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바이오매스로부터 급속 열분해를 통한 바이오오일의 생산기술 연구동향
김재곤,박조용,임의순,하종한,Kim, Jae-Kon,Park, Jo Yong,Yim, Eui Soon,Ha, Jong Han 한국응용과학기술학회 2014 한국응용과학기술학회지 Vol.31 No.3
본 논문에서는 바이오매스로부터 급속열분해를 통해 난방용, 발전용 및 수송용 연료로 사용하기 위해 바이오오일을 생산하는 기술개발 현황을 나타내었다. 바이오매스를 작은 규모의 액체연료로 전환하기 위해 가장 효율적인 방법 중 하나는 급속열분해이다. 급속열분해를 통한 바이오오일은 $450^{\circ}C{\sim}600^{\circ}C$ 온도에서 바이오매스가 신속히 열분해 되어 증기 급냉를 위해 외부 산소가 없는 조건에서 생산된다. 이 바이오오일은 최초 건조 바이오매스 기준 최대 75 무게%까지 생산할 수 있지만, 일반적으로 60-75 무게% 수준이 적합하다. 본 연구에서는 바이오매스의 원료특성, 바이오오일 생산원리, 바이오오일의 특성 및 활용분야에 대한 최근의 개발현황을 살펴보았다. The paper provides a review on bio-oil production technology from biomass by using fast pyrolysis to use heating fuel, power fuel and transport fuel. One of the most promising methods for a small scale conversion of biomass into liquid fuels is fast pyrolysis. In fast pyrolysis, bio-oil is produced by rapidly heating biomass to intermediate temperature ($450{\sim}600^{\circ}C$) in the absence of any external oxygen followed by rapid quenching of the resulting vapor. Bio-oil can be produced in weight yield maximum 75 wt% of the original dry biomass and bio-oils typically contain 60-75% of the initial energy of the biomass. In this study, it is described focusing on the characterization of feedstock, production principle of bio-oil, bio-oil's property and it's application sector.
바이오매스 기반 합성가스를 이용한 BTL 휘발유분의 연료적 특성 연구
김재곤(Jae-Kon Kim),전철환(Cheol-Hwan Jeon),임의순(Eui Soon Yim),정충섭(Choong-sub Jung),이상봉(Sangbong Lee),이윤제(YunJe Lee),강명진(Myung-Jin Kang) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Biomas-To-Liqufied(BTL) can be used for conventional diesel engines, pure or blended with conventional diesel due to its similar physical properties to diesel. BTL fuel was first produced by Fischer-Trosch(F-T) process with syngas(H2/CO), Fe based catalyst in low temperature condition(240 ℃) in Korea. This study was focused on quality characteristics of BTL gasoline to use transport fuel in Korea. BTL gasoline showed high content of hydrocarbon between C? and C₁?, compared to automotive gasoline. It also was evaluated more high distillation range than automotive gasoline.
