Removal of sulphur-containing odorants from fuel gases for fuel cell-based combined heat and power applications

P.J. Wild, de, R.G. Nyqvist, F.A. Bruijn, de, E.R. Stobbe

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Natural gas (NG) and liquefied petroleum gas (LPG) are important potential feedstocks for the production of hydrogen for fuel cell-based(e.g. proton exchange membrane fuel cells (PEMFC) or solid oxide fuel Cells (SOFC) combined heat and power (CHP) applications. To preventdetrimental effects on the (electro)catalysts in fuel cell-based combined heat and power installations (FC-CHP), sulphur removal from the feedstockis mandatory. An experimental bench-marking study of adsorbents has identified several candidates for the removal of sulphur containing odorantsat low temperature. Among these adsorbents a new material has been discovered that offers an economically attractive means to remove TetraHydroThiophene(THT), the main European odorant, from natural gas at ambient temperature. The material is environmentally benign, easy to useand possesses good activity (residual sulphur levels below 20 ppbv) and capacity for the common odorant THT in natural gas. When compared tostate-of-the-art metal-promoted active carbon the new material has a THT uptake capacity that is up to 10 times larger, depending on temperatureand pressure. Promoted versions of the new material have shown potential for the removal of THT at higher temperatures and/or for the removalof other odorants such as mercaptans from natural gas or from LPG.
Original languageEnglish
Pages (from-to)995-1004
JournalJournal of Power Sources
Issue number2
Publication statusPublished - 2006


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