Adsorptie removal of sulfur and nitrogen species from a straight run gas oil oer activated carbons for its deep hydrodesulfurization

摘要

As a pre-treatment step for ultra deep hydrodesulfurization (UD-HDs),sulfur and nitrogen species were adsorptive removed from the straight run gas oil(SRGO)over activated carbon materials.An activated carobn having the lrgest surface area and highest surface polarity showed the highest total capacity for adsorption of sulfur and nitrogen species as 0.098 g sulfur and 0.039 g nitrogen per 1 g of the activated carbon,respectively,among the crbon materials examined.Revovla of both nitrogen and sulfur species was foudn very effective to achieve UD-HDS under conventional HDS conditions.SRGO treated over activated cabon contained only 11 ppm of sulfur,while non-treated SRGO contained still 193 ppm of sulfur in its HDS product.