Improvement of Sulfur Detection Limits in Petroleum Products Using ASTM D 4045

    Volume 31, Issue 1 (January 2003)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 7


    Tawara, K
    Senior researcher, Petroleum Energy Center, Chiba-ken,

    Kawabata, Y
    Researcher, Sankisangyo Co., Chibaken,

    Uno, Y
    Researcher, Sankisangyo Co., Chibaken,

    (Received 30 August 2001; accepted 14 August 2002)

    Abstract

    To prevent the adsorption impediment of H2S in the trace sulfur analyzer approved by ASTM D 4045, a specially prepared pure ceramic tube has been advanced to be the only usable reactor for hydrogenolysis procedure. However, a conventional ceramic tube becomes usable by inhibiting the H2S adsorption on the basic impurities by a substitute adsorption of CO2 that can be introduced continuously with H2 in the ceramic reactor. Applying the OxyHydro procedure to reduce the carbon deposit in the analysis of kerosene, a large overestimation error occurred in the determination of a single ppb of sulfur even using the specially prepared pure ceramic tube. The overestimation error was completely eliminated by the continuous introduction of CO2 with H2, even using conventional ceramic reactors. By following procedures to suppress noise from the system, the original limit of detection of 25 ppb sulfur for the analyzer was improved to 0.3 ppb.


    Paper ID: JTE12350J

    DOI: 10.1520/JTE12350J

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    Author
    Title Improvement of Sulfur Detection Limits in Petroleum Products Using ASTM D 4045
    Symposium , 0000-00-00
    Committee D02