Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Conversion Characteristics on Beef-Tallow and Sunflower Oil Blend Biodiesel and its Treatment Method to Reduce Kinematic Viscosity

우지-해바라기유 오일혼합 바이오디젤의 전환 특성과 동점도 처리에 따른 오일혼합 바이오디젤의 동점도 변화 특성

  • Woo, Duk-Gam (Research Faculty of Agriculture, Hokkaido University)
  • 우덕감 (홋카이도 대학교 농학연구소)
  • Received : 2019.11.12
  • Accepted : 2020.03.06
  • Published : 2020.03.31
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Abstract

The conversion characteristics and fuel properties for producing biodiesel (BD) by blending beef-tallow, an animal waste resource with a high-saturated fatty acid content, and sunflower-oil, a vegetable oil with a high-unsaturated fatty acid content, were investigated. For this investigation, the effects of the control factors, such as the oil-blend ratio and methanol-to-oil molar ratio, on the fatty acid methyl ester and BD production yield were also investigated. The kinematic viscosity reduction effects of BD using heating and ultrasonic irradiation were verified, and the optimal temperature of each BD-diesel fuel blend for reducing the kinematic viscosity was derived using the correlation equation. As a result, the optimal conditions for producing blended biodiesel were verified to be TASU7 and a methanol-to-oil molar ratio of 10:1. The analysis results of the fuel properties of TASU7 satisfied the BD quality standard; hence, the viability of BD blended with waste tallow as fuel was verified. The experimental results on the kinematic viscosity reduction showed that heating is more effective in reducing the kinematic viscosity because it took less time than ultrasonic irradiation, and the equipment was cheaper and more straightforward than the ultrasonic irradiation method.

포화지방산 함량이 높은 우지와 불포화지방산 함량이 높은 식물성 유지인 해바라기유를 혼합한 혼합오일의 바이오디젤 전환특성을 규명하고 연료특성을 분석하였다. 다변량분산분석을 이용하여 도출한 기여율로 각 실험변수 (메탄올/유지 몰비, 오일혼합비) 가 바이오디젤 전환에 미치는 영향을 규명하였다. 또한, 바이오디젤의 고점도 문제를 해결하기 위해 가열과 초음파 조사의 방법을 적용하여 동점도 감소효과를 검증하였다. 연료별 온도 도와 동점도간의 상관관계식을 통해 동점도 감소를 위한 연료별 최적 온도를 도출하였다. 그 결과, 바이오디젤 전환율은 오일 혼합비 TASU7, 메탄올/유지 몰비 10에서 가장 우수한 것으로 나타났고 지방산 조성에 따라 연료특성에 차이가 있었다. 또한, 우지, 해바라기유 오일 혼합 바이오디젤의 연료특성 분석 결과 바이오디젤의 품질기준을 만족하는 것으로 나타났다. 바이오디젤의 고점도를 해결하기 위한 동점도 실험 결과 가열 방법의 동점도 감소 효과가 초음파 조사 방법에 비해 우수한 것으로 나타나 간단한 가열장치로 바이오디젤의 고점도를 해결할 수 있음을 확인하였다.

Keywords

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