Abstract: A 100 kt/a straight-run gasoline aromatization unit of Nanchong Refinery was revamped and expanded its capacity to 180 kt/a by adopting the straight-run gasoline and mixed C4 feed non-hydrogenation upgrading technology developed by Research Institute of Petroleum Processing. The data of more than one year operation show that compared with the base case, the product distributions improve, gasoline yield increases significantly, dry gas yield decreases and the energy consumption of the unit is lower, which demonstrates that this technology is better than the previous one. The straight-run gasoline and mixed C4 feed non-hydrogenation upgrading technology is a preferable technology for straight-run gasoline upgrading