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Some studies on a solid state sulfur probe for coal gasification systems (1977)

Jacob, K. T. ; Rao, D. B. ; Nelson, H. G.

In: CASI

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Publication Date: 2019-06-27

Description: Measurements on the solid electrolyte cell (Ar + H(2) + H(2)S/CaS + CaF(2) + (Pt)//CaF(2)//(Pt) + CaF(2) + CaS/H(2) + H(2)+Ar) show that the emf of the cell is directly related to the difference in sulfur potentials established at the Ar + H(2) + H(2)S/electrode interfaces. The electrodes convert the sulfur potential gradient across the calcium fluoride electrolyte into an equivalent fluorine potential gradient. Response time of the probe varies from approximately 9 hr at 990 K to 2.5 hr at 1225 K. The conversion of calcium sulfide and/or calcium fluoride into calcium oxide is not a problem anticipated in commercial coal gasification systems. Suggestions are presented for improving the cell for such commercial applications.

Keywords: ENERGY PRODUCTION AND CONVERSION

Type: NASA-TM-78428 , A-7162

Format: application/pdf

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