Peter Hsieh - Measuring sulfur content and corrosivity of North American petroleum with the Advanced Distillation Curve method

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      Publication Details (including relevant citation   information):

      Hsieh, Peter Y., Bruno, Thomas J., Energy Fuels,   2014, 28(3), 1868-1883.


      Petroleum is a complex fluid whose sulfur content varies   considerably depending on its place of origin. Sour crude   petroleum, which contains more than 0.5 % sulfur by mass, often   requires additional processing due to the potential for corrosion   and catalyst poisoning during refining. Estimating or measuring   the sulfur content of distillate fractions as a function of   boiling temperature is an important step in petroleum refining.   The advanced distillation curve (ADC) method was developed to   provide a composition-explicit data channel for the measurement   of thermophysical and chemical properties of complex fluids. We   applied the ADC method to a composite sample of North American   petroleum to characterize its boiling temperature, density and   composition as a function of distillate volume fraction. The   compositions of light distillate fractions were used to estimate   their densities and refractive indices based on critically   evaluated thermodynamic data. The estimated densities of the   distillate fractions are consistent with pycnometry data. The   sulfur content, measured with a sulfur chemiluminescence   detector, was found to be within the range predicted by an   empirical model based on distillate boiling temperature and   density. The corrosivity of various distillate cuts was tested   with a modified copper strip corrosion test. Copper tarnishing   was found to depend not only on the amount of sulfur present, but   also on the temperature at which the fraction is collected.

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