Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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A Study on the Quality Analysis of Biodiesel for Ship's Fuel Utilization

바이오디젤의 선박 연료 활용을 위한 품질 분석

  • Ha-seek Jang (Korea Maritime Transportation Safety Authority) ;
  • Won-ju Lee (Division of Marine System Engineering, Korea Maritime and Ocean University) ;
  • Min-ho Lee (Korea Petroleum Quality & Distribution Authority) ;
  • Yong-gyu Na (Korea Petroleum Quality & Distribution Authority) ;
  • Chul-ho Baek (Korea Maritime Transportation Safety Authority) ;
  • Beom-seok Noh (Korea Institute of Maritime and Fisheries Technology) ;
  • Jun-soo Kim (Korea Institute of Maritime and Fisheries Technology)
  • 장하식 (한국해양교통안전공단) ;
  • 이원주 (한국해양대학교 기관시스템공학부) ;
  • 이민호 (한국석유관리원 연비배출가스기술센터) ;
  • 나용규 (한국석유관리원 연비배출가스기술센터) ;
  • 백철호 (한국해양교통안전공단) ;
  • 노범석 (한국해양수산연수원) ;
  • 김준수 (한국해양수산연수원)
  • Received : 2023.06.02
  • Accepted : 2023.06.27
  • Published : 2023.06.30
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Abstract

Biodiesel is known as an environmentally friendly neutral fuel, and a policy of obligatory mixing of a certain ratio is implemented on land. In this study, to verify the feasibility of using biodiesel as a ship fuel, component analysis, metal corrosion test, and storage stability test were performed on the mixing ratios of 0 %, 5 %, 10 %, and 20 % of marine diesel and biodiesel. Component analysis evaluated a total of eight factors including density, kinematic viscosity and flash point according to ISO 8217:2017 standards and the reliability of biodiesel through metal corrosion tests and storage stability tests under atmosphere temperature and harsh conditions (60 ℃) for 180 days. Results demonstrate that component analysis satisfied the ISO 8217:2017 standard in all biodiesel mixing ratios. Furthermore, as the biodiesel mixing ratio increased, the kinematic viscosity, density, and acid value increased and the sulfur content decreased. Metal corrosion rarely occurred in the case of carbon steel, iron, aluminum, and nickel, whereas in the case of copper, corrosion occurred under the influence of oxygen-rich biodiesel under the harsh conditions (60 ℃) of 20 % biodiesel mixture. As for storage stability, discoloration, sludge formation, and fuel separation were not visually confirmed.

바이오디젤은 중립연료로써 친환경 연료로 알려져 있으며, 육상에서는 일정 비율을 의무 혼합하는 정책을 시행하고 있다. 본 연구에서는 바이오디젤의 선박 연료로써의 사용 가능성을 검증하기 위해 선박용 경유와 바이오디젤의 혼합비율 0 %, 5 %, 10 %, 20 %에 대해 성분 분석, 금속 부식성 실험, 저장 안정성 실험을 수행하였다. 성분 분석은 ISO 8217:2017 기준에 따라 밀도, 동점도, 인화점 등 총 8가지를 평가하였으며, 180일 동안 상온과 가혹 조건(60 ℃)에서 금속 부식성 실험과 저장 안정성 실험을 통해 바이오디젤 신뢰성을 검증하였다. 연구 결과, 성분 분석은 바이오디젤 모든 혼합비율에서 ISO 8217:2017 기준을 만족하였으며, 바이오디젤 비율에 따라 동점도, 밀도, 산값은 혼합비율이 높아질수록 높게 나타났으며, 황분은 혼합비율이 높아질수록 낮게 나타났다. 금속 부식성은 탄소강, 철, 알루미늄, 니켈의 경우 부식이 거의 발생하지 않았으나, 구리의 경우 60 ℃ 환경 바이오디젤 20 % 혼합에서 산소가 풍부한 바이오디젤의 영향으로 부식이 발생하였다. 저장 안정성은 모든 바이오디젤 혼합비율을 180일 동안 상온과 가혹 조건에서 저장한 결과, 변색, 슬러지 발생, 연료 분리가 육안으로 확인되지 않았다.

Keywords

Acknowledgement

본 논문은 해양수산부의 지원으로 "2022년 친환경 신기술 해상실증을 위한 퇴역 관공선 개조·운영"에 의해 수행된 연구입니다.

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