The research of adsorptive separation process and model for basic nitrogen removal from fuel by solid phase coordination extraction

Removal of basic nitrogen compounds from diesel fuel by resin home made was investigated. The macro porous resin was chosen as the adsorbent. The strike curves of different conditions were menstruated. The effects of resin height in the column (or HID, i.e. ratio of resin column to its diameter), flow rate of the diesel fuel samples on adsorption, and the effects of composition, flow rate of the eluant on desorption were studied. The suitable methods were also established about extraction, elution and regeneration in the resin column. The results show that the diesel fuel recovery and its basic nitrogen (Nb) removal can be more than 91%, and the resin can be reused through solvent regeneration. The fixed bed dynamic processes can be described with the Linear Diving Force Model very well, and the correlated mass transfer coefficients were obtained. The simulation indicates that the axial back mixing is not important within the range of experimental conditions.