Abstract: The properties and operating performance of the large-scale S Zorb industrial plant with a capacity of 2.4 Mt/a was introduced. The unit adopted a new design of external filter of reactor. The plant was in good condition after it started up. The calibration test showed that when the feed with the sulfur and olefin content is 180μg/g and 22.69%, respectively, was processed, the sulfur content of the product is reduced to 4μg/g, meeting the China V gasoline standard. The RON loss is 0.4; the energy consumption is 250.8MJ/t.

Key words: large-scale, S Zorb unit, gasoline desulfurization, external filter of reactor, octane number