Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Mixing Characteristics of Sequential Blending with DME and LPG in Mixing Drum

DME-LPG 순차 혼합시 저장탱크 내의 혼합특성

  • Cheon, Suk Hoon (Graduate school of energy and environment, Seoul National University of Science and Technology) ;
  • Kim, Cha Hwan (Graduate school of energy and environment, Seoul National University of Science and Technology) ;
  • Shin, Dong Woo (Graduate school of energy and environment, Seoul National University of Science and Technology) ;
  • Kim, Lae Hyun (Graduate school of energy and environment, Seoul National University of Science and Technology) ;
  • Lee, Hyun Chan (DME Research Team, R&D Division, Korea Gas Corporation) ;
  • Baek, Young Soon (DME Research Team, R&D Division, Korea Gas Corporation)
  • 천석훈 (서울과학기술대학교 에너지환경대학원/산업대학원) ;
  • 김차환 (서울과학기술대학교 에너지환경대학원/산업대학원) ;
  • 신동우 (서울과학기술대학교 에너지환경대학원/산업대학원) ;
  • 김래현 (서울과학기술대학교 에너지환경대학원/산업대학원) ;
  • 이현찬 (한국가스공사 연구개발원 DME 연구개발) ;
  • 백영순 (한국가스공사 연구개발원 DME 연구개발)
  • Received : 2011.11.23
  • Accepted : 2012.02.12
  • Published : 2012.06.01
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Abstract

To study characteristics of DME and Propane blended fuel in mixing drum as time passed, mixing experiment of two components was performed. After 20 wt% of DME and 80 wt% of Propane were injected into mixing drum sequentially, and the mixture ratio of blended fuel was analyzed at several sampling ports. Consequently, DME and Propane were not easily mixed and DME was sunk to the bottom of the mixing drum by the density difference. The daily rate of DME ingredient increase was 0.2-0.3 wt%, and it took over 500 hours until two of them were mixed uniformly. And after recirculation of blended fuel in mixing drum, DME and Propane were mixed immediately and uniformly.

DME 및 LPG 혼합연료에 대한 혼합도 분석 실험을 수행하였다. DME 20 wt%와 LPG(주성분 프로판) 80 wt%를 탱크에 순차적으로 주입하여 시간 경과에 따라 탱크의 각 측정부에서의 농도를 측정하였다. 먼저 DME가 주입되고 그 후에 프로판이 주입되면서 DME의 일부는 혼합이 되나 일부는 혼합이 되지 않고 밀도차에 의해서 탱크 하부로 가라앉게 되는 층상화 현상이 발생하였다. 1일 경과 시 약 0.2~0.3 wt%의 증가비율로 두 연료가 혼합되어 완전히 균일하게 되기까지 약 500시간 이상이 소요되었다. 또한 재순환 펌프를 가동하여 탱크 내 연료를 순환 시킨 후 혼합 연료의 성분을 측정한 실험에서는 DME와 프로판이 균일하게 혼합됨을 확인하였다.

Keywords

Acknowledgement

Grant : DME-LPG 혼합연료의 저장탱크에서 조성분포 측정 연구

Supported by : 한국가스공사

References

  1. Cho, W. J. and Kim, S. S., "Current Status and Technical Development for Di-Methyl Ether as a New and Renewable Energy," Korean J. Chem. Eng., 20(4), 355-362(2009).
  2. Arcoumanis, C., Bae, C., Crookes, R. and Kinoshita, E., "The Potential of Di-Methyl Ether(DME) as an Alternative Fuel for Compression-Ignition Engines: A review," Fuel., 87, 1014-1030(2008). https://doi.org/10.1016/j.fuel.2007.06.007
  3. Baek, Y. S., Cho, W. J. and Lee, H. C., "The Status of DME Development and Utilization as a Fuel," KIC News., 13(2), 1-11(2010).
  4. Baek, Y. S., Cho, W. J. and Oh, Y. S., "The Status of DME Development and Utilization as a Fuel," J. Energy Eng., 16(2), 73-82(2007).
  5. Ahn, J. U., Hwang, H. C., Kim, Y. G. and Kwon, J. R., "An Experimental Study on Thermal Efficiency Characteristics with Propane-DME Mixture Ratio for Residential Gas Range," KIGAS, 12(3), (2008).
  6. Ahn, J. U., Chung, T. Y., Hwang, H. C. and Kim, Y. G., "A Study on the Combustion Characteristics of Butane-DME Mixture Gas," J. Energy Eng., 143-146(2007).
  7. Lee, S. H., Oh, S. M., Choi, Y., Kang, K. Y., Choi, W. H. and Cha, K. O., "The Effect of N-Butane and Propane on Performance and Emissions of a SI Engine Operated with LPG-DME Blended Fuel," KSAE., 08(s0095), 583-588(2008).
  8. McCabe, W. L., Smith, J. C. and Harriott, P., Unit Operations of Chemical Engineering, 6th ed., McGraw-Hill Korea, 513-515(2001).
  9. DME Data Book; LPG Research Laboratory KHK, Japan(2006).
  10. Baek, Y. S. and Lee, H. C., "Development for Demonstration and Test of DME Fuel," Project No. 2007CCC11P051000, Korea Gas Corporation(2009).