Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study of Emulsion Fuel of Cellulosic Biomass Oil

목본계 바이오매스오일의 에멀젼 연료화 연구

  • Kim, Moon-Chan (Department of Environmental Engineering,Cheongju University)
  • 김문찬 (청주대학교 환경공학과)
  • Received : 2016.09.26
  • Accepted : 2016.12.29
  • Published : 2016.12.30
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Abstract

Water soluble oil was obtained by pyrolysis of biomass. The characteristics of emulsified fuel by mixing water soluble oil and MDO(marine diesel oil) and engine emissions were studied with engine dynamometer. Saw dust was used as biomass. Water soluble oil was obtained by condensing of water and carbon content with pyrolysis of saw dust at $500^{\circ}C$. Emulsion fuel was obtained by emulsifying MDO and water soluble oil by the water soluble oil mixing ratio of 10 to 20% of MDO. Exhaust gas detection was performed with engine dynamometer. While combustion, micro-explosion took place in the combustion chamber by water in the emulsion fuel, emulsion fuel scattered to micro particles and it caused to smoke reduction. The heat produced from water vapour reduce the temperature of internal combustion chamber and it caused to inhibition of NOx production. It can be verified by the lower exhaust temperature of each ND-13 mode using emulsion fuel than that of MDO fuel. The NOx and smoke concentration were reduced by increasing water soluble oil content in the emulsion fuel. The power also decreased according to the increment of water soluble oil content of emulsion fuel because emulsion fuel has low calorific value due to high water content than MDO. As a result of ND-13 mode test with 20% bio oil content, it was achieved 25% reduction in NOx production, 60% reduction in smoke density, and 15% reduction in power loss.

본 연구는 바이오매스를 열분해하여 생성된 수상오일(water soluble oil)을 얻었다. MDO(Marine Diesel Oil)와 수상오일을 유화시켜 생성된 에멀젼 연료의 특성과 배출가스를 연구 하였다. 바이오매스로는 톱밥을 사용하였고 $500^{\circ}C$에서 열분해하여 생성된 물과 탄화수소를 응축시켜서 수상오일을 얻었다. 수상오일을 MDO에 10~20% 까지 혼합 후 유화시켜 에멀젼 연료를 만들었다. 엔진 배출가스 측정은 엔진 dinamometer로 실시하였다. 유화연료는 연소실내에서 미세폭발을 일으켜 연료를 잘게 쪼개어 주어 smoke를 감소시킨다. 그리고 물이 연소실내의 기화열을 빼앗아 연소실 내부의 온도를 낮추어 NOx 생성을 억제하는 효과를 갖는다. ND-13모드의 각 모드별 배출가스온도가 MDO에 비해 유화연료를 사용했을 때 낮게 나온 것으로 뒷받침 될 수 있었다. 유화연료의 함수율이 증가함에 따라 NOx와 smoke의 배출량은 줄어들었으며, 출력도 함수율 증가에 따라 유화연료 자체의 발열량 감소로 인하여 줄어든 것으로 판단된다. ND-13모드에서 MDO 유화연료를 시험한 결과 바이오매스오일 함유량 20%인 유화연료의 NOx 감소량은 약 25%, smoke의 총감소량은 약 60%, 그리고 약 15%의 출력손실을 확인하였다.

Keywords

References

  1. World Energy Outlook 2011(IEA), Frost & Sullivan, (2011).
  2. World Energy Outlook 2010(IEA), Frost & Sullivan, (2010).
  3. Ministry of Knowledge Economy, " Biomass Strategy Roadmap," (2012).
  4. Ministry of Knowledge Economy, "The 3rd Renewable Energy Technology Development and Utilization. Supply Master Plan," (2013).
  5. Andrea, B., Renxian, L., Konstantinos, B., "Influence of Water-Diesel Fuel Emulsions and EGR on Combustion and Exhaust Emissions of Heavy Duty Diesel Engines Equipped with Common-Rail Injection System," 2003-01-3146.
  6. Hironori, S., Koji, U., "Feasibility Study on the Utilization of Water-in-Oil Type Emulsified Fuels to Small DI Diesel Engines," 2011-9602.
  7. Anja Oasmaa and Cordner Peacocke, "Properties and Fuel use of Biomass derived Fast Pyrolysis Liquids," Cordner Peacocke Conversion and Resource Evaluation Ltd., vtt publication 731, ISBN 978-951-38-7384-4.
  8. J. T. Davies. E. K. Rideal : Interfacial Phenomena 2nd. ed., 371, Academic Press, New York, (1963).
  9. C. G. Jo, etc., "The Impact on the Flow Characteristics of the Higher Alcohol and a Higher Fatty Acid O/W Emulsion," Journal of the Society of Cosmetic Scientists, 35(2), 103-104, (2009).
  10. S. M. Oh, "low-emission Diesel Engines using Fuel Emulsion Technology , Machinery and Materials", 12th ed., vol II, 47-50, (2000).
  11. P. Becher, "Emulsions : Theory and Practice, Reinhold Publishing", 267, New York(1965).
  12. P. Becher et al, "Encyclopedia of Emulsion Technology", vol. I, M. Dekker Inc., 94-127, (1983).
  13. J. Kim and H. Kim, "Emulsion Viscosity with Oil Polarity and Interpretation by Organic Conceptual Diagram," J. Korean Oil Chem. Soc., Vol.31, No.4, December, 623-627, (2014). https://doi.org/10.12925/jkocs.2014.31.4.623

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  1. 바이오에멀젼 연료의 연소 특성 vol.35, pp.4, 2018, https://doi.org/10.12925/jkocs.2018.35.4.1421