ABSTRACT
Deep desulfurization and dearomatization of gas oil can be obtained in a two-stage low pressure process. In die firststage deep HDS is achieved using a hydrotreating catalyst. In a second stage aromatic reduction is obtained using a hydrogenation catalyst. The use of either a hydrotreating catalyst or a sulfur resistant noble metal catalyst for the second stage aromatics reduction has been considered in this work. Catalytic tests have been performed on a deeply desulfurized light cycle oil obtained from the first stage hydrotreatment. For both types of catalysts the effects of feed sulfur content, catalyst stability and process parameters have been investigated.