김재곤(Jae-Kon Kim),임의순(Eui Soon Yim),정충섭(Choong-sub Jung) 한국가스학회 2014 한국가스학회지 Vol.18 No.5
일반적으로 황분계 부취제는 연료가스로 인한 가스중독, 발화, 폭발 등의 사고를 방지하고, 배출가스에 의해 연료 가스 누출의 즉각적으로 손쉽게 검출할 수 있도록 LPG, 그리고 도시가스와 같은 연료가스에 첨가 사용하고 있다. 본 연구에서는 기존의 황을 함유한 가스용 부취제를 대체하여 연료의 저황분화와 금속 부식성을 낮출 수 있는 LPG 연료용 비황분계 부취제 개발을 위하여 실험하였다. 비황분계 부취제는 황을 함유하지 않는 12개의 부취물질을 선정하였으며, 직접 관능법에 의한 취질과 취기 평가를 실험하였다. 최종 선정된 혼합 부취물질은 methyl isovalerate , methyl acrylate , 2-ethyl-3-methyl pyrazine이며, 이때 조성비는 50% : 40% : 10% 이다. 최종 비황분계 부취제(K-Petro S-Free)는 LPG 연료에 40 wt ppm 혼합하여 품질평가, 금속 부식성 평가 그리고 장기 안정성 평가를 실험하였다. 이 때 LPG 연료용 비황분계 부취제는 국내 LPG 연료의 품질기준을 모두 만족하였다. 또한 금속에 대한 부식성에는 영향이 없으며, 60일간의 장기 안정성 평가에서 LPG연료의 조성에 영향을 주지 않았다. 따라서 최종 선정된 비황분계 부취제(K-Petro S-Free)는 LPG 연료의 첨가제로서 가능성을 보여주고 있다. In general, sulfur containing odorants are added to fuel gases, such as LPG, and city gas, to prevent gas poisoning, ignition, explosion, or other accident caused by fuel gases, and to enable immediate and easy detection of fuel-gas leakage by emitting an offensive smell. In this study, sulfur free odorant for low sulfur fuel and prevention of metal corrosion were developed to replace current sulfur containing odorant for gas fuel. They were selected from 12 odorant containing non-sulfur organic compounds and evaluated by odor olfactory method (odor quality, odor intensity). Finally, selected mixture odorants were methyl isovalerate, methyl acrylate , 2-ethyl-3-methyl pyrazine with blending ratio of 50% : 40% : 10%. Final Sulfur free odorant was added 40 wt ppm in LPG fuels and evaluated fuel quality characteristics, metal corrosion test and long term stability of LPG fuel. It were limit in current LPG fuel standard in fuel quality characteristics. Final Sulfur free odorant also had no influence on metal corrosion and long term stability test with 60 days by adding in LPG fuels. Finally, they were shown to be warning agent candidates to reduce sulfur content and metal corrosion for LPG fuel.
국내 유통단계별 자동차용 LPG 연료의 품질특성과 잔류물질 특성 연구
김재곤(Jae-Kon Kim),연주민(Ju min youn),임의순(Eui Soon Yim),김종렬(Jong-Ryeol Kim),정충섭(Chung sup Jung),신성철(Seong-Cheol Shin),김동길(Dong Kil Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In general, the quality of LPG is determined by composition, sulfur content, vapor pressure, density, residues, copper corrosion and water content. The quality characteristics and analysis of residues in circulated autogas LPG was reported in domestic. Especially, the residues amount in LPG is an important for quality control because it can accumulate in pipes, vaporizers, instruments, regulators, and injectors, resulting in mal-flow and misreading. The residue in LPG is extracted on 2 L scale into dichloromethane and it is analyzed by gas chromatography-mass spectrometry (GC-MS), for components. The components of residues in LPG is detected 62 chemicals with C3~C28. It was presumed that this residue had been originated from LPG, parts of an automobile and lubricant oil in circulation.
김재곤 ( Jae Kon Kim ),전철환 ( Cheol Hwan Jeon ),임의순 ( Eui Soon Yim ),정충섭 ( Choong Sub Jung ) 한국유화학회 2011 한국응용과학기술학회지 Vol.28 No.4
Hydrotreated biodiesel(HBD) is paraffinic bio-based liquid, with the chemical structure CnH2n+2, originating from vegetable oil(the process can also be applied to animal fat). The oil or fat is treated in a number of process, the most important being hydrogenation, in order to create a bio-based liquid diesel fuel. During the hydrogenation, oxygen is removed from the triglyceride and converted into water. Propane is formed as a by product and can be combusted and used for energy production. HBD can be used in conventional diesel engines, pure or blended with conventional diesel, due to its similar physical properties to diesel. This study reports the quality characteristics with chemical and physical properties as an alternative diesel fuel. Especially, HBD showed higher cetane value and number than FAME, and it is consisted of C15-C18 n-paraffinic compounds. We also describes quality characteristics of HBD blends(2, 5, 10, 20, 30, 40, 50 vol%) in automotive diesel. HBD blends(max. 20 vol%) were the limit by the Korean specification due to poor low temperature characteristics.