S Zorb sulfur removal technology (S ZorbTM SRT) is designed to remove sulfur from full-range naphtha, from as high as 2,000 μg/g feed sulfur to as low as < 10 μg/g product sulfur, in a one-step process with high liquid yield and high octane number retention. The S Zorb™ has become the dominant technology applied in Sinopec’s gasoline upgrading program since the following milestones: Sinopec’s 1st S Zorb unit licensed by Conoco Phillips (COP) and acquisition of the technology from COP in 2007, then the transition and innovative improvement of the technology.