화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.21, No.2, 174-177, April, 2010
Export Citation
초임계 메탄올을 이용한 유채유 바이오디젤 제조에 대한 반응인자들의 영향
Influence of Reaction Parameters on Preparation of Biodiesel from Rapeseed Oil using Supercritical Methanol
임선묵, 신희용, 오세천1, 배성렬†
  • 한양대학교 화학공학과
  • 1공주대학교 환경공학과
Seon-Muk Lim, Hee-Yong Shin, Sea Cheon Oh1, and Seong-Youl Bae†
  • Department of Chemical Engineering, Hanyang University, Gyeonggi-do 426-791, Korea
  • 1Department of Environmental Engineering, Kongju National University, Chungnam 330-717, Korea
E-mail:
초록
본 연구에서는 유채유로부터 초임계 메탄올을 이용한 무촉매 전이에스터화 반응에 관한 다양한 반응인자들의 영향을 연구하였다. 온도(320∼365 ℃), 시간(0∼20 min), 압력(10∼35 MPa), 오일에 대한 메탄올의 몰 비(1 : 15∼60), 교반속도(0∼500 rpm)들이 지방산메틸에스터 함량에 어떤 영향을 미치는지에 대해 회분식 반응기를 이용하여 실험하였다. 반응온도가 증가함에 따라 지방산메틸에스터의 함량이 증가하였으나 350 ℃, 반응시간 5 min 이후부터는 감소하였다. 유채유에 대한 메탄올 몰 비가 높아질수록 지방산메틸에스터 함량이 높아졌으며, 몰 비(1 : 45)에서 20 MPa 이상의 압력에서는 함량의 변화가 거의 없었다. 100 rpm 이상의 교반속도에서는 교반의 효과가 적음을 확인할 수 있었다. 온도 335 ℃, 반응시간 10 min, 몰 비 1 : 45, 압력 20 MPa, 교반속도 250 rpm인 반응조건에서 최대 지방산메틸에스터 함량인 95%를 얻을 수 있었다.
In this study, non-catalytic transesterification from rapeseed oil using supercritical methanol was carried out by varying the operation parameters such as temperature (320∼365 ℃), time (0∼20 min), pressure (10∼35 MPa), molar ratio of oil to methanol (1 : 15∼60) and agitation speed (0∼500 rpm). In order to evaluate the effects of reaction parameters on the content of fatty acid methyl esters (FAMEs), we carried out the study using a batch reactor. The content of FAMEs increased when the temperature increased. However, the content of FAMEs decreased with temperature above 350 ℃ and time above 5 min. The content of FAMEs increased with increasing the molar ratio of methanol to oil but the content of FAMEs was slightly affected by molar ratio of oil to methanol above 1 : 45 and pressure above 20 MPa. It was found that the agitation speed above 100 rpm slightly affected the content of FAMEs. The highest content of FAMEs in biodiesel (95%) was obtained under the reaction conditions: temperature of 335 ℃, time of 10 min, pressure of 20 MPa, molar ratio of 1 : 45 (oil to methanol) and agitation speed of 250 rpm.
Keywords:biodiesel;rapeseed oil;supercritical methanol;transesterification
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