Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study on Characteristics of Residue in Liquefied Petroleum Gas using Automotive Fuel

자동차용 액화석유가스(LPG) 잔류물질의 특성 연구

  • Jang, Yoon-mi (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Park, Tae-seong (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Kang, Hyung-kyu (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Yim, Eui Soon (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Lee, Jung-min (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Na, Byung-gi (Department of Chemical Engineering, Chungbuk National University)
  • 장윤미 (한국석유관리원 석유기술연구소) ;
  • 박태성 (한국석유관리원 석유기술연구소) ;
  • 강형규 (한국석유관리원 석유기술연구소) ;
  • 임의순 (한국석유관리원 석유기술연구소) ;
  • 이정민 (한국석유관리원 석유기술연구소) ;
  • 나병기 (충북대학교 화학공학과)
  • Received : 2018.08.04
  • Accepted : 2018.09.19
  • Published : 2018.09.30
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Abstract

Recently, it was emerged to need the necessity of LPG residues management due to the finding some substances such as rust. This study is performed to investigate the characteristics of LPG residues in the production and distribution stage of LPG. For the qualitative analysis of LPG residues, it was operated to be set up the analysis conditions(the flow rate, etc) of GC-MS and was performed to analyze the component of LPG residues. From the analysis result using GC-MS, it was shown that the component of LPG residues was turned out the plasticizer to be used in the rubber manufacturing process. The inorganic components of LPG residues were analyzed using ICP-OES. At the results of inorganic analysis, it was shown that the Si element was detected, which was presumably derived from defoamers used mainly in the LPG production. Also, the P and Zn element, which are estimated to be components of grease additives used for filling facilities, were also partially detected. No trace of rusting was detected in the LPG residues in the production and distribution stages analyzed in this study. But, as plasticizers and grease additives can affect to the LPG fuel system in vehicles, it will be necessary to use the proper quality of rubber and to expand the use of low boiling grease additives.

액화석유가스(Liquefied Petroleum Gas)를 연료(Fuel)로 하는 차량의 실제 운행단계에서 시동 꺼짐 현상 등이 발생한다는 소비자 민원이 접수 된 바 있으며, 최근 유통과정에서 녹 등의 이물질로 인한 소비자 피해 가능성이 제기되어 LPG 잔류물질(Residue) 항목에 대한 관리 필요성이 대두되었다. 본 연구에서는 LPG 국내생산 및 수입사 제품과 실제로 유통되고 있는 LPG의 잔류물질 특성을 연구하였다. LPG 잔류물질을 GC-MS를 사용하여 정성분석을 하였고, ICP-OES를 이용하여 무기물 성분을 분석하였다. GC-MS 분석결과 고무 제조공정을 용이하게 하기 위해 고무에 소량 배합하는 가소제(Plasticizer) 등이 분석되었다. 또한 ICP-OES를 이용한 무기물 분석결과 주로 LPG 생산 시 사용되는 소포제 등에서 유래된 것으로 추정되는 Si와 충전시설 등에 사용되는 그리스 첨가제 성분 등으로 추정되는 P와 Zn도 일부 검출되었다. 본 연구에서 분석된 LPG 잔류물질에 대해서는 녹 등을 유발할 수 있는 성분이 검출되지 않았지만 가소제 및 그리스 첨가제 성분이 LPG 연료계통에 영향을 줄 수 있으므로 적정품질의 고무류 사용과 저비점 그리스 첨가제 사용 확대가 필요할 것으로 보인다.

Keywords

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