공업화학 (Applied Chemistry for Engineering)

  • 제35권2호
  • /
  • Pages.107-114
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  • 2024
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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열분해유/콜타르 혼합비가 피치계 활성탄의 수율 및 물성에 미치는 영향

Effect of PFO/Coal-tar Blending Ratio on Yield and Physical Properties of Pitch-based Activated Carbon

  • 유태웅 (한국화학연구원(KRICT) 수소C1가스연구센터) ;
  • 서상완 (한국화학연구원(KRICT) 수소C1가스연구센터) ;
  • 임지선 (한국화학연구원(KRICT) 수소C1가스연구센터) ;
  • 이수홍 (한국화학연구원(KRICT) 수소C1가스연구센터) ;
  • 송우진 (충남대학교 고분자공학과) ;
  • 강석창 (한국화학연구원(KRICT) 수소C1가스연구센터)
  • Tae Ung Yoo (Hydrogen & C1 Gas Research Center, Korea Research Institute of Chemical Technology) ;
  • Sang Wan Seo (Hydrogen & C1 Gas Research Center, Korea Research Institute of Chemical Technology) ;
  • Ji Sun Im (Hydrogen & C1 Gas Research Center, Korea Research Institute of Chemical Technology) ;
  • Soo Hong Lee (Hydrogen & C1 Gas Research Center, Korea Research Institute of Chemical Technology) ;
  • Woo Jin Song (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Seok Chang Kang (Hydrogen & C1 Gas Research Center, Korea Research Institute of Chemical Technology)
  • 투고 : 2024.02.15
  • 심사 : 2024.03.07
  • 발행 : 2024.04.10
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초록

피치계 활성탄의 수율 향상을 위해 열분해유와 콜타르를 혼합하여 피치를 합성하고, 합성된 피치를 물리적 활성화하여 활성탄을 제조하였다. 피치는 콜타르를 열분해유 대비 0~20%로 달리하여, 380~420 ℃에서 3 h 반응하여 합성하였다. 합성된 피치는 80~260 ℃ 사이의 연화점을 가졌고, 10~40% 범위의 수율을 나타냈다. 모든 합성온도에서 콜타르 혼합비율이 증가할수록 수율이 증가하고, 연화점이 감소함을 확인하였다. 합성된 피치 중 연화점이 230~260 ℃ 사이의 피치를 선정하여 물성을 고찰하였다. 열분해유만으로 제조된 피치에 비해 콜타르가 함유된 피치가 저비점에서 휘발분이 많고, 잔탄량이 높았다. 이는 콜타르와 열분해유의 조성에 따른 차이로, 방향족 성분이 많은 콜타르와 지방족 성분이 많은 열분해유의 영향임을 확인하였다. 선정된 피치를 관형 반응기에서 950 ℃까지 승온하고, 1 h 동안 수증기로 물리적 활성화하였다. 콜타르가 포함된 활성탄이 열분해유만으로 제조된 활성탄에 비해 높은 수율과 미세기공율을 나타냈다. 본 연구에서는 피치 원료 혼합에 의한 활성탄 수율 증가 효과를 확인하고, 콜타르 혼합 비율에 따른 물리적 활성화 특성을 고찰하였다.

In order to produce high-yield pitch-based activated carbon, pitch was synthesized by blending pyrolysis fuel oil (PFO) and coal-tar. Pitch was synthesized by varying the amount of coal-tar from 0~20% compared to PFO and reacting at 380~420 ℃ for 3 h. The synthesized pitch had a softening point between 80 and 260 ℃, and yields ranged from 10 to 40%. At all synthesis temperatures, as the coal-tar blending ratio increased, the yield increased and the softening point decreased. After considering the selected pitches (softening points: 230~260 ℃), pitches containing coal-tar were more volatile at a low boiling point and had a higher residual carbon content. This is a difference in the composition of coal-tar and PFO, and it was con- firmed that coal-tar has a lot of aromatics and PFO has a lot of aliphatics. The selected pitch was heated to 950 ℃ in a tubular reactor and physically activated with steam for 1 hour. Activated carbon containing coal-tar showed higher yield and microporosity compared to only PFO. In this study, the effect of increasing activated carbon yield by blending pitch raw materials was confirmed, and the physical activation characteristics according to the coal-tar mixing ratio were examined.

키워드

과제정보

본 연구는 산업통상자원부의 탄소산업기반조성사업(산업용 특수 활성탄소소재 부품 자립화 기술 개발: 20016795) 및 소재부품기술개발(전략 핵심소재 자립화 기술 개발 사업: 20012870)의 지원을 받아 수행하였으며 이에 감사드립니다.

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