단열반응기의 H2O/CO 비, 4차 등온반응기의 운전온도 범위 등)은 이전의 연구 결과를 반영하였으며, 동일한 조건을 유지하면서 파일럿 규모의 SNG 공정을 운전하였다. 그 결과, 파일럿 규모의 SNG 공정은 안정적으로 운전되었으며, CO 전환율 100%, CH4 선택도는 96.9% 그리고 CH4 생산성은 660ml/gcat·h의 값을 얻었다.
In SNG (synthetic natural gas) process by proposed RIST(Research Institute of Industrial Science & Technology)-IAE(Institute for Advanced Engineering) (including three adiabatic reactors and one isothermal reactor), the methanation reaction and water gas shift (WGS) reaction take place simultaneously, and the supply of steam with syngas might control the temperature in catalyst bed and deactivate the catalyst. In this study for development of SNG process, the characteristics of the methanation reaction with a Ni-based catalyst by prepared RIST and using a low H2/CO mole ratio (including CO2 22%) are evaluated. The operating conditions (H2O/CO ratio of the 1st adiabatic reactor, operating temperature range of 4th isothermal reactor, etc.) were reflected the results from previous studies and in the same condition a pilot scale SNG process is carried out. As a results, the pilot scale SNG process is stable and the CO conversion and CH4 selectivity are 100% and 96.9%, respectively, while the maximum CH4 productivity is 660 ml/gcat·h.
Keywords:Synthetic natural gas (SNG);Methanation;Water gas shift (WGS);Adiabatic reactor;Isothermal reactor
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