engleski

Analysis of Continuous Fixed Bed Adsorptive Desulfurization of Diesel Fuel

The removal of organic sulfur compounds from diesel fuel by activated carbon was investigated in a fixed bed column. The experiments were conducted to study the effects of process parameters such as flow rate, bed depth and temperature. Sulfur content of less then 0.7 mg/kg (the lowest level of detection of WD-XRF spectrometer used for analysis) was achieved for the lowest flow rate of 1 mL/min and highest bed depth of 28, 4 cm at 50 °C. In all the experiments at least one sample contained less then 10 mg/kg of sulfur with the largest achieved breakthrough volume of 660 mL. A mathematical model of the fixed bed adsorber was developed to describe the kinetics and to estimate the breakthrough curves. The model equations included the material balance for solute in liquid phase and the mass transfer rate expression. The ability of the model to fit the experimental data was satisfactory.

desulfurization; adsorption; diesel fuel; fixed bed; column

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