Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Determination Method of Hydrocarbon Compounds in DME-LPG Blending Fuels by Gas Chromatography with Deans Switching

Deans Switching을 이용한 가스크로마토그래피에서 DME-LPG 혼합연료의 탄화수소 화합물 분석방법

  • Youn, Ju Min (Green Technology R&D Center, Korea Institute of Petroleum Management) ;
  • Park, Cheon Kyu (Green Technology R&D Center, Korea Institute of Petroleum Management) ;
  • Yim, Eui Soon (Green Technology R&D Center, Korea Institute of Petroleum Management) ;
  • Jung, Choong Sub (Green Technology R&D Center, Korea Institute of Petroleum Management)
  • 연주민 (한국석유관리원 녹색기술연구소) ;
  • 박천규 (한국석유관리원 녹색기술연구소) ;
  • 임의순 (한국석유관리원 녹색기술연구소) ;
  • 정충섭 (한국석유관리원 녹색기술연구소)
  • Received : 2011.09.01
  • Accepted : 2011.10.04
  • Published : 2012.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The new qualitative and quantitative analytical method for hydrocarbon compounds in DME-LPG blending fuel, mixing dimethyl ether (DME) with liquefied petroleum gas (LPG), by using gas chromatography (GC) was investigated. It is difficult to analyze all components of DME-LPG blending fuel by using single column in GC due to consisting of the non-polar LPG and the polar DME which is oxygen-containing compound. Therefore, it has been introduced the Deans switching system, which are useful for analyzing mixtures of a very different nature and/or target analytes in very complex matrix. This technique is to control the pressure between two columns and to selectively change the path of effluent flows to either one of two columns. As a result, we found that DME and LPG can be completely separated at the different columns and the determination of all hydrocarbon compounds in DME-LPG blending fuel can be achieved to this method qualitatively and quantitatively during the operation of one injection. In addition, this method can be applied to the determination of trace components of by-product, such as methanol, methyl formate and ethyl methyl ether, which will be derived from DME synthesis process.

액화석유가스(liquefied petroleum gas, LPG)에 디메틸에테르(dimethyl ether, DME)가 첨가된 DME-LPG 혼합연료의 탄화수소 화합물을 가스크로마토그래피(GC)를 이용하여 정성 정량분석하는 새로운 분석방법을 연구하였다. DME-LPG 혼합연료는 함산소화합물(oxygen-containing compound)인 극성의 DME와 비극성물질인 LPG로 구성되어 있기때문에 하나의 GC 컬럼에서 모든 성분을 완전히 분리하기가 어렵다. 따라서 서로 다른 성질의 화합물이나 아주 복잡한 화합물 중 목표물질의 분석에 응용되고 있는 Deans switching 시스템을 도입하였다. 상기 시스템은 두 개의 GC 컬럼 사이에 유체의 압력 제어를 통하여 용출되는 물질의 흐름 방향을 변경시켜주는 기술로서, 이 방법을 이용하여 DME와 LPG를 서로 다른 컬럼에서 분리하여 한번의 시료 주입으로 DME-LPG 혼합연료의 모든 탄화수소 화합물을 정성 정량분석할 수 있었다. 또한 DME 합성과정에서 부산물로 생성될 수 있는 메탄올, 포름산메틸, 에틸메틸에테르 같은 미량성분까지 분석이 가능하였다.

Keywords

Acknowledgement

Grant : DME-DMELPG 혼합연료 적용을 위한 설비 및 차량에 대한 기술개발

Supported by : 지식경제부

References

  1. Semelsberger, T. A., Borup, R. L. and Greene, H. L., "Dimethyl Ether (DME) as an Alternative Fuel," J. Power Sources, 156, 497-511(2006). https://doi.org/10.1016/j.jpowsour.2005.05.082
  2. Marchionna, M., Patrini, R., Sanfilippo, D. and Migliavacca, G., "Fundamental Investigations on Di-methyl ether (DME) as LPG Substitute of Make-up for Domestic Uses," Fuel Proc. Tech., 89, 1255-1261(2008). https://doi.org/10.1016/j.fuproc.2008.07.013
  3. Marchionna, M., "Behavior of Mixtures of Di-Methyl-Ether (DME) and LPG," AEGPL Congress, Wien(2009).
  4. Arcoumanis, C., Bae, C. S., 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
  5. DME Handbook, Japan DME Forum (2007).
  6. Chen, W., "Application and Development of DME in China," 3rd International DME Conference & 5th Asian DME Conference, Shanghai(2008).
  7. Huang, Z., Zhang, W., Fang, J. and Qiao, X., "Shanghai DME Bus Demonstration: Recent Progress," 4th International DME Conference, Stockholm(2010).
  8. Salomonsson, P., "BioDME Project Status Update," 4th International DME Conference, Stockholm(2010).
  9. Naqvi, M., Yan, J. and Froling, M., "Bio-Refinery System of DME or $CH_4$ Production from Black Liquor Gasification in Pulp Mills," Bioresour. Tech., 101, 937-944(2010). https://doi.org/10.1016/j.biortech.2009.08.086
  10. Cho, W. J., Song, T. Y., Mitsos, A., McKinnon, J. T., Ko, G. H., Tolsma, J. E., Denholm, D. and Park, T., "Optimal Design and Operation of a Natural Gas Tri-Reforming Reactor for DME Synthesis," Catal. Today, 139, 261-267(2009). https://doi.org/10.1016/j.cattod.2008.04.051
  11. Commercial Propane and Butane - Analysis by Gas Chromatography, ISO 7941(1988).
  12. Standard Test Method for Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures by Gas Chromatography, ASTM D 2163(2007).
  13. Zatorski, L. W. and Cichowlas, A., "A Column Packing for Isothermal Gas Chromatographic Analysis of $C_1-C_5 $ Paraffins and Monoolefins and Dimethyl Ether," Chromatographia, 14, 277-278 (1981). https://doi.org/10.1007/BF02259265
  14. Deans, D. R., "A New Technique for Heart Cutting in Gas Chromatography [1]," Chromatographia, 1, 18-22(1968). https://doi.org/10.1007/BF02259005
  15. Blomberg, J. and Brinkman, U. T., "Practical and Theoretical Aspects of Designing a Flame-Ionization Detector / Mass Spectrometer Deans' Switch Pressure-Flow Relations in Gas Chromatography-Detector Interfaces using Vacuum-Outlet Conditions," J. Chromatography A, 831, 257-265(1999). https://doi.org/10.1016/S0021-9673(98)00955-8
  16. Liquid Petroleum Products-Unleaded Petrol-Determination of Organic Oxygenate Compounds and Total Organically Bound Oxygen Content by Gas Chromatography Using Column Switching, EN 13132(2000).
  17. AC OxyTracer Analyzer on 7890 GC, Manual part number 23070.020 version 2004/1.0.
  18. Bollon, F., "DME Global Regulations & Standards," 4th International DME Conference, Stockholm(2010).

Cited by

  1. Feasibility Test of LPG Vehicles by Using DME-LPG Blends vol.24, pp.4, 2015, https://doi.org/10.5855/ENERGY.2015.24.4.033