GC-MS determination of low hydrocarbon species (C1-C6) from a diesel partial oxidation reformer

U. Elghawi, K. Theinnoi, S. Sitshebo, A. Tsolakis, M. L. Wyszynski, H. M. Xu, R. F. Cracknell, R. H. Clark, A. Mayouf

Research output: Journal PublicationArticlepeer-review

9 Citations (Scopus)

Abstract

The partial oxidation (POx) reforming of Ultra Low Sulphur-Diesel (ULSD), rapeseed methyl ester (RME) - biodiesel and Fischer-Tropsch synthetic diesel fuels (SD) were studied by using a fixed-bed reactor. The ease of reforming the three fuels was first examined at different O/C feed ratios at constant gas hourly space velocity (GHSV) of 35 k h-1 over a prototype monolith catalyst (1%Rh/CeO2-ZrO2). The hydrocarbon species (C1-C6) produced in the reformer were analyzed using direct gas injection gas chromatography mass spectrometry (GC-MS). Under the same O/C ratios for 35 k h-1 the fuels conversion and process efficiency was dependent on the fuel type, and followed the general trend: SD > biodiesel > ULSD. The GC-MS analysis shows that both, biodiesel and ULSD diesel produced significantly higher amounts of alkenes compared to SD fuel. Fuel with relatively high aromatics content such diesel can be efficiently reformed to syngas over the catalyst used in this study but the reformer operating range (e.g. O/C ratio and space velocity) is limited compared to paraffinic fuels such as FT-SD. At increased GHSV of 45 k h-1 and O/C = 1.75, the diesel fuel conversion efficiency to syngas (H2 and CO) was improved significantly and the formation of intermediate species such as methane, ethylene, and propylene was reduced considerably as a result of the increased peak reaction temperatures. The reduced HC species and increased H2 concentration in the reactor product gas from the reforming of FT-SD fuel can provide significant advantages to the IC engine applications.

Original languageEnglish
Pages (from-to)7074-7083
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume33
Issue number23
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

Keywords

  • Diesel fuels
  • Fuel reforming
  • Hydrocarbons
  • Hydrogen
  • Partial oxidation
  • Rh-monolith

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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